最新PHP 经常用到的数据过滤的方法

<?php
/**
 *  global.func.php 公共函数库
 */

/**
 * 返回经addslashes处理过的字符串或数组
 * @param $string 需要处理的字符串或数组
 * @return mixed
 */
function new_addslashes($string){
    if(!is_array($string)) return addslashes($string);
    foreach($string as $key => $val) $string[$key] = new_addslashes($val);
    return $string;
}

/**
 * 返回经stripslashes处理过的字符串或数组
 * @param $string 需要处理的字符串或数组
 * @return mixed
 */
function new_stripslashes($string) {
    if(!is_array($string)) return stripslashes($string);
    foreach($string as $key => $val) $string[$key] = new_stripslashes($val);
    return $string;
}

/**
 * 返回经htmlspecialchars处理过的字符串或数组
 * @param $obj 需要处理的字符串或数组
 * @return mixed
 */
function new_html_special_chars($string) {
    $encoding = "utf-8";
    if(strtolower(CHARSET)=="gbk") $encoding = "ISO-8859-15";
    if(!is_array($string)) return htmlspecialchars($string,ENT_QUOTES,$encoding);
    foreach($string as $key => $val) $string[$key] = new_html_special_chars($val);
    return $string;
}

function new_html_entity_decode($string) {
    $encoding = "utf-8";
    if(strtolower(CHARSET)=="gbk") $encoding = "ISO-8859-15";
    return html_entity_decode($string,ENT_QUOTES,$encoding);
}

function new_htmlentities($string) {
    $encoding = "utf-8";
    if(strtolower(CHARSET)=="gbk") $encoding = "ISO-8859-15";
    return htmlentities($string,ENT_QUOTES,$encoding);
}

/**
 * 安全过滤函数
 *
 * @param $string
 * @return string
 */
function safe_replace($string) {
    $string = str_replace("%20","",$string);
    $string = str_replace("%27","",$string);
    $string = str_replace("%2527","",$string);
    $string = str_replace("*","",$string);
    $string = str_replace(""","&quot;",$string);
    $string = str_replace(""","",$string);
    $string = str_replace(""","",$string);
    $string = str_replace(";","",$string);
    $string = str_replace("<","&lt;",$string);
    $string = str_replace(">","&gt;",$string);
    $string = str_replace("{","",$string);
    $string = str_replace("}","",$string);
    $string = str_replace("\","",$string);
    return $string;
}

/**
 * xss过滤函数
 *
 * @param $string
 * @return string
 */
function remove_xss($string) {
    $string = preg_replace("/[x00-x08x0Bx0Cx0E-x1Fx7F]+/S", "", $string);

    $parm1 = Array("javascript", "vbscript", "expression", "applet", "meta", "xml", "blink", "link", "script", "embed", "object", "iframe", "frame", "frameset", "ilayer", "layer", "bgsound", "title", "base");

    $parm2 = Array("onabort", "onactivate", "onafterprint", "onafterupdate", "onbeforeactivate", "onbeforecopy", "onbeforecut", "onbeforedeactivate", "onbeforeeditfocus", "onbeforepaste", "onbeforeprint", "onbeforeunload", "onbeforeupdate", "onblur", "onbounce", "oncellchange", "onchange", "onclick", "oncontextmenu", "oncontrolselect", "oncopy", "oncut", "ondataavailable", "ondatasetchanged", "ondatasetcomplete", "ondblclick", "ondeactivate", "ondrag", "ondragend", "ondragenter", "ondragleave", "ondragover", "ondragstart", "ondrop", "onerror", "onerrorupdate", "onfilterchange", "onfinish", "onfocus", "onfocusin", "onfocusout", "onhelp", "onkeydown", "onkeypress", "onkeyup", "onlayoutcomplete", "onload", "onlosecapture", "onmousedown", "onmouseenter", "onmouseleave", "onmousemove", "onmouseout", "onmouseover", "onmouseup", "onmousewheel", "onmove", "onmoveend", "onmovestart", "onpaste", "onpropertychange", "onreadystatechange", "onreset", "onresize", "onresizeend", "onresizestart", "onrowenter", "onrowexit", "onrowsdelete", "onrowsinserted", "onscroll", "onselect", "onselectionchange", "onselectstart", "onstart", "onstop", "onsubmit", "onunload");

    $parm = array_merge($parm1, $parm2);

    for ($i = 0; $i < sizeof($parm); $i++) {
        $pattern = "/";
        for ($j = 0; $j < strlen($parm[$i]); $j++) {
            if ($j > 0) {
                $pattern .= "(";
                $pattern .= "(&#[x|X]0([9][a][b]);?)?";
                $pattern .= "|(&#0([9][10][13]);?)?";
                $pattern .= ")?";
            }
            $pattern .= $parm[$i][$j];
        }
        $pattern .= "/i";
        $string = preg_replace($pattern, " ", $string);
    }
    return $string;
}

/**
 * 过滤ASCII码从0-28的控制字符
 * @return String
 */
function trim_unsafe_control_chars($str) {
    $rule = "/[" . chr ( 1 ) . "-" . chr ( 8 ) . chr ( 11 ) . "-" . chr ( 12 ) . chr ( 14 ) . "-" . chr ( 31 ) . "]*/";
    return str_replace ( chr ( 0 ), "", preg_replace ( $rule, "", $str ) );
}

/**
 * 格式化文本域内容
 *
 * @param $string 文本域内容
 * @return string
 */
function trim_textarea($string) {
    $string = nl2br ( str_replace ( " ", "&nbsp;", $string ) );
    return $string;
}

/**
 * 将文本格式成适合js输出的字符串
 * @param string $string 需要处理的字符串
 * @param intval $isjs 是否执行字符串格式化，默认为执行
 * @return string 处理后的字符串
 */
function format_js($string, $isjs = 1) {
    $string = addslashes(str_replace(array(" ", " ", " "), array("", "", ""), $string));
    return $isjs ? "document.write("".$string."");" : $string;
}

/**
 * 转义 javascript 代码标记
 *
 * @param $str
 * @return mixed
 */
 function trim_script($str) {
    if(is_array($str)){
        foreach ($str as $key => $val){
            $str[$key] = trim_script($val);
        }
     }else{
         $str = preg_replace ( "/<([/]?)script([^>]*?)>/si", "&lt;\1script\2&gt;", $str );
        $str = preg_replace ( "/<([/]?)iframe([^>]*?)>/si", "&lt;\1iframe\2&gt;", $str );
        $str = preg_replace ( "/<([/]?)frame([^>]*?)>/si", "&lt;\1frame\2&gt;", $str );
        $str = str_replace ( "javascript:", "javascript：", $str );
     }
    return $str;
}
/**
 * 获取当前页面完整URL地址
 */
function get_url() {
    $sys_protocal = isset($_SERVER["SERVER_PORT"]) && $_SERVER["SERVER_PORT"] == "443" ? "https://" : "http://";
    $php_self = $_SERVER["PHP_SELF"] ? safe_replace($_SERVER["PHP_SELF"]) : safe_replace($_SERVER["SCRIPT_NAME"]);
    $path_info = isset($_SERVER["PATH_INFO"]) ? safe_replace($_SERVER["PATH_INFO"]) : "";
    $relate_url = isset($_SERVER["REQUEST_URI"]) ? safe_replace($_SERVER["REQUEST_URI"]) : $php_self.(isset($_SERVER["QUERY_STRING"]) ? "?".safe_replace($_SERVER["QUERY_STRING"]) : $path_info);
    return $sys_protocal.(isset($_SERVER["HTTP_HOST"]) ? $_SERVER["HTTP_HOST"] : "").$relate_url;
}
/**
 * 字符截取 支持UTF8/GBK
 * @param $string
 * @param $length
 * @param $dot
 */
function str_cut($string, $length, $dot = "...") {
    $strlen = strlen($string);
    if($strlen <= $length) return $string;
    $string = str_replace(array(" ","&nbsp;", "&amp;", "&quot;", "&#039;", "&ldquo;", "&rdquo;", "&mdash;", "&lt;", "&gt;", "&middot;", "&hellip;"), array("∵"," ", "&", """, """, "“", "”", "—", "<", ">", "·", "…"), $string);
    $strcut = "";
    if(strtolower(CHARSET) == "utf-8") {
        $length = intval($length-strlen($dot)-$length/3);
        $n = $tn = $noc = 0;
        while($n < strlen($string)) {
            $t = ord($string[$n]);
            if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {
                $tn = 1; $n++; $noc++;
            } elseif(194 <= $t && $t <= 223) {
                $tn = 2; $n += 2; $noc += 2;
            } elseif(224 <= $t && $t <= 239) {
                $tn = 3; $n += 3; $noc += 2;
            } elseif(240 <= $t && $t <= 247) {
                $tn = 4; $n += 4; $noc += 2;
            } elseif(248 <= $t && $t <= 251) {
                $tn = 5; $n += 5; $noc += 2;
            } elseif($t == 252 || $t == 253) {
                $tn = 6; $n += 6; $noc += 2;
            } else {
                $n++;
            }
            if($noc >= $length) {
                break;
            }
        }
        if($noc > $length) {
            $n -= $tn;
        }
        $strcut = substr($string, 0, $n);
        $strcut = str_replace(array("∵", "&", """, """, "“", "”", "—", "<", ">", "·", "…"), array(" ", "&amp;", "&quot;", "&#039;", "&ldquo;", "&rdquo;", "&mdash;", "&lt;", "&gt;", "&middot;", "&hellip;"), $strcut);
    } else {
        $dotlen = strlen($dot);
        $maxi = $length - $dotlen - 1;
        $current_str = "";
        $search_arr = array("&"," ", """, """, "“", "”", "—", "<", ">", "·", "…","∵");
        $replace_arr = array("&amp;","&nbsp;", "&quot;", "&#039;", "&ldquo;", "&rdquo;", "&mdash;", "&lt;", "&gt;", "&middot;", "&hellip;"," ");
        $search_flip = array_flip($search_arr);
        for ($i = 0; $i < $maxi; $i++) {
            $current_str = ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
            if (in_array($current_str, $search_arr)) {
                $key = $search_flip[$current_str];
                $current_str = str_replace($search_arr[$key], $replace_arr[$key], $current_str);
            }
            $strcut .= $current_str;
        }
    }
    return $strcut.$dot;
}



/**
 * 获取请求ip
 *
 * @return ip地址
 */
function ip() {
    if(getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) {
        $ip = getenv("HTTP_CLIENT_IP");
    } elseif(getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) {
        $ip = getenv("HTTP_X_FORWARDED_FOR");
    } elseif(getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) {
        $ip = getenv("REMOTE_ADDR");
    } elseif(isset($_SERVER["REMOTE_ADDR"]) && $_SERVER["REMOTE_ADDR"] && strcasecmp($_SERVER["REMOTE_ADDR"], "unknown")) {
        $ip = $_SERVER["REMOTE_ADDR"];
    }
    return preg_match ( "/[d.]{7,15}/", $ip, $matches ) ? $matches [0] : "";
}

function get_cost_time() {
    $microtime = microtime ( TRUE );
    return $microtime - SYS_START_TIME;
}
/**
 * 程序执行时间
 *
 * @return    int    单位ms
 */
function execute_time() {
    $stime = explode ( " ", SYS_START_TIME );
    $etime = explode ( " ", microtime () );
    return number_format ( ($etime [1] + $etime [0] - $stime [1] - $stime [0]), 6 );
}


/**
* 将字符串转换为数组
*
* @param    string    $data    字符串
* @return    array    返回数组格式，如果，data为空，则返回空数组
*/
function string2array($data) {
    if($data == "") return array();
    $data = stripslashes($data);
    @eval("$array = $data;");
    return $array;
}
/**
* 将数组转换为字符串
*
* @param    array    $data        数组
* @param    bool    $isformdata    如果为0，则不使用new_stripslashes处理，可选参数，默认为1
* @return    string    返回字符串，如果，data为空，则返回空
*/
function array2string($data, $isformdata = 1) {
    if($data == "") return "";
    if($isformdata) $data = new_stripslashes($data);
    return addslashes(var_export($data, TRUE));
}

/**
* 转换字节数为其他单位
*
*
* @param    string    $filesize    字节大小
* @return    string    返回大小
*/
function sizecount($filesize) {
    if ($filesize >= 1073741824) {
        $filesize = round($filesize / 1073741824 * 100) / 100 ." GB";
    } elseif ($filesize >= 1048576) {
        $filesize = round($filesize / 1048576 * 100) / 100 ." MB";
    } elseif($filesize >= 1024) {
        $filesize = round($filesize / 1024 * 100) / 100 . " KB";
    } else {
        $filesize = $filesize." Bytes";
    }
    return $filesize;
}
/**
* 字符串加密、解密函数
*
*
* @param    string    $txt        字符串
* @param    string    $operation    ENCODE为加密，DECODE为解密，可选参数，默认为ENCODE，
* @param    string    $key        密钥：数字、字母、下划线
* @param    string    $expiry        过期时间
* @return    string
*/
function sys_auth($string, $operation = "ENCODE", $key = "", $expiry = 0) {
    $key_length = 4;
    $key = md5($key != "" ? $key : app_base::load_config("system", "auth_key"));
    $fixedkey = md5($key);
    $egiskeys = md5(substr($fixedkey, 16, 16));
    $runtokey = $key_length ? ($operation == "ENCODE" ? substr(md5(microtime(true)), -$key_length) : substr($string, 0, $key_length)) : "";
    $keys = md5(substr($runtokey, 0, 16) . substr($fixedkey, 0, 16) . substr($runtokey, 16) . substr($fixedkey, 16));
    $string = $operation == "ENCODE" ? sprintf("%010d", $expiry ? $expiry + time() : 0).substr(md5($string.$egiskeys), 0, 16) . $string : base64_decode(substr($string, $key_length));

    $i = 0; $result = "";
    $string_length = strlen($string);
    for ($i = 0; $i < $string_length; $i++){
        $result .= chr(ord($string{$i}) ^ ord($keys{$i % 32}));
    }
    if($operation == "ENCODE") {
        return $runtokey . str_replace("=", "", base64_encode($result));
    } else {
        if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$egiskeys), 0, 16)) {
            return substr($result, 26);
        } else {
            return "";
        }
    }
}
/**
* 语言文件处理
*
* @param    string        $language    标示符
* @param    array        $pars    转义的数组,二维数组 ,"key1"=>"value1","key2"=>"value2",
* @param    string        $modules 多个模块之间用半角逗号隔开，如：member,guestbook
* @return    string        语言字符
*/
function L($language = "no_language",$pars = array(), $modules = "") {
    static $LANG = array();
    static $LANG_MODULES = array();
    static $lang = "";
    if(defined("IN_ADMIN")) {
        $lang = SYS_STYLE ? SYS_STYLE : "zh-cn";
    } else {
        $lang = app_base::load_config("system","lang");
    }
    if(!$LANG) {
        require_once CODE_PATH."languages".DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR."system.lang.php";
        if(defined("IN_ADMIN")) require_once CODE_PATH."languages".DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR."system_menu.lang.php";
        if(file_exists(CODE_PATH."languages".DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.".lang.php")) require_once CODE_PATH."languages".DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.".lang.php";
    }
    if(!empty($modules)) {
        $modules = explode(",",$modules);
        foreach($modules AS $m) {
            if(!isset($LANG_MODULES[$m])) require_once CODE_PATH."languages".DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.$m.".lang.php";
        }
    }
    if(!array_key_exists($language,$LANG)) {
        return $language;
    } else {
        $language = $LANG[$language];
        if($pars) {
            foreach($pars AS $_k=>$_v) {
                $language = str_replace("{".$_k."}",$_v,$language);
            }
        }
        return $language;
    }
}

/**
 * 模板调用
 *
 * @param $module
 * @param $template
 * @param $istag
 * @return unknown_type
 */
function template($module = "content", $template = "index", $style = "") {

    if(strpos($module, "plugin/")!== false) {
        $plugin = str_replace("plugin/", "", $module);
        return p_template($plugin, $template,$style);
    }
    $module = str_replace("/", DIRECTORY_SEPARATOR, $module);
    if(!empty($style) && preg_match("/([a-z0-9-_]+)/is",$style)) {
    } elseif (empty($style) && !defined("STYLE")) {
        if(defined("SITEID")) {
            $siteid = SITEID;
        } else {
            $siteid = param::get_cookie("siteid");
        }
        if (!$siteid) $siteid = 1;
        $sitelist = getcache("sitelist","commons");
        if(!empty($siteid)) {
            $style = $sitelist[$siteid]["default_style"];
        }
    } elseif (empty($style) && defined("STYLE")) {
        $style = STYLE;
    } else {
        $style = "default";
    }
    if(!$style) $style = "default";
    $template_cache = app_base::load_sys_class("template_cache");
    $compiledtplfile = ROOT_PATH."caches".DIRECTORY_SEPARATOR."caches_template".DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".php";
    if(file_exists(CODE_PATH."templates".DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html")) {
        if(!file_exists($compiledtplfile) || (@filemtime(CODE_PATH."templates".DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html") > @filemtime($compiledtplfile))) {
            $template_cache->template_compile($module, $template, $style);
        }
    } else {
        $compiledtplfile = ROOT_PATH."caches".DIRECTORY_SEPARATOR."caches_template".DIRECTORY_SEPARATOR."default".DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".php";
        if(!file_exists($compiledtplfile) || (file_exists(CODE_PATH."templates".DIRECTORY_SEPARATOR."default".DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html") && filemtime(CODE_PATH."templates".DIRECTORY_SEPARATOR."default".DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html") > filemtime($compiledtplfile))) {
            $template_cache->template_compile($module, $template, "default");
        } elseif (!file_exists(CODE_PATH."templates".DIRECTORY_SEPARATOR."default".DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html")) {
            showmessage("Template does not exist.".DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html");
        }
    }
    return $compiledtplfile;
}

/**
 * 输出自定义错误
 *
 * @param $errno 错误号
 * @param $errstr 错误描述
 * @param $errfile 报错文件地址
 * @param $errline 错误行号
 * @return string 错误提示
 */

function my_error_handler($errno, $errstr, $errfile, $errline) {
    if($errno==8) return "";
    $errfile = str_replace(ROOT_PATH,"",$errfile);
    if(app_base::load_config("system","errorlog")) {
        error_log("<?php exit;?>".date("m-d H:i:s",SYS_TIME)." | ".$errno." | ".str_pad($errstr,30)." | ".$errfile." | ".$errline." ", 3, CACHE_PATH."error_log.php");
    } else {
        $str = "<div style="font-size:12px;text-align:left; border-bottom:1px solid #9cc9e0; border-right:1px solid #9cc9e0;padding:1px 4px;color:#000000;font-family:Arial, Helvetica,sans-serif;"><span>errorno:" . $errno . ",str:" . $errstr . ",file:<font color="blue">" . $errfile . "</font>,line" . $errline ."<br />Need Help?</span></div>";
        echo $str;
    }
}

/**
 * 提示信息页面跳转，跳转地址如果传入数组，页面会提示多个地址供用户选择，默认跳转地址为数组的第一个值，时间为5秒。
 * showmessage("登录成功", array("默认跳转地址"=>"http://www.baidu.com"));
 * @param string $msg 提示信息
 * @param mixed(string/array) $url_forward 跳转地址
 * @param int $ms 跳转等待时间
 */
function showmessage($msg, $url_forward = "goback", $ms = 1250, $dialog = "", $returnjs = "") {
    if(defined("IN_ADMIN")) {
        include(admin::admin_tpl("showmessage", "admin"));
    } else {
        include(template("content", "message"));
    }
    exit;
}
/**
 * 查询字符是否存在于某字符串
 *
 * @param $haystack 字符串
 * @param $needle 要查找的字符
 * @return bool
 */
function str_exists($haystack, $needle)
{
    return !(strpos($haystack, $needle) === FALSE);
}

/**
 * 取得文件扩展
 *
 * @param $filename 文件名
 * @return 扩展名
 */
function fileext($filename) {
    return strtolower(trim(substr(strrchr($filename, "."), 1, 10)));
}

/**
 * 加载模板标签缓存
 * @param string $name 缓存名
 * @param integer $times 缓存时间
 */
function tpl_cache($name,$times = 0) {
    $filepath = "tpl_data";
    $info = getcacheinfo($name, $filepath);
    if (SYS_TIME - $info["filemtime"] >= $times) {
        return false;
    } else {
        return getcache($name,$filepath);
    }
}

/**
 * 写入缓存，默认为文件缓存，不加载缓存配置。
 * @param $name 缓存名称
 * @param $data 缓存数据
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param $type 缓存类型[file,memcache,apc]
 * @param $config 配置名称
 * @param $timeout 过期时间
 */
function setcache($name, $data, $filepath="", $type="file", $config="", $timeout=0) {
    app_base::load_sys_class("cache_factory","",0);
    if($config) {
        $cacheconfig = app_base::load_config("cache");
        $cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
    } else {
        $cache = cache_factory::get_instance()->get_cache($type);
    }

    return $cache->set($name, $data, $timeout, "", $filepath);
}

/**
 * 读取缓存，默认为文件缓存，不加载缓存配置。
 * @param string $name 缓存名称
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param string $config 配置名称
 */
function getcache($name, $filepath="", $type="file", $config="") {
    app_base::load_sys_class("cache_factory","",0);
    if($config) {
        $cacheconfig = app_base::load_config("cache");
        $cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
    } else {
        $cache = cache_factory::get_instance()->get_cache($type);
    }
    return $cache->get($name, "", "", $filepath);
}
//根据行政区划数字获取对应名称名称  如 110101 得到 北京市东城区
function get_div($div="")
{
    if(empty($div)){
        return false;
    }
    $regioncode = getcache("1","linkage");
    if($regioncode)
    {
        $l1=substr($div,0,2)."0000";
        $L1_n=$regioncode["data"][$l1]["name"];
        $tb=array("110000","120000","310000","500000");
        if(in_array($l1,$tb)){
            $l2 = $l1=substr($div,0,2)."0000-r";
        }else{
            $l2 = substr($div,0,4)."00";
        }
        $L2_n =  $regioncode["data"][$l2]["name"];
        $L3_n =  $regioncode["data"][$div]["name"];
        if($L2_n===$L1_n){
            $res_div = $L1_n.$L3_n;
        }else{
            $res_div = $L1_n.$L2_n.$L3_n;
        }
        return $res_div;
    }else{
        return "无行政区划地址";
    }
}

//根据行业类型数字获取对应名称名称  如 $trade=‘1A0112’ 得到 农、林、牧、渔业-农业-谷物及其他作物的种植-薯类的种植
function get_trade_category($trade=""){
    if(empty($trade)){
        return false;
    }
    $trade_category = getcache("3","linkage");
    if($trade_category){
        $t1=substr($trade,0,2);
        $T_1=$trade_category["data"][$t1]["name"]?$trade_category["data"][$t1]["name"]:"";
        $t2=substr($trade,0,4);
        $T_2=$trade_category["data"][$t2]["name"]?$trade_category["data"][$t2]["name"]:"";
        $t3=substr($trade,0,5);
        $T_3=$trade_category["data"][$t3]["name"]?$trade_category["data"][$t3]["name"]:"";
        $T_4=$trade_category["data"][$trade]["name"]?$trade_category["data"][$trade]["name"]:"";
        if($T_3===$T_4){
            $res_trade = $T_1."-".$T_2."-".$T_3;
        }else{
            $res_trade = $T_1."-".$T_2."-".$T_3."-".$T_4;
        }
        if(empty($res_trade)){
            return "行业类型数据不存在";
        }
        return $res_trade;

    }else{
        return "行业类型数据不存在";
    }
}

/**
 * 删除缓存，默认为文件缓存，不加载缓存配置。
 * @param $name 缓存名称
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param $type 缓存类型[file,memcache,apc]
 * @param $config 配置名称
 */
function delcache($name, $filepath="", $type="file", $config="") {
    app_base::load_sys_class("cache_factory","",0);
    if($config) {
        $cacheconfig = app_base::load_config("cache");
        $cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
    } else {
        $cache = cache_factory::get_instance()->get_cache($type);
    }
    return $cache->delete($name, "", "", $filepath);
}

/**
 * 读取缓存，默认为文件缓存，不加载缓存配置。
 * @param string $name 缓存名称
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param string $config 配置名称
 */
function getcacheinfo($name, $filepath="", $type="file", $config="") {
    app_base::load_sys_class("cache_factory");
    if($config) {
        $cacheconfig = app_base::load_config("cache");
        $cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
    } else {
        $cache = cache_factory::get_instance()->get_cache($type);
    }
    return $cache->cacheinfo($name, "", "", $filepath);
}

/**
 * 生成sql语句，如果传入$in_cloumn 生成格式为 IN("a", "b", "c")
 * @param $data 条件数组或者字符串
 * @param $front 连接符
 * @param $in_column 字段名称
 * @return string
 */
function to_sqls($data, $front = " AND ", $in_column = false) {
    if($in_column && is_array($data)) {
        $ids = """.implode("","", $data).""";
        $sql = "$in_column IN ($ids)";
        return $sql;
    } else {
        if ($front == "") {
            $front = " AND ";
        }
        if(is_array($data) && count($data) > 0) {
            $sql = "";
            foreach ($data as $key => $val) {
                $sql .= $sql ? " $front $key = "$val" " : " $key = "$val" ";
            }
            return $sql;
        } else {
            return $data;
        }
    }
}

/**
 * 分页函数
 *
 * @param $num 信息总数
 * @param $curr_page 当前分页
 * @param $perpage 每页显示数
 * @param $urlrule URL规则
 * @param $array 需要传递的数组，用于增加额外的方法
 * @return 分页
 */
function pages($num, $curr_page, $perpage = 20, $urlrule = "", $array = array(),$setpages = 10) {
    if(defined("URLRULE") && $urlrule == "") {
        $urlrule = URLRULE;
        $array = $GLOBALS["URL_ARRAY"];
    } elseif($urlrule == "") {
        $urlrule = url_par("page={$page}");
    }
    $multipage = "";
    if($num > $perpage) {
        $page = $setpages+1;
        $offset = ceil($setpages/2-1);
        $pages = ceil($num / $perpage);
        if (defined("IN_ADMIN") && !defined("PAGES")) define("PAGES", $pages);
        $from = $curr_page - $offset;
        $to = $curr_page + $offset;
        $more = 0;
        if($page >= $pages) {
            $from = 2;
            $to = $pages-1;
        } else {
            if($from <= 1) {
                $to = $page-1;
                $from = 2;
            }  elseif($to >= $pages) {
                $from = $pages-($page-2);
                $to = $pages-1;
            }
            $more = 1;
        }
        //$multipage .= "<a class="a1">".$num.L("page_item")."</a>";
        if($curr_page>0) {
            $multipage .= " <a href="".pageurl($urlrule, $curr_page-1, $array)."" class="a1">".L("previous")."</a>";
            if($curr_page==1) {
                $multipage .= " <span>1</span>";
            } elseif($curr_page>6 && $more) {
                $multipage .= " <a href="".pageurl($urlrule, 1, $array)."">1</a>..";
            } else {
                $multipage .= " <a href="".pageurl($urlrule, 1, $array)."">1</a>";
            }
        }
        for($i = $from; $i <= $to; $i++) {
            if($i != $curr_page) {
                $multipage .= " <a href="".pageurl($urlrule, $i, $array)."">".$i."</a>";
            } else {
                $multipage .= " <span>".$i."</span>";
            }
        }
        if($curr_page<$pages) {
            if($curr_page<$pages-5 && $more) {
                $multipage .= " ..<a href="".pageurl($urlrule, $pages, $array)."">".$pages."</a> <a href="".pageurl($urlrule, $curr_page+1, $array)."" class="a1">".L("next")."</a>";
            } else {
                $multipage .= " <a href="".pageurl($urlrule, $pages, $array)."">".$pages."</a> <a href="".pageurl($urlrule, $curr_page+1, $array)."" class="a1">".L("next")."</a>";
            }
        } elseif($curr_page==$pages) {
            $multipage .= " <span>".$pages."</span> <a href="".pageurl($urlrule, $curr_page, $array)."" class="a1">".L("next")."</a>";
        } else {
            $multipage .= " <a href="".pageurl($urlrule, $pages, $array)."">".$pages."</a> <a href="".pageurl($urlrule, $curr_page+1, $array)."" class="a1">".L("next")."</a>";
        }
    }
    return $multipage;
}

function pages1($num, $curr_page, $perpage = 20, $urlrule = "", $array = array(),$setpages = 10) {
    if(defined("URLRULE") && $urlrule == "") {
        $urlrule = URLRULE;
        $array = $GLOBALS["URL_ARRAY"];
    } elseif($urlrule == "") {
        $urlrule = url_par("page={$page}");
    }
    $multipage = "";
    if($num > $perpage) {
        $page = $setpages+1;
        $offset = ceil($setpages/2-1);
        $pages = ceil($num / $perpage);
        if (defined("IN_ADMIN") && !defined("PAGES")) define("PAGES", $pages);
        $from = $curr_page - $offset;
        $to = $curr_page + $offset;
        $more = 0;
        if($page >= $pages) {
            $from = 2;
            $to = $pages-1;
        } else {
            if($from <= 1) {
                $to = $page-1;
                $from = 2;
            }  elseif($to >= $pages) {
                $from = $pages-($page-2);
                $to = $pages-1;
            }
            $more = 1;
        }
        //$multipage .= "<a class="a1">".$num.L("page_item")."</a>";
        if($curr_page>0) {
            $multipage .= " <a href="###" onclick="$("#page").val(".($curr_page-1).");$("#pageform").submit();" class="a1">".L("previous")."</a>";
            if($curr_page==1) {
                $multipage .= " <span>1</span>";
            } elseif($curr_page>6 && $more) {
                $multipage .= " <a href="###" onclick="$("#page").val(1);$("#pageform").submit();">1</a>..";
            } else {
                $multipage .= " <a href="###" onclick="$("#page").val(1);$("#pageform").submit();">1</a>";
            }
        }
        for($i = $from; $i <= $to; $i++) {
            if($i != $curr_page) {
                $multipage .= " <a href="###" onclick="$("#page").val(".$i.");$("#pageform").submit();">".$i."</a>";
            } else {
                $multipage .= " <span>".$i."</span>";
            }
        }
        if($curr_page<$pages) {
            if($curr_page<$pages-5 && $more) {
                $multipage .= " ..<a href="###" onclick="$("#page").val(".$pages.");$("#pageform").submit();">".$pages."</a> <a href="###" onclick="$("#page").val(".($curr_page+1).");$("#pageform").submit();" class="a1">".L("next")."</a>";
            } else {
                $multipage .= " <a href="###" onclick="$("#page").val(".$pages.");$("#pageform").submit();">".$pages."</a> <a href="###"  onclick="$("#page").val(".($curr_page+1).");$("#pageform").submit();" class="a1">".L("next")."</a>";
            }
        } elseif($curr_page==$pages) {
            $multipage .= " <span>".$pages."</span> <a href="###" onclick="$("#page").val(".$curr_page.");$("#pageform").submit();" class="a1">".L("next")."</a>";
        } else {
            $multipage .= " <a href="###" onclick="$("#page").val(".$pages.");$("#pageform").submit();">".$pages."</a> <a href="###" onclick="$("#page").val(".($curr_page+1).");$("#pageform").submit();" class="a1">".L("next")."</a>";
        }
    }
    return $multipage;
}


function pages2($num, $curr_page, $pages, $urlrule = "", $array = array(),$setpages = 10) {
    if(defined("URLRULE") && $urlrule == "") {
        $urlrule = URLRULE;
        $array = $GLOBALS["URL_ARRAY"];
    } elseif($urlrule == "") {
        $urlrule = url_par("page={$page}");
    }
    $multipage = "";
    if($pages > 1) {
        $page = $setpages+1;
        $offset = ceil($setpages/2-1);
        if (defined("IN_ADMIN") && !defined("PAGES")) define("PAGES", $pages);
        $from = $curr_page - $offset;
        $to = $curr_page + $offset;
        $more = 0;
        if($page >= $pages) {
            $from = 2;
            $to = $pages-1;
        } else {
            if($from <= 1) {
                $to = $page-1;
                $from = 2;
            }  elseif($to >= $pages) {
                $from = $pages-($page-2);
                $to = $pages-1;
            }
            $more = 1;
        }
        //$multipage .= "<a class="a1">".$num.L("page_item")."</a>";
        if($curr_page>0) {
            $multipage .= " <a href="###" onclick="$("#dosearch").trigger("click",[".($curr_page-1)."]);" class="a1">".L("previous")."</a>";
            if($curr_page==1) {
                $multipage .= " <span>1</span>";
            } elseif($curr_page>6 && $more) {
                $multipage .= " <a href="###" onclick="$("#dosearch").trigger("click",[1]);">1</a>..";
            } else {
                $multipage .= " <a href="###" onclick="$("#dosearch").trigger("click",[1]);">1</a>";
            }
        }
        for($i = $from; $i <= $to; $i++) {
            if($i != $curr_page) {
                $multipage .= " <a href="###" onclick="$("#dosearch").trigger("click",[".$i."]);">".$i."</a>";
            } else {
                $multipage .= " <span>".$i."</span>";
            }
        }
        if($curr_page<$pages) {
            if($curr_page<$pages-5 && $more) {
                $multipage .= " ..<a href="###" onclick="$("#dosearch").trigger("click",[".$pages."]);">".$pages."</a> <a href="###" onclick="$("#dosearch").trigger("click",[".($curr_page+1)."]);" class="a1">".L("next")."</a>";
            } else {
                $multipage .= " <a href="###" onclick="$("#dosearch").trigger("click",[".$pages."]);">".$pages."</a> <a href="###"  onclick="$("#dosearch").trigger("click",[".($curr_page+1)."]);" class="a1">".L("next")."</a>";
            }
        } elseif($curr_page==$pages) {
            $multipage .= " <span>".$pages."</span> <a href="###" onclick="$("#dosearch").trigger("click",[".($curr_page)."]);" class="a1">".L("next")."</a>";
        } else {
            $multipage .= " <a href="###" onclick="$("#dosearch").trigger("click",[".$pages."]);">".$pages."</a> <a href="###" onclick="$("#dosearch").trigger("click",[".($curr_page+1)."]);" class="a1">".L("next")."</a>";
        }
    }
    return $multipage;
}
/**
 * 返回分页路径
 *
 * @param $urlrule 分页规则
 * @param $page 当前页
 * @param $array 需要传递的数组，用于增加额外的方法
 * @return 完整的URL路径
 */
function pageurl($urlrule, $page, $array = array()) {
    if(strpos($urlrule, "~")) {
        $urlrules = explode("~", $urlrule);
        $urlrule = $page < 2 ? $urlrules[0] : $urlrules[1];
    }
    $findme = array("{$page}");
    $replaceme = array($page);
    if (is_array($array)) foreach ($array as $k=>$v) {
        $findme[] = "{$".$k."}";
        $replaceme[] = $v;
    }
    $url = str_replace($findme, $replaceme, $urlrule);
    $url = str_replace(array("http://","//","~"), array("~","/","http://"), $url);
    return $url;
}

/**
 * URL路径解析，pages 函数的辅助函数
 *
 * @param $par 传入需要解析的变量 默认为，page={$page}
 * @param $url URL地址
 * @return URL
 */
function url_par($par, $url = "") {
    if($url == "") $url = get_url();
    $pos = strpos($url, "?");
    if($pos === false) {
        $url .= "?".$par;
    } else {
        $querystring = substr(strstr($url, "?"), 1);
        parse_str($querystring, $pars);
        $query_array = array();
        foreach($pars as $k=>$v) {
            if($k != "page") $query_array[$k] = $v;
        }
        $querystring = http_build_query($query_array)."&".$par;
        $url = substr($url, 0, $pos)."?".$querystring;
    }
    return $url;
}

/**
 * 判断email格式是否正确
 * @param $email
 */
function is_email($email) {
    return strlen($email) > 6 && preg_match("/^[w-.]+@[w-.]+(.w+)+$/", $email);
}

/**
 * iconv 编辑转换
 */
if (!function_exists("iconv")) {
    function iconv($in_charset, $out_charset, $str) {
        $in_charset = strtoupper($in_charset);
        $out_charset = strtoupper($out_charset);
        if (function_exists("mb_convert_encoding")) {
            return mb_convert_encoding($str, $out_charset, $in_charset);
        } else {
            app_base::load_sys_func("iconv");
            $in_charset = strtoupper($in_charset);
            $out_charset = strtoupper($out_charset);
            if ($in_charset == "UTF-8" && ($out_charset == "GBK" || $out_charset == "GB2312")) {
                return utf8_to_gbk($str);
            }
            if (($in_charset == "GBK" || $in_charset == "GB2312") && $out_charset == "UTF-8") {
                return gbk_to_utf8($str);
            }
            return $str;
        }
    }
}

/**
 * 代码广告展示函数
 * @param intval $siteid 所属站点
 * @param intval $id 广告ID
 * @return 返回广告代码
 */
function show_ad($siteid, $id) {
    $siteid = intval($siteid);
    $id = intval($id);
    if(!$id || !$siteid) return false;
    $p = app_base::load_model("poster_model");
    $r = $p->get_one(array("spaceid"=>$id, "siteid"=>$siteid), "disabled, setting", "id ASC");
    if ($r["disabled"]) return "";
    if ($r["setting"]) {
        $c = string2array($r["setting"]);
    } else {
        $r["code"] = "";
    }
    return $c["code"];
}

/**
 * 获取当前的站点ID
 */
function get_siteid() {
    static $siteid;
    if (!empty($siteid)) return $siteid;
    if (defined("IN_ADMIN")) {
        if ($d = param::get_cookie("siteid")) {
            $siteid = $d;
        } else {
            return "";
        }
    } else {
        $data = getcache("sitelist", "commons");
        if(!is_array($data)) return "1";
        $site_url = SITE_PROTOCOL.SITE_URL;
        foreach ($data as $v) {
            if ($v["url"] == $site_url."/") $siteid = $v["siteid"];
        }
    }
    if (empty($siteid)) $siteid = 1;
    return $siteid;
}

/**
 * 获取用户昵称
 * 不传入userid取当前用户nickname,如果nickname为空取username
 * 传入field，取用户$field字段信息
 */
function get_nickname($userid="", $field="") {
    $return = "";
    if(is_numeric($userid)) {
        $member_db = app_base::load_model("member_model");
        $memberinfo = $member_db->get_one(array("userid"=>$userid));
        if(!empty($field) && $field != "nickname" && isset($memberinfo[$field]) &&!empty($memberinfo[$field])) {
            $return = $memberinfo[$field];
        } else {
            $return = isset($memberinfo["nickname"]) && !empty($memberinfo["nickname"]) ? $memberinfo["nickname"]."(".$memberinfo["username"].")" : $memberinfo["username"];
        }
    } else {
        if (param::get_cookie("_nickname")) {
            $return .= "(".param::get_cookie("_nickname").")";
        } else {
            $return .= "(".param::get_cookie("_username").")";
        }
    }
    return $return;
}

/**
 * 获取用户信息
 * 不传入$field返回用户所有信息,
 * 传入field，取用户$field字段信息
 */
function get_memberinfo($userid, $field="") {
    if(!is_numeric($userid)) {
        return false;
    } else {
        static $memberinfo;
        if (!isset($memberinfo[$userid])) {
            $member_db = app_base::load_model("member_model");
            $memberinfo[$userid] = $member_db->get_one(array("userid"=>$userid));
        }
        if(!empty($field) && !empty($memberinfo[$userid][$field])) {
            return $memberinfo[$userid][$field];
        } else {
            return $memberinfo[$userid];
        }
    }
}

/**
 * 通过 username 值，获取用户所有信息
 * 获取用户信息
 * 不传入$field返回用户所有信息,
 * 传入field，取用户$field字段信息
 */
function get_memberinfo_buyusername($username, $field="") {
    if(empty($username)){return false;}
    static $memberinfo;
    if (!isset($memberinfo[$username])) {
        $member_db = app_base::load_model("member_model");
        $memberinfo[$username] = $member_db->get_one(array("username"=>$username));
    }
    if(!empty($field) && !empty($memberinfo[$username][$field])) {
        return $memberinfo[$username][$field];
    } else {
        return $memberinfo[$username];
    }
}

/**
 * 调用关联菜单
 * @param $linkageid 联动菜单id
 * @param $id 生成联动菜单的样式id
 * @param $defaultvalue 默认值
 */
function menu_linkage($linkageid = 0, $id = "linkid", $defaultvalue = 0, $defaultlabel = array()) {
    $linkageid = intval($linkageid);
    $datas = array();
    $datas = getcache($linkageid,"linkage");
    $infos = $datas["data"];

    if($datas["style"]=="1") {
        $title = $datas["title"];
        $container = "content".create_randomnum(100, 999).date("is");
        if(!defined("DIALOG_INIT_1")) {
            define("DIALOG_INIT_1", 1);
            $string .= "<script type="text/javascript" src="".JS_PATH."dialog.js"></script>";
            //TODO $string .= "<link href="".CSS_PATH."dialog.css" rel="stylesheet" type="text/css">";
        }
        if(!defined("LINKAGE_INIT_1")) {
            define("LINKAGE_INIT_1", 1);
            $string .= "<script type="text/javascript" src="".JS_PATH."linkage/js/pop.js"></script>";
        }
        $var_div = $defaultvalue && (ROUTE_A=="edit" || ROUTE_A=="account_manage_info"  || ROUTE_A=="info_publish" || ROUTE_A=="orderinfo") ? menu_linkage_level($defaultvalue,$linkageid,$infos) : $datas["title"];
        $var_input = $defaultvalue && (ROUTE_A=="edit" || ROUTE_A=="account_manage_info"  || ROUTE_A=="info_publish") ? "<input type="hidden" name="info[".$id."]" value="".$defaultvalue."">" : "<input type="hidden" name="info[".$id."]" value="">";
        $string .= "<div name="".$id."" value="" id="".$id."" class="ib">".$var_div."</div>".$var_input." <input type="button" name="btn_".$id."" class="button" value="".L("linkage_select")."" onclick="open_linkage("".$id."","".$title."",".$container.","".$linkageid."")">";
        $string .= "<script type="text/javascript">";
        $string .= "var returnid_".$id."= "".$id."";";
        $string .= "var returnkeyid_".$id." = "".$linkageid."";";
        $string .=  "var ".$container." = new Array(";
        foreach($infos AS $k=>$v) {
            if($v["parentid"] == 0) {
                $s[]="new Array("".$v["linkageid"]."","".$v["name"]."","".$v["parentid"]."")";
            } else {
                continue;
            }
        }
        $s = implode(",",$s);
        $string .=$s;
        $string .= ")";
        $string .= "</script>";
        
    } elseif($datas["style"]=="2") {
        if(!defined("LINKAGE_INIT_1")) {
            define("LINKAGE_INIT_1", 1);
            $string .= "<script type="text/javascript" src="".JS_PATH."linkage/js/jquery.ld.js"></script>";
        }
        $default_txt = "";
        if($defaultvalue) {
                $default_txt = menu_linkage_level($defaultvalue,$linkageid,$infos);
                $default_txt = "["".str_replace(" > ","","",$default_txt).""]";
        }
        $string .= $defaultvalue && (ROUTE_A=="edit" || ROUTE_A=="account_manage_info"  || ROUTE_A=="info_publish") ? "<input type="hidden" name="info[".$id."]"  id="".$id."" value="".$defaultvalue."">" : "<input type="hidden" name="info[".$id."]"  id="".$id."" value="">";

        for($i=1;$i<=$datas["setting"]["level"];$i++) {
            $txt = isset($defaultlabel[$i]) ? $defaultlabel[$i] : "请选择";
            $string .="<select class="pc-select-".$id."" name="".$id."-".$i."" id="".$id."-".$i."" width="100"><option value="">" . $txt . "</option></select> ";
        }

        $string .= "<script type="text/javascript">
                    $(function(){
                        var $ld5 = $(".pc-select-".$id."");                      
                        $ld5.ld({ajaxOptions : {"url" : "".APP_PATH."api.php?op=get_linkage&act=ajax_select&keyid=".$linkageid.""},defaultParentId : 0,style : {"width" : 120}})     
                        var ld5_api = $ld5.ld("api");
                        //ld5_api.selected(".$default_txt.");
                        $ld5.bind("change",onchange);
                        function onchange(e){
                            var $target = $(e.target);
                            var index = $ld5.index($target);
                            $("#".$id."-".$i."").remove();
                            $("#".$id."").val($ld5.eq(index).show().val());
                            index ++;
                            $ld5.eq(index).show();                                }
                    })
        </script>";
            
    } else {
        $title = $defaultvalue ? $infos[$defaultvalue]["name"] : $datas["title"];
        $colObj = create_randomnum(100, 999).date("is");
        $string = "";
        if(!defined("LINKAGE_INIT")) {
            define("LINKAGE_INIT", 1);
            $string .= "<script type="text/javascript" src="".JS_PATH."linkage/js/mln.colselect.js"></script>";
            if(defined("IN_ADMIN")) {
                $string .= "<link href="".JS_PATH."linkage/style/admin.css" rel="stylesheet" type="text/css">";
            } else {
                $string .= "<link href="".JS_PATH."linkage/style/css.css" rel="stylesheet" type="text/css">";
            }
        }
        $string .= "<input type="hidden" name="info[".$id."]" value="1"><div id="".$id.""></div>";
        $string .= "<script type="text/javascript">";
        $string .= "var colObj".$colObj." = {"Items":[";

        foreach($infos AS $k=>$v) {
            $s .= "{"name":"".$v["name"]."","topid":"".$v["parentid"]."","colid":"".$k."","value":"".$k."","fun":function(){}},";
        }

        $string .= substr($s, 0, -1);
        $string .= "]};";
        $string .= "$("#".$id."").mlnColsel(colObj".$colObj.",{";
        $string .= "title:"".$title."",";
        $string .= "value:"".$defaultvalue."",";
        $string .= "width:100";
        $string .= "});";
        $string .= "</script>";
    }
    return $string;
}

/**
 * 联动菜单层级
 */

function menu_linkage_level($linkageid,$keyid,$infos,$result=array()) {
    if(array_key_exists($linkageid,$infos)) {
        $result[]=$infos[$linkageid]["name"];
        return menu_linkage_level($infos[$linkageid]["parentid"],$keyid,$infos,$result);
    }
    krsort($result);
    return implode(" > ",$result);
}
/**
 * 通过catid获取显示菜单完整结构
 * @param  $menuid 菜单ID
 * @param  $cache_file 菜单缓存文件名称
 * @param  $cache_path 缓存文件目录
 * @param  $key 取得缓存值的键值名称
 * @param  $parentkey 父级的ID
 * @param  $linkstring 链接字符
 */
function menu_level($menuid, $cache_file, $cache_path = "commons", $key = "catname", $parentkey = "parentid", $linkstring = " > ", $result=array()) {
    $menu_arr = getcache($cache_file, $cache_path);
    if (array_key_exists($menuid, $menu_arr)) {
        $result[] = $menu_arr[$menuid][$key];
        return menu_level($menu_arr[$menuid][$parentkey], $cache_file, $cache_path, $key, $parentkey, $linkstring, $result);
    }
    krsort($result);
    return implode($linkstring, $result);
}
/**
 * 通过id获取显示联动菜单
 * @param  $linkageid 联动菜单ID
 * @param  $keyid 菜单keyid
 * @param  $space 菜单间隔符
 * @param  $tyoe 1 返回间隔符链接，完整路径名称 3 返回完整路径数组，2返回当前联动菜单名称，4 直接返回ID
 * @param  $result 递归使用字段1
 * @param  $infos 递归使用字段2
 */
function get_linkage($linkageid, $keyid, $space = ">", $type = 1, $result = array(), $infos = array()) {
    if($space=="" || !isset($space))$space = ">";
    if(!$infos) {
        $datas = getcache($keyid,"linkage");
        $infos = $datas["data"];
    }
    if($type == 1 || $type == 3 || $type == 4) {
        if(array_key_exists($linkageid,$infos)) {
            $result[]= ($type == 1) ? $infos[$linkageid]["name"] : (($type == 4) ? $linkageid :$infos[$linkageid]);
            return get_linkage($infos[$linkageid]["parentid"], $keyid, $space, $type, $result, $infos);
        } else {
            if(count($result)>0) {
                krsort($result);
                if($type == 1 || $type == 4) $result = implode($space,$result);
                return $result;
            } else {
                return $result;
            }
        }
    } else {
        return $infos[$linkageid]["name"];
    }
}
/**
 * IE浏览器判断
 */

function is_ie() {
    $useragent = strtolower($_SERVER["HTTP_USER_AGENT"]);
    if((strpos($useragent, "opera") !== false) || (strpos($useragent, "konqueror") !== false)) return false;
    if(strpos($useragent, "msie ") !== false) return true;
    return false;
}


/**
 * 文件下载
 * @param $filepath 文件路径
 * @param $filename 文件名称
 */

function file_down($filepath, $filename = "") {
    if(!$filename) $filename = basename($filepath);
    if(is_ie()) $filename = rawurlencode($filename);
    $filetype = fileext($filename);
    $filesize = sprintf("%u", filesize($filepath));
    if(ob_get_length() !== false) @ob_end_clean();
    header("Pragma: public");
    header("Last-Modified: ".gmdate("D, d M Y H:i:s") . " GMT");
    header("Cache-Control: no-store, no-cache, must-revalidate");
    header("Cache-Control: pre-check=0, post-check=0, max-age=0");
    header("Content-Transfer-Encoding: binary");
    header("Content-Encoding: none");
    header("Content-type: ".$filetype);
    header("Content-Disposition: attachment; filename="".$filename.""");
    header("Content-length: ".$filesize);
    readfile($filepath);
    exit;
}

/**
 * 判断字符串是否为utf8编码，英文和半角字符返回ture
 * @param $string
 * @return bool
 */
function is_utf8($string) {
    return preg_match("%^(?:
                    [x09x0Ax0Dx20-x7E] # ASCII
                    | [xC2-xDF][x80-xBF] # non-overlong 2-byte
                    | xE0[xA0-xBF][x80-xBF] # excluding overlongs
                    | [xE1-xECxEExEF][x80-xBF]{2} # straight 3-byte
                    | xED[x80-x9F][x80-xBF] # excluding surrogates
                    | xF0[x90-xBF][x80-xBF]{2} # planes 1-3
                    | [xF1-xF3][x80-xBF