(PHP)正则表达式-preg_split函数的用法

<?php
/**
 * Created by PhpStorm.
 * User: Ollydebug
 * Date: 2015/11/15
 * Time: 10:13
 */


//preg_split-升级版explode函数
//preg_split的主要意思是通过一个正则表达式分割字符串

$pattern = "/[0-9]/";
$subject = "钻3石2星5尘4拳";

$arr = preg_split($pattern,$subject);

show($arr);


function show($var){
    if(empty($var)){
        echo "null";
    }elseif(is_array($var)||is_object($var)){
        // array,object
        echo "<pre>";
        print_r($var);
        echo "</pre>";
    }else{
        //string,int,float
        echo $var;
    }
}


?>