PHP数组去除空元素的方法

> 去除空元素方法一：（保持键值不变）

原数组：

<?php
Array(
 [0] => sdfdsdsdsfrrrrrrr
 [1] => fdsfdsdsfds
 [2] => fdsfdsdsfdsds 
 [3] => fdsdsfdsfds 
 [4] => 
 [5] =>
 [6] =>
 [7] => fdsfdsfdsfds
 [8] => fdsfdsfdsfdsfdsfsd 
 [9] => ssssssss
 [10] => 
 [11] => sssssssssssssssssssss)
 ?>

处理之后数组
<?php
Array( 
[0] => sdfdsdsdsfrrrrrrr 
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds 
[3] => fdsdsfdsfds 
[7] => fdsfdsfdsfds 
[8] => fdsfdsfdsfdsfdsfsd 
[9] => ssssssss 
[11] => sssssssssssssssssssss)
?>

使用方法：
<?php
function myfunction($v) {
    if ($v != "") {
        return true;
    }
    return false;
}
print_r(array_filter($urlArr, "myfunction"));
?>

去除空元素方法二：（键值自增）

原数组：
<?php
Array
(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] =>
[5] =>
[6] =>
[7] => fdsfdsfdsfds
[8] => fdsfdsfdsfdsfdsfsd
[9] => ssssssss
[10] =>
[11] => sssssssssssssssssssss
)

处理之后数组：

Array
(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] => fdsfdsfdsfds
[5] => fdsfdsfdsfdsfdsfsd
[6] => ssssssss
[7] => sssssssssssssssssssss
)

使用方法：$arr = array();
    foreach ($urlArr as $key => $val) {
        if (empty($val)) {
            continue;
        }
        $arr[] = $val;
    }