PHP 去除数组中的空元素

原数组：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;
    }


去除空元素方法一：（保持键值不变）
原数组：
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 
[7] => fdsfdsfdsfds 
[8] => fdsfdsfdsfdsfdsfsd 
[9] => ssssssss 
[11] => sssssssssssssssssssss)


使用方法：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）