php去掉数组中的空元素的方法:1、使用“function myfunction($v) {...}”方法去除空元素;2、使用“foreach ($urlArr as $key => $val) {...}”方法去掉数组中的空元素。
本文操作环境:windows7系统、PHP7.1版,DELL G3电脑
php怎么去掉数组中的空元素?
PHP数组去除空元素的方法
去除空元素方法一:(保持键值不变)
原数组:
<?php Array( [0] => sdfdsdsdsfrrrrrrr [1] => fdsfdsdsfds [2] => fdsfdsdsfdsds [3] => fdsdsfdsfds [4] => [5] => [6] => [7] => fdsfdsfdsfds [8] => fdsfdsfdsfdsfdsfsd [9] => ssssssss [10] => [11] => sssssssssssssssssssss) ?>
处理之后数组
<?php Array( [0] => sdfdsdsdsfrrrrrrr [1] => fdsfdsdsfds [2] => fdsfdsdsfdsds [3] => fdsdsfdsfds [7] => fdsfdsfdsfds [8] => fdsfdsfdsfdsfdsfsd [9] => ssssssss [11] => sssssssssssssssssssss) ?>
使用方法:
<?php function myfunction($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; }
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