PHP 去除数组中的空元素

最新推荐文章于 2021-03-26 10:55:49 发布

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本文介绍两种去除PHP数组中空元素的方法。一种保持原有键值不变，另一种则使键值自增。通过具体示例展示了如何利用foreach循环和array_filter函数实现这些功能。

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）

转自：https://blog.youkuaiyun.com/heyubingfeng/article/details/37723315