PHP:不区分大小写的"array_diff" [英] PHP: Case-insensitive "array_diff"

问题描述

我有以下两个数组和找到array_diff的代码:

I have following two arrays and the code to find array_diff:

$obs_ws = array("you", "your", "may", "me", "my", "etc");
$all_ws = array("LOVE", "World", "Your", "my", "etc", "CoDe");

$final_ws = array_diff($all_ws, $obs_ws);

上面的代码将输出数组设置为:

Above code giving output array as:

$final_ws = array("LOVE", "World", "Your", "CoDe");

但我希望它是

$final_ws = array("LOVE", "World", "CoDe");

请注意，您的"未删除，可能是由于"Y"位于第二个阵列的大写字母中.我也想排除您的"，因此PHP中的array_diff的任何不区分大小写的版本.

Note "Your" is not removed, it may be due to "Y" is in caps in second array. I want to exclude "Your" also, so is there any case-insensitive version of array_diff in PHP.

我尝试了 array_udiff ，但是我在我的问题中没有得到确切的用法

I tried array_udiff but I am not getting exactly how to use this in my problem

谢谢

推荐答案

尝试通过 strcasecmp 作为 array_udiff 的第三个参数功能:

Try to pass strcasecmp as third parameter to array_udiff function:

<?php
$obs_ws = array("you", "your", "may", "me", "my", "etc");
$all_ws = array("LOVE", "World", "Your", "my", "etc", "CoDe");

$final_ws = array_udiff($all_ws, $obs_ws, 'strcasecmp');

print_r($final_ws);

输出:

Array
(
    [0] => LOVE
    [1] => World
    [5] => CoDe
)

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