从数组中删除非整数条目 [英] Removing non-integer entries from an array

问题描述

我有一个像这样的PHP数组:

I have a PHP array like this one:

array( [0] => 1
       [1] => 2
       [2] => 3
       [3] => Some strings
)

如何从数组中删除不是整数的条目?我需要输出:

How can I remove an entry that is not an integer number from an array? I need to output this:

array( [0] => 1
       [1] => 2
       [2] => 3
)

有人可以给我一个线索吗?

Can someone give me a clue?

推荐答案

使用 array_filter 和 is_int

$filtered = array_filter($array, 'is_int');

如评论中所述，使用以下一种方法可能是更好的解决方案.

As noted in the comments, it may be a better solution to use one of the following instead.

$filtered = array_filter($array, 'is_numeric');
$filtered = array_filter($array, 'ctype_digit');

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