获取多维php数组中的值列表[重复]

Question

This question already has an answer here:

• Is there a function to extract a 'column' from an array in PHP? 13 answers

I need to change this array:

$array = [
        [0] => [
            'id' => '100'
        ],
        [1] => [
            'id' => '200'
        ],
        [2] => [
            'id' => '300'
        ]
    ];

Into this: $array2 = [100, 200, 300];

A long time ago I found a built-in PHP function which could do this for me. But i can't for the life of me remember which one it was. Of course I could do it manually, but it would be easier and more readable if I could use a builtin PHP function

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Answer 1

Use array_column like this: array_column($array, 'id');