从PHP数组中通过id删除重复项的快速方法

Question

I have an array and would like to remove duplicates. I'm using php. How to remove duplicate rows (by id).
My array looks like:

 Array
    (
        [0] => Array
            (
                [id] => 415
            ) 
        [1] => Array
            (
                [id] => 425
            )
        [2] => Array
            (
                [id] => 425
            )
        [3] => Array
            (
                [id] => 426
            )
     )

Answer 1

Assuming that id is the only element of the array, you can walk through the array using serialize and array_unique, as array_unique by itself doesn't work with multidimensional arrays.

$foo = array_map('unserialize', array_unique(array_map("serialize", $foo)));

If you have other elements, @Ghost's answer is probably better