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21 years ago
From the page:

Note:  Please note that this function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using array_diff($array1[0], $array2[0]);



I've found a way to bypass that. I had 2 arrays made of arrays.

I wanted to extract from the first array all the arrays not found in the second array. So I used the serialize() function:



<?php

function my_serialize(&$arr,$pos){

  $arr = serialize($arr);

}



function my_unserialize(&$arr,$pos){

  $arr = unserialize($arr);

}



 //make a copy

$first_array_s = $first_array;

$second_array_s = $second_array;



// serialize all sub-arrays

array_walk($first_array_s,'my_serialize'); 

array_walk($second_array_s,'my_serialize');



// array_diff the serialized versions

$diff = array_diff($first_array_s,$second_array_s);



// unserialize the result

array_walk($diff,'my_unserialize');



// you've got it!

print_r($diff);

?>
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