   #PHP Manual Array Functions array_count_values array_diff_uassoc

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                               array_diff_assoc

   (PHP 4 >= 4.3.0)
   array_diff_assoc -- Computes the difference of arrays with additional
   index check

Description

   array array_diff_assoc ( array array1, array array2 [, array ...])

   array_diff_assoc() returns an array containing all the values from
   array1 that are not present in any of the other arguments. Note that
   the keys are used in the comparison unlike array_diff().

   Example 1. array_diff_assoc() example
   <?php
   $array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
   $array2 = array("a" => "green", "yellow", "red");
   $result = array_diff_assoc($array1, $array2);
   print_r($result);
   ?>

   The result is:
Array
(
    [b] => brown
    [c] => blue
    [0] => red
)

   In our example above you see the "a" => "green" pair is present in
   both arrays and thus it is not in the ouput from the function. Unlike
   this, the pair 0 => "red" is in the ouput because in the second
   argument "red" has key which is 1.

   Two values from key => value pairs are considered equal only if
   (string) $elem1 === (string) $elem2 . In other words a strict check
   takes place so the string representations must be the same.

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

   See also array_diff(), array_intersect(), and array_intersect_assoc().
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