PHP 忒聊
綴豖
ヶ輛
array_diff_assoc
(PHP 4 = 4.3.0)
Description
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().
瞰赽 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); /* 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) $elem2. In other words a strict check takes place so the string representations must be the same.
蛁: Please note that this function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using, for example, array_diff_assoc($array1[0], $array2[0]);.
See also array_diff(), array_intersect(), and array_intersect_assoc().
綴豖
れ萸
ヶ輛
array_count_values
奻珨撰
array_diff