Description
array
array_diff ( array array1, array array2 [, array ...])
array_diff() returns an array
containing all the values of array1
that are not present in any of the other arguments.
Note that keys are preserved.
Example 1. array_diff() example $array1 = array ("a" => "green", "red", "blue", "red");
$array2 = array ("b" => "green", "yellow", "red");
$result = array_diff ($array1, $array2); |
|
This makes $result have
array ("blue");. Multiple occurrences in
$array1 are all treated the same way.
Note:
Two elements are considered equal if and only if
(string) $elem1 === (string) $elem2. In words:
when the string representation is the same.
| Warning |
This was broken in PHP 4.0.4!
|
See also array_intersect().
