array_diff

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.

See also array_intersect().