array_intersect

(PHP 4 )

array_intersect -- Computes the intersection of arrays

Description

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

array_intersect() returns an array containing all the values of array1 that are present in all the arguments. Note that keys are preserved.

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_diff().