PHP Function array_intersect_ukey()

Syntax

array_intersect_ukey ( $array1, $array2 [, $array3..., callback $key_compare_func] );

Definition and Usage

Returns an array containing all the values of array1 which have matching keys that are present in all the arguments.

Paramters

Parameter	Description
array1	Required. The first array is the array that the others will be compared with.
array2	Required. An array to be compared with the first array
array3	Optional. An array to be compared with the first array
key_compare_func	Required. User defined call back function.

Return Values

Returns FALSE if there is any error.

Example

Try out following example:

<?php function key_compare_func($key1, $key2) { if ($key1 == $key2) return 0; else if ($key1 > $key2) return 1; else return -1; } $array1 = array('blue'=>1, 'red'=>2, 'green'=>3, 'purple'=>4); $array2 = array('green'=>5, 'blue'=>6, 'yellow'=>7, 'cyan'=>8); $result = array_intersect_ukey($array1, $array2, "key_compare_func"); var_dump($result); ?>

This will produce following result:

array(2) { ["blue"]=> int(1) ["green"]=> int(3) }