1--TEST--
2Test array_intersect_ukey() function : usage variation - Passing non-existing function name to callback
3--FILE--
4<?php
5echo "*** Testing array_intersect_ukey() : usage variation ***\n";
6
7//Initialise arguments
8$array1 = array('blue'  => 1, 'red'  => 2, 'green'  => 3, 'purple' => 4);
9$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan'   => 8);
10
11//function name within double quotes
12try {
13    var_dump( array_intersect_ukey($array1, $array2, "unknown_function") );
14} catch (TypeError $e) {
15    echo $e->getMessage(), "\n";
16}
17
18//function name within single quotes
19try {
20    var_dump( array_intersect_ukey($array1, $array2, 'unknown_function') );
21} catch (TypeError $e) {
22    echo $e->getMessage(), "\n";
23}
24
25?>
26--EXPECT--
27*** Testing array_intersect_ukey() : usage variation ***
28array_intersect_ukey(): Argument #3 must be a valid callback, function "unknown_function" not found or invalid function name
29array_intersect_ukey(): Argument #3 must be a valid callback, function "unknown_function" not found or invalid function name
30