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--TEST--
Test array_intersect_ukey() function : usage variation - Passing non-existing function name to callback
--FILE--
<?php
/* Prototype : array array_intersect_ukey(array arr1, array arr2 [, array ...], callback key_compare_func)
* Description: Computes the intersection of arrays using a callback function on the keys for comparison.
* Source code: ext/standard/array.c
*/
echo "*** Testing array_intersect_ukey() : usage variation ***\n";
//Initialise arguments
$array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
//function name within double quotes
var_dump( array_intersect_ukey($array1, $array2, "unknown_function") );
//function name within single quotes
var_dump( array_intersect_ukey($array1, $array2, 'unknown_function') );
//function name without quotes
var_dump( array_intersect_ukey($array1, $array2, unknown_function) );
?>
===DONE===
--EXPECTF--
*** Testing array_intersect_ukey() : usage variation ***
Warning: array_intersect_ukey() expects parameter 3 to be a valid callback, function 'unknown_function' not found or invalid function name in %s on line %d
NULL
Warning: array_intersect_ukey() expects parameter 3 to be a valid callback, function 'unknown_function' not found or invalid function name in %s on line %d
NULL
Notice: Use of undefined constant unknown_function - assumed 'unknown_function' in %s on line %d
Warning: array_intersect_ukey() expects parameter 3 to be a valid callback, function 'unknown_function' not found or invalid function name in %s on line %d
NULL
===DONE===
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