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--TEST-- Test array_diff_ukey() function : error conditions --FILE-- <?php /* Prototype : array array_diff_ukey(array arr1, array arr2 [, array ...], callback key_comp_func) * Description: Returns the entries of arr1 that have keys which are not present in any of the others arguments. * Source code: ext/standard/array.c */ echo "*** Testing array_diff_ukey() : error conditions ***\n"; // Initialize $array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4); $array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8); $extra_arg = 10; function key_compare_func($key1, $key2) { if ($key1 == $key2) { return 0; } return ($key1 > $key2)? 1:-1; } //Test array_diff_ukey with one more than the expected number of arguments echo "\n-- Testing array_diff_ukey() function with more than expected no. of arguments --\n"; var_dump( array_diff_ukey($array1, $array2, 'key_compare_func', $extra_arg) ); // Testing array_diff_ukey with one less than the expected number of arguments echo "\n-- Testing array_diff_ukey() function with less than expected no. of arguments --\n"; var_dump( array_diff_ukey($array1, $array2) ); // Testing array_diff_ukey with one less than the expected number of arguments echo "\n-- Testing array_diff_ukey() function with no arguments --\n"; var_dump( array_diff_ukey() ); ?> ===DONE=== --EXPECTF-- *** Testing array_diff_ukey() : error conditions *** -- Testing array_diff_ukey() function with more than expected no. of arguments -- Warning: array_diff_ukey() expects parameter 4 to be a valid callback, no array or string given in %s on line %d NULL -- Testing array_diff_ukey() function with less than expected no. of arguments -- Warning: array_diff_ukey(): at least 3 parameters are required, 2 given in %s on line %d NULL -- Testing array_diff_ukey() function with no arguments -- Warning: array_diff_ukey(): at least 3 parameters are required, 0 given in %s on line %d NULL ===DONE===