array_diff_ukey  4641 ext/standard/array.c PHP_FUNCTION(array_diff_ukey)
array_diff_ukey  3329 ext/standard/basic_functions.c 	PHP_FE(array_diff_ukey,													arginfo_array_diff_ukey)
array_diff_ukey    92 ext/standard/php_array.h PHP_FUNCTION(array_diff_ukey);