[PROPOSAL]Add second to callback of preg_replace_callback

Hey: there comes a FR: https://bugs.php.net/bug.php?id=64730 the main idea is, in 5.5 we remove support of 'e' modifier. then comes a problem, the old codes(a real use case see https://github.com/php/php-src/blob/PHP-5.4/Zend/zend_vm_gen.php#L390): preg_replace(array( "/pattern1(.*)/", "/pattern2(.*)/" ), array( "/replace1/e", "/replace2/e" ) ..), can not be easier convert to the "callback" style. then I have to change it to something very ugly like(a real use case see: https://github.com/php/php-src/blob/PHP-5.5/Zend/zend_vm_gen.php#L390): function callback($subject) { if (!strncmp($subject, "pattern1", 8)) { //function for pattern 1 } else if(!strncmp($subject, "pattern2", 8)) { //function for pattern 2 } else ..... } so I propose to add a second argument to callback(aim to php-5.5.1), which is the matched regex string self. then I can simplify the previous codes to: function callback ($subject, $regex) { $replace_funcs = array( "/pattern1(.*)" => function ($subect) { //function for parttern 1; }, "/pattern2(.*)" => function($sbuect) { //function for pattern 2; } ); $replace_funcs[$regex]($subject); } what do you think(of course, the second argument can also easily change to be the regex idx in the regex array)? patch is here: https://bugs.php.net/patch-display.php?bug_id=64730&patch=sencode_argument.patch&revision=latest -- Laruence Xinchen Hui http://www.laruence.com/