note 88013 added to function.preg-replace-callback

To access a local variable within a callback, use currying (delayed argument binding). For example <?php function curry($func, $arity) { return create_function('', " \$args = func_get_args(); if(count(\$args) >= $arity) return call_user_func_array('$func', \$args); \$args = var_export(\$args, 1); return create_function('',' \$a = func_get_args(); \$z = ' . \$args . '; \$a = array_merge(\$z,\$a); return call_user_func_array(\'$func\', \$a); '); "); } function on_match($transformation, $matches) { return $transformation[strtolower($matches[1])]; } $transform = array('a' => 'Well,', 'd'=>'whatever', 'b'=>' '); $callback = curry(on_match, 2); echo preg_replace_callback('/([a-z])/i', $callback($transform), 'Abcd'); echo "\n"; ?> outputs: "Well, whatever" The magic lies in this curry function I found here: http://www.sitepoint.com/forums/showthread.php?threadid=336758 ---- Server IP: 83.137.20.135 Probable Submitter: 77.242.113.138 ---- Manual Page -- http://www.php.net/manual/en/function.preg-replace-callback.php Edit -- https://master.php.net/note/edit/88013 Del: integrated -- https://master.php.net/note/delete/88013/integrated Del: useless -- https://master.php.net/note/delete/88013/useless Del: bad code -- https://master.php.net/note/delete/88013/bad+code Del: spam -- https://master.php.net/note/delete/88013/spam Del: non-english -- https://master.php.net/note/delete/88013/non-english Del: in docs -- https://master.php.net/note/delete/88013/in+docs Del: other reasons-- https://master.php.net/note/delete/88013 Reject -- https://master.php.net/note/reject/88013 Search -- https://master.php.net/manage/user-notes.php