note 77559 added to language.oop5.decon

You can pass all arguments from a derived class's constructor to the parent's constructor using func_get_args(), call_user_func_array(), and parent. For example, say you wanted to add logging to a class, but let the base do all the usual work: <?php class InstrumentedPDO extends PDO { private $log = null; public function __construct() { // connect to logging require_once('Log.php'); $this->log = Log::factory('display'); // pass through $args = func_get_args(); call_user_func_array(array (parent, '__construct'), $args); } public function query() { $args = func_get_args(); // log it if (isset($this->log)) { $this->log->log("PDO query=[{$args[0]}]"); } // pass through return call_user_func_array(array (parent, 'query'), $args); } } ?> http://bytejar.com/ - Software Lessons Learned the Hard Way ---- Server IP: 64.71.164.2 Probable Submitter: 24.148.133.105 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.decon.php Edit -- https://master.php.net/note/edit/77559 Del: integrated -- https://master.php.net/note/delete/77559/integrated Del: useless -- https://master.php.net/note/delete/77559/useless Del: bad code -- https://master.php.net/note/delete/77559/bad+code Del: spam -- https://master.php.net/note/delete/77559/spam Del: non-english -- https://master.php.net/note/delete/77559/non-english Del: in docs -- https://master.php.net/note/delete/77559/in+docs Del: other reasons-- https://master.php.net/note/delete/77559 Reject -- https://master.php.net/note/reject/77559 Search -- https://master.php.net/manage/user-notes.php