note 99184 added to function.usort

strcmp (or strcasecmp) can be used as a callback function for usort. It will cast your comparison values to string. Thus, you can implement a __toString() method into your classes and use usort without creating a callback function: <?php class Foo { private $a; private $b; public function __construct($a, $b) { $this->a = $a; $this->b = $b; } public function __toString() { return (string)$this->a; } } $foo = array(new Foo('t', 'b'), new Foo('a', 'c'), new Foo('g', 'd')); print_r($foo); usort($foo, 'strcasecmp'); print_r($foo); ?> ---- Server IP: 213.229.106.14 Probable Submitter: 80.229.71.19 ---- Manual Page -- http://www.php.net/manual/en/function.usort.php Edit -- https://master.php.net/note/edit/99184 Del: integrated -- https://master.php.net/note/delete/99184/integrated Del: useless -- https://master.php.net/note/delete/99184/useless Del: bad code -- https://master.php.net/note/delete/99184/bad+code Del: spam -- https://master.php.net/note/delete/99184/spam Del: non-english -- https://master.php.net/note/delete/99184/non-english Del: in docs -- https://master.php.net/note/delete/99184/in+docs Del: other reasons-- https://master.php.net/note/delete/99184 Reject -- https://master.php.net/note/reject/99184 Search -- https://master.php.net/manage/user-notes.php