note 91326 added to language.oop5.overloading

maciej at killer-robot dot net said: > Just a note in the interest of sparing people some confusion if they are coming > from or reading about other object-oriented languages: Object "overloading" > in PHP has nothing to do with overloading as it is commonly understood. > Normally, "overloading" refers to the ability to declare multiple functions with > the same name, which get called based on the number/type of parameters -- > this does not exist in PHP. In PHP, "overloading" is just a mechanism for > providing handlers for access to missing methods/variables. Actually, it is possible to accomplish method polymorphism via PHP's __call method: <?php class Example{ public function __call($name, $arguments){ switch($name){ case 'foo': switch(count($arguments)){ case 2: echo 'You called "foo" with two arguments.<br>' . PHP_EOL; break; case 3: echo 'You called "foo" with three arguments.<br>' . PHP_EOL; break; default: echo 'Error: Invalid number of arguments to "foo."<br>' . PHP_EOL; break; } break; default: echo "Error: Call to undefined function \"$name.\"<br>" . PHP_EOL; } } } $test = new Example; $test->foo('bar', 'baz'); $test->foo('bar', 'baz', 'fez', 'fap'); $test->bar(); ?> ---- Server IP: 64.71.164.2 Probable Submitter: 76.222.26.13 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.overloading.php Edit -- https://master.php.net/note/edit/91326 Del: integrated -- https://master.php.net/note/delete/91326/integrated Del: useless -- https://master.php.net/note/delete/91326/useless Del: bad code -- https://master.php.net/note/delete/91326/bad+code Del: spam -- https://master.php.net/note/delete/91326/spam Del: non-english -- https://master.php.net/note/delete/91326/non-english Del: in docs -- https://master.php.net/note/delete/91326/in+docs Del: other reasons-- https://master.php.net/note/delete/91326 Reject -- https://master.php.net/note/reject/91326 Search -- https://master.php.net/manage/user-notes.php