note 76190 added to keyword.extends

Did you know that ? Because PHP4 don't apply visibility of properties and methods, in a parent class, you can call a method of a children class ( if this method exists )!!! Same thing with properties, in a parent class, you can use a child property! See example below: <?php error_reporting( 2047 ); //parent class class my_name { function my_name( $name ) { //_name comes from child class $this -> _name = $name; } function set( $name ) { //_check comes from child class if( $this -> _check( $name ) ) { $this -> _name = $name; } } } //child class class my_infos extends my_name { var $_name; function my_infos( $name ) { $this -> my_name( $name ); } function _check( $name ) { $name = trim( $name ); return ( ! empty($name) ); } function get() { return $this -> _name; } } $infos = new my_infos( 'Me' ); //set comes from my_name class $infos -> set( 'Another' ); echo '<pre>' . $infos -> get() . '</pre>'; //no errors, show: Another ?> I don't think that it's allowed in real Oriented 0bject Programming ( in PHP5 or C++ by example ) but it works on PHP4. This may be useful, not? ---- Server IP: 195.26.5.11 Probable Submitter: 85.93.207.16 ---- Manual Page -- http://www.php.net/manual/en/keyword.extends.php Edit -- https://master.php.net/note/edit/76190 Del: integrated -- https://master.php.net/note/delete/76190/integrated Del: useless -- https://master.php.net/note/delete/76190/useless Del: bad code -- https://master.php.net/note/delete/76190/bad+code Del: spam -- https://master.php.net/note/delete/76190/spam Del: non-english -- https://master.php.net/note/delete/76190/non-english Del: in docs -- https://master.php.net/note/delete/76190/in+docs Del: other reasons-- https://master.php.net/note/delete/76190 Reject -- https://master.php.net/note/reject/76190 Search -- https://master.php.net/manage/user-notes.php