note 77392 added to language.oop5

(Repeating the post made under classes for PHP 4 section.) class casting (type casting to an extended class) workaround. Useful to use functionality in an extended class on an instance of a base class (especially when the BaseClass file needs to be small and the extended class functions are huge). Tested to work on public, protected and private vars in PHP5. --- class ABaseClass { private $T1; protected $T2; public $T3; public function CopyFrom( ) { // If this class had parents then you will want to implement and use parent::$CopyFrom( ). If not, then private members in the parent class will not be copied. return get_object_vars( $this ); } protected function CopyInto( $VarArr ) { // If this class had parents then in order to copy the private values we must implement and use parent::CopyInto( $VarArr ). $TempArr = get_class_vars( __CLASS__ ); foreach( $TempArr as $VarName => $Var1 ) { $this->$VarName = $VarArr[ $VarName ]; } } } class AnExtendedClass extends ABaseClass { public function __construct( $theBaseClassInstance ) { $this->CopyInto( $theBaseClassInstance->CopyFrom( ) ); } public function LongFunctionIntheFileWithTheExtendedClass( ) { // Bla Bla Bla } } --- $BaseInstance = new ABaseClass(); ... $ExtendedInstance = new AnExtendedClass( $BaseInstance ); $ExtendedInstance->LongFunctionIntheFileWithTheExtendedClass( ); ---- Server IP: 69.147.83.197 Probable Submitter: 76.208.154.218 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.php Edit -- https://master.php.net/note/edit/77392 Del: integrated -- https://master.php.net/note/delete/77392/integrated Del: useless -- https://master.php.net/note/delete/77392/useless Del: bad code -- https://master.php.net/note/delete/77392/bad+code Del: spam -- https://master.php.net/note/delete/77392/spam Del: non-english -- https://master.php.net/note/delete/77392/non-english Del: in docs -- https://master.php.net/note/delete/77392/in+docs Del: other reasons-- https://master.php.net/note/delete/77392 Reject -- https://master.php.net/note/reject/77392 Search -- https://master.php.net/manage/user-notes.php