Language: C C++ D Haskell Lua OCaml PHP Perl Plain Text Python Ruby Scheme Tcl <?php // sample code for showing how type hinting is used in php class a { public function __construct(b $b) { echo $b->v; } } class b { public $v; function __construct($val) { $this->v = $val; } } $objb = new b('PHP is best'); $obj = new a($objb); ?> Private [?] Run code