Blade::directive() does not seem to work. about stringbladecompiler HOT 3 CLOSED

Blade::directive('block', function($expression) {
            return "<?php echo "Hello world"; ?>";
        });

StringBlade::directive('block', function($expression) {
            return "<?php echo "Hello world"; ?>";
        });

StringBlade::directive('block', function($expression) {
                return Someclass::handler($expression);
});
Blade::directive('block', function($expression) {
            return Someclass::handler($expression);
});

// some class
class someclass () { 
   public function handler ($expression) {
      // do something then return the php string
      return "<?php echo "Hello world"; ?>";
   }
}