Method calling using keyword

_includes/Mic.class.php

@@ -8,4 +8,10 @@ class Mic
     public $model;
     public $light;
     public $price;
+
+    // Creating methods..
+    public function setLight($light){
+        print($light);
+        print($this -> light);
+    }
 }

test.php

@@ -27,6 +27,9 @@
 
     $mic1->brand = "Toyota";
     $mic2 -> brand = "Hyundai";
+    $mic1 -> light = "RGB";
+    $mic1 -> setLight("yellow");
+    
 
     printf("mic1 = %s\n", $mic1 -> brand);
     printf("mic2 = %s", $mic2 -> brand);