Add new php file

php-example-file.php

+<?php
+
+// base class with member properties and methods
+class Vegetable {
+
+   var $edible;
+   var $color;
+
+   function Vegetable($edible, $color="green")
+   {
+       $this->edible = $edible;
+       $this->color = $color;
+   }
+
+   function is_edible()
+   {
+       return $this->edible;
+   }
+
+   function what_color()
+   {
+       return $this->color;
+   }
+
+} // end of class Vegetable
+
+// extends the base class
+class Spinach extends Vegetable {
+
+   var $cooked = false;
+
+   function Spinach()
+   {
+       $this->Vegetable(true, "green");
+   }
+
+   function cook_it()
+   {
+       $this->cooked = true;
+   }
+
+   function is_cooked()
+   {
+       return $this->cooked;
+   }
+
+} // end of class Spinach
+
+?>
\ No newline at end of file