I am new to OOP and am wondering if I can extend a class more than once to use the methods inside the class I want to extend, eg...

class one
{
function blah() {}
}

class two extends one
{
this->blah();
}

class three extends one
{
this->blah();
}

    Yes, you can extend a class into as many "children" as you need to. And you can extend each of those "children" as often as needed, etc.

    <?php
class Example
{
   protected $name;
   protected function hello()
   {
      return "Hello, " . $this->name;
   }
}

class Foo extends Example
{
   protected $name = "World";
   public function test()
   {
      echo $this->hello();
   }
}

class Bar extends Example
{
   protected $name = "PHPBuilder";
   public function test()
   {
      echo $this->hello();
   }
}

$a = new Foo();
$a->test();
echo "<br>";
$b = new Bar();
$b->test();
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