What does "->" do in PHP?

I am studying how to connect database while learning PHP. Just a quick question. Does anyone can tell me what does "->" sign do in PHP? I cannot understand the functionality of this sign so that I have no idea how to edit the code. Thank whoever answer this.

Answer

For real quick and dirty one-liner anonymous objects, just cast an associative array:

$obj = (object) array('foo' => 'bar', 'property' => 'value');

echo $obj->foo; // prints 'bar'
echo $obj->property; // prints 'value'


?>

... no need to create a new class or function to accomplish it.