// The double arrow operator, =>, is used as an access mechanism for arrays.
$myArray = array(
0 => 'Big',
1 => 'Small',
2 => 'Up',
3 => 'Down'
);
// The object operator, ->, is used in object scope to access methods and properties of an object.
$obj = new MyObject(); // create a new instance of MyObject into $obj
$obj->thisProperty = 'Fred'; // set a property in the $obj object called thisProperty
$obj->getProperty(); // call a method of the $obj object named getProperty