Generally variable $this can't be used as an array within an object context. For example, following code piece would cause a fatal error:
<?php
class TestThis {
public function __set($name, $val) {
$this[$name] = $val;
}
public function __get($name) {
return $this[$name];
}
}
$obj = new TestThis();
$obj->a = 'aaa';
echo $obj->a . "\n";
?>
But things are different when $this is used in an ArrayObject object. e.g., following code piece are valid:
<?php
class TestArrayObject extends ArrayObject {
public function __set($name, $val) {
$this[$name] = $val;
}
public function __get($name) {
return $this[$name];
}
}
$obj = new TestArrayObject();
$obj->a = 'aaa';
echo $obj->a . "\n";
?>
