An array can be converted to an object in PHP.
<?php
$a=array("aa","bb");
$a=(object)$a
?>
However you can not access the member of $a because there is not a name for the member of converted object. If you convert an array of type key=>value (so called associative array) to an object, you will be able to access its members(properties) by their names which are the keys for the original array.
<?php
$a=array("aaname"=>"aa","bbname"=>"bb");
$a=(object)$a;
print($a->aaname);
?>
Note that the converted object is of class stdClass.