Last PHP version with Passing by Reference - http://php.net/manual/en/language.references.pass.php
Last PHP version with Passing by Reference - http://php.net/manual/en/language.references.pass.php
Last PHP version with Passing by Reference - http://php.net/manual/en/language.references.pass.php
Last PHP version with Passing by Reference - http://php.net/manual/en/language.references.pass.php