Algis Alekna

November 2008
M	T	W	T	F	S	S
« Sep
	1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30

PHP object clone function that works both for PHP4 and PHP5

May 29th, 2008 by

algis

Developing PHP applications that should work smooth on any PHP engine version or configuration, I need to invent some code tricks sometimes. One of the common things for me is to get a copy of an object. With PHP4 by default things are passed by value, alhough in PHP5 this behaviour has been changed and by default variables (objects) are passed by reference. It may cause unwanted modification of an object. So I wrote this small nice function to get a copy of an object (clone object) to work as expected in both PHP4 and PHP5:

function cloneObject( &$object ){
	// CHECK IF WE IN PHP5 THEN USE THE "clone" THING
	if( preg_match("/^5./", PHP_VERSION) ){
		$code = '$return = clone $object;';
		eval( $code );
		}
	else {
	// ELSE IN PHP4 JUST PASS IT BY VALUE
		$return = $object;
		}
	return $return;
	}

Nice and simple, ehh

Posted in PHP Application Development |

One Response

Cloning objects in both PHP4 and PHP5 | PHP Readings Says:
May 30th, 2008 at 7:44 am
[…] Sometimes it is need to clone objects in PHP4 but PHP4 does not have method clone. Algis Alekna on his blog posted very simple solution for this situation. Developing PHP applications that should work smooth on any PHP engine version or configuration, I need to invent some code tricks sometimes. One of the common things for me is to get a copy of an object. With PHP4 by default things are passed by value, alhough in PHP5 this behaviour has been changed and by default variables (objects) are passed by reference. […]

Independent Web Developer Notes

Links

Calendar

Categories

Archives

Recent Posts

Comments

Search:

Meta

PHP object clone function that works both for PHP4 and PHP5

One Response