Looping through arrays with foreach - comp.lang.php

Message from discussion Looping through arrays with foreach

Richard Levasseur

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More options Mar 31 2006, 11:22 am

Newsgroups: comp.lang.php

From: "Richard Levasseur" <richard...@gmail.com>

Date: 31 Mar 2006 08:22:38 -0800

Local: Fri, Mar 31 2006 11:22 am

Subject: Re: Looping through arrays with foreach

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It should be said that foreach operates on a copy of the array.
Changes to $value won't will not affect the original array.

With PHP5, the referential foreach was added, which aliases $value to
the original value in the array.
foreach($array as $key => & $value) { ... }
It should also be noted that $value will still exist as a reference
after the foreach() is over, thus assignments to $value will affect the
array also, so you much unset() it to prevent undesired side effects.

More information is available in the manual at:
http://us2.php.net/manual/en/control-structures.foreach.php

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