note 38724 added to language.types.array

From: Date: Sun, 04 Jan 2004 23:38:06 +0000
Subject: note 38724 added to language.types.array
Groups: php.notes 
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Kieran wrote: I ran across something that should be noted... Take care when using variables for referencing arrays. PHP will interpret the square bracket syntax [] as a substr() like reference.... <? // this doesn't work, PHP evaluates $($foo[$bar]) instead of ($$foo)[$bar] $temp = $$foo[$bar]; /*--------------------------------------------------------*/ // use this method instead: // make a temp array so we can refer to it by an absolute name $temp_array = $$foo; // now pull the value $temp = $temp_array[$bar]; ?> Cheers! Kieran You may also do this: <? $temp = ($$foo)[$bar]; //Or... $temp = $($foo[$bar]); ?> I forget where I read this... somewhere in documentation ---- Manual Page -- http://www.php.net/manual/en/language.types.array.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+38724 Delete -- http://master.php.net/manage/user-notes.php?action=delete+38724&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+38724&report=yes Search -- http://master.php.net/manage/user-notes.php

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