note 78535 added to function.count

From: Date: Tue, 16 Oct 2007 19:24:42 +0000
Subject: note 78535 added to function.count
Groups: php.notes 
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Be careful if you're using count in a loop. Example: $arr ends at index number 25 (or $arr[25]) We know there are actually 26 elements when we include element 0 (as we should). This is what count is going to return back. But if we do this: for ($i = 0; $i < count($arr); i++) { This loop is going to try to traverse to $arr[26] which does not exist. The last element is at index number 25. We can fix this with a minor edit: for ($i = 0; $i < count($arr)-1; i++) { ---- Server IP: 64.71.164.2 Probable Submitter: 69.117.103.75 ---- Manual Page -- http://www.php.net/manual/en/function.count.php Edit -- https://master.php.net/note/edit/78535 Del: integrated -- https://master.php.net/note/delete/78535/integrated Del: useless -- https://master.php.net/note/delete/78535/useless Del: bad code -- https://master.php.net/note/delete/78535/bad+code Del: spam -- https://master.php.net/note/delete/78535/spam Del: non-english -- https://master.php.net/note/delete/78535/non-english Del: in docs -- https://master.php.net/note/delete/78535/in+docs Del: other reasons-- https://master.php.net/note/delete/78535 Reject -- https://master.php.net/note/reject/78535 Search -- https://master.php.net/manage/user-notes.php

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