note 78512 added to control-structures.foreach

From: Date: Mon, 15 Oct 2007 21:44:33 +0000
Subject: note 78512 added to control-structures.foreach
Groups: php.notes 
Request: Send a blank email to php-notes+get-131410@lists.php.net to get a copy of this message
For that cases you want to do something inside a loop BUT omit it the frist time, I've came up with this construct. ( for example you want to build this query: "SELECT id, name, surname, email, phone FROM ..." you have the fields in an array, and you don't wanna put a comma before the first field, nor after the last one. ) <?php $first_time = true; foreach( $fields as $field ) { if( !$first_time ) // every loop BUT the first, add a comma $query .= ", "; else $first_time = false; // stop adding commas $query .= $field; [...] } ?> Notice that the check is not for ( $first_time ) but for ( !$first_time ), because this condition will be true most of the time, so *I think* it is a little faster for avoiding jumping to the else clause. ---- Server IP: 190.2.55.3 Probable Submitter: 24.232.22.244 ---- Manual Page -- http://www.php.net/manual/en/control-structures.foreach.php Edit -- https://master.php.net/note/edit/78512 Del: integrated -- https://master.php.net/note/delete/78512/integrated Del: useless -- https://master.php.net/note/delete/78512/useless Del: bad code -- https://master.php.net/note/delete/78512/bad+code Del: spam -- https://master.php.net/note/delete/78512/spam Del: non-english -- https://master.php.net/note/delete/78512/non-english Del: in docs -- https://master.php.net/note/delete/78512/in+docs Del: other reasons-- https://master.php.net/note/delete/78512 Reject -- https://master.php.net/note/reject/78512 Search -- https://master.php.net/manage/user-notes.php

« previous php.notes (#131410) next »