note 111521 added to function.require-once

Sometimes, you need to maintain the order of includes! When your file being included needs some resources (like class definition, function body, etc), the file that has those resources should be included first. However, this is not necessary if you write whole things within a single file :-) <?php # class.a.inc.php: Defines an arbitrary class named 'a' require_once('class.a.inc.php'); ## class a { ... } # class.b.inc.php: Defines an arbitrary class named 'b' # class 'b' depends on the existence of class 'a' require_once('class.b.inc.php'); ## class b extends class a { ... } ?> This does not apply strictly when you define classes/functions within the same file: <?php # This class needs class 'a' which is not yet defined class b extends a { } # You can define this class class later on, within the same file class a { } ?> In the first example, if you include class.b.inc.php earlier than class.b.inc.a, there is a havoc. ---- Server IP: 69.147.83.199 Probable Submitter: 110.34.4.242 ---- Manual Page -- http://php.net/manual/en/function.require-once.php Edit -- https://master.php.net/note/edit/111521 Del: integrated -- https://master.php.net/note/delete/111521/integrated Del: useless -- https://master.php.net/note/delete/111521/useless Del: bad code -- https://master.php.net/note/delete/111521/bad+code Del: spam -- https://master.php.net/note/delete/111521/spam Del: non-english -- https://master.php.net/note/delete/111521/non-english Del: in docs -- https://master.php.net/note/delete/111521/in+docs Del: other reasons-- https://master.php.net/note/delete/111521 Reject -- https://master.php.net/note/reject/111521 Search -- https://master.php.net/manage/user-notes.php