note 78053 added to function.spl-autoload
| From: | safak_ozpinar at NOSPAM dot yahoo dot com | Date: | Wed, 26 Sep 2007 02:17:25 +0000 |
| Subject: | note 78053 added to function.spl-autoload | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-130791@lists.php.net to get a copy of this message | ||
Note that, the orders of file extensions is important for performance. You should make the priority
of your favourite file extension higest or use only one extension for your class files. Check out
this example:
Some class files:
ClassA.php
<?php class ClassA { var $val = 'Hello from class "ClassA"'; } ?>
ClassB.php
<?php class ClassB { var $val = 'Hello from class "ClassB"'; } ?>
ClassC.php
<?php class ClassC { var $val = 'Hello from class "ClassC"'; } ?>
ClassD.php
<?php class ClassD { var $val = 'Hello from class "ClassD"'; } ?>
ClassE.php
<?php class ClassE { var $val = 'Hello from class "ClassE"'; } ?>
1. Simple:
<?php
// default priority: .inc .php
for($n=65; $n<70; $n++) {
$className = 'Class'.chr($n);
spl_autoload($className);
$ins = new $className;
echo $ins->val.'<br>';
}
// 4.2 miliseconds
?>
2. Change priority:
<?php
spl_autoload_extensions('.php,.inc');
// new priority: .php .inc
for($n=65; $n<70; $n++) {
$className = 'Class'.chr($n);
spl_autoload($className);
$ins = new $className;
echo $ins->val.'<br>';
}
// 1.4 miliseconds
?>
Or you can use this simple function that runs a bit faster for the extensions with lower priority :)
<?php
function my_autoload($className, $extList='.inc,.php') {
$ext = explode(',',$extList);
foreach($ext as $x) {
$fname = $className.$x;
if(@file_exists($fname)) {
require_once($fname);
return true;
}
}
return false;
}
for($n=65; $n<70; $n++) {
$className = 'Class'.chr($n);
my_autoload($className);
$ins = new $className;
echo $ins->val.'<br>';
}
// 2.6 miliseconds
?>
---
Safak Ozpinar - Istanbul University, Computer Engineering
----
Server IP: 69.147.83.197
Probable Submitter: 81.215.143.171
----
Manual Page -- http://www.php.net/manual/en/function.spl-autoload.php
Edit -- https://master.php.net/note/edit/78053
Del: integrated -- https://master.php.net/note/delete/78053/integrated
Del: useless -- https://master.php.net/note/delete/78053/useless
Del: bad code -- https://master.php.net/note/delete/78053/bad+code
Del: spam -- https://master.php.net/note/delete/78053/spam
Del: non-english -- https://master.php.net/note/delete/78053/non-english
Del: in docs -- https://master.php.net/note/delete/78053/in+docs
Del: other reasons-- https://master.php.net/note/delete/78053
Reject -- https://master.php.net/note/reject/78053
Search -- https://master.php.net/manage/user-notes.php