note 39411 added to function.strtoupper
| From: | Ansis at rn2 dot php dot net | Date: | Tue, 27 Jan 2004 20:40:28 +0000 |
| Subject: | note 39411 added to function.strtoupper | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-64281@lists.php.net to get a copy of this message | ||
In the case transformations it is better to use "preg_replace", not "strtr":
1) it is faster;
2) it is possible to write a transformation formula for all Windows codepages, instead of each
letter writing as most of you did.
Thus, for "to upper case" transformation:
<?php
$result =
preg_replace("/([a-z\xE0-\xFF])/e","chr(ord('\\1')-32)",$arg);
?>
For "to lower case" transformation:
<?php
$result =
preg_replace("/([A-Z\xC0-\xDF])/e","chr(ord('\\1')+32)",$arg);
?>
----
Manual Page -- http://www.php.net/manual/en/function.strtoupper.php
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