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umask
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umask

Name

umask — Changes PHP's umask.

Synopsis

int umask([mask]); int mask (optional): New mask

Returns

Current or old umask

Description

umask() controls the permissions with which new files are created. The default mask is 0777; after the call to umask() it will be mask & 0777.

If umask() is called without any arguments, the current umask is returned. If PHP is compiled as a module, when a page request has terminated the default umask is restored.

This mask can be difficult to understand for new UNIX users; some practice may be required. Try the example and notice how permissions have been modified.

Example

Example 353. Change PHP's umask

<?php
touch ("/tmp/umask-test-before");
umask (20);
touch ("/tmp/umask-test-after");
echo `ls -l /tmp/umask-test-*`;
?>

Output:
-rw-r---w-    1 nobody   nogroup         0 Jul 10 08:53 /tmp/umask-test-after
-rw-r--r--    1 nobody   nogroup         0 Jul 10 08:53 /tmp/umask-test-before

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.