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PhpDig is a PHP MySQL based
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posix_setegid — Sets the effective group ID for the current process.


bool posix_setegid(gid);
int gid: Group ID to request


TRUE on success and FALSE on error.


This function allows a process to attempt to change its effective group ID to that specified by gid . Unpriviledged users (for instance, the web server process on most systems) may only change the effective group ID to the real group ID and vice versa; other changes require super-user priviledges.


This is not actually a POSIX function and may not be supported on all systems. On unsupported systems, FALSE will always be returned. It should be supported on most BSD and SysV style systems, such as Linux and FreeBSD.


PHP 4.0.2


Example 1084. Setting the effective group ID for the current process

if (!posix_setegid(503)) {
    echo "Could not set new group ID.\n";
} else {
    echo "Group ID successfully changed.\n";

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 The authors of this book have elected not to choose any options under the OPL. This online book was obtained from 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.

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