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posix_setegid
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posix_setegid

Name

posix_setegid — Sets the effective group ID for the current process.

Synopsis

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

Returns

TRUE on success and FALSE on error.

Description

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.

Warning

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.

Version

PHP 4.0.2

Example

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";
}

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