posix_getegid

(PHP 4, PHP 5)

posix_getegid — Return the effective group ID of the current process

说明

int posix_getegid ( void )

Return the numeric effective group ID of the current process.

返回值

Returns an integer of the effective group ID.

范例

Example #1 posix_getegid() example

This example will print out the effective group id, once it is changed with posix_setegid() .

  <?php
 echo  'My real group id is ' . posix_getgid ();  //20
 posix_setegid ( 40 );
echo  'My real group id is ' . posix_getgid ();  //20
 echo  'My effective group id is ' . posix_getegid ();  //40
 ?>

注释

posix_getegid() is different than posix_getgid() because effective group ID can be changed by a calling process using posix_setegid() .

参见

posix_getgrgid() - Return info about a group by group id
posix_getgid() - Return the real group ID of the current process
posix_setgid() - Set the GID of the current process