note 48063 added to function.gmp-random

When I use the function: <?php $random = gmp_random(1); echo gmp_strval($random) . "\n"; ?> then I get this error: "Fatal error: Call to undefined function gmp_random() in C:\LocalHost\pro2\test\random.php on line 2" I don't know what there is wrong ---- Manual Page -- http://www.php.net/manual/en/function.gmp-random.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+48063 Delete -- http://master.php.net/manage/user-notes.php?action=delete+48063&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+48063&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+48063&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+48063&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+48063&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+48063&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+48063&report=yes Search -- http://master.php.net/manage/user-notes.php