PHP 4.0 Bug #7046: shm_put_var wont put the given var into memory

From: FaVo@FaVo.li Operating system: Linux version 2.2.13 (SuSE) PHP version: 4.0.2 PHP Bug Type: Semaphore related Bug description: shm_put_var wont put the given var into memory I was working with shared memory segments on PHP 4.0.2, it works fine. But sometimes (ca. 5% of the calls) it wont put my array into the memory, after a second try sometimes third try with a timeout of 1ms it worked. Example Code: while (!$check_mem) { shm_remove($shm_id); $uid = shm_attach($shm_id, $global[ARRAY_SIZE]); $tstamp = time(); $user_data = array ( "nick" => $cur_identity->username, "channel" => $channel, "input" => "", "query" => "", "query_stat" => "", "cybernode" => $cur_identity->cybernode_key, "timestamp" => $tstamp, "color" => 2, "channel_info" => 1, "voice" => 1, "level" => $user_level ); $check_mem = shm_put_var($uid, $shm_id, $user_data); if (!$check_mem) echo "*"; usleep(1); } I needed the while-loop and usleep to check if it was successfull. When i removed the usleep i had about 80 stars (*) sometimes, but worked after that many tries. With the usleep it just needs 2 sometimes 3 tries. But its only at about 5% of the calls (tried this one with about 700 script calls after i saw it).