note 87198 deleted from function.flock by thiago

Note Submitter: Francesco ---- Last example is wrong. Regarding to * in code : if flock is not obtained but was acquired in exclusive mode, this flock will hang waiting for the lock to be released. Using LOCK_NB would enter that if block. Correct me if i'm wrong. <?php// waiting until file will be locked for writing (1000 milliseconds as timeout) if ($fp = fopen($fileName, 'a')) { $startTime = microtime(); do { $canWrite = flock($fp, LOCK_EX); // If lock not obtained sleep for 0 - 100 milliseconds, to avoid collision and CPU load * if(!$canWrite) usleep(round(rand(0, 100)*1000)); } while ((!$canWrite)and((microtime()-$startTime) < 1000)); //file was locked so now we can store information if ($canWrite) { fwrite($fp, $dataToSave); } fclose($fp); }?>