Write files on the hard disk under a certain amount of concurrency

= $max_size) { $new_log_file = '/logs/error_' . date('YmdHis') . '.log'; rename($log_file, $new_log_file); } } $fp=fopen($log_file,'a+'); if($fp){ $startTime=microtime(); do{ // 这个循环可以保证进程在尝试1m后，如果未能锁定文件，则放弃写入日志的操作 $canWrite=flock($fp,LOCK_EX); if(!$canWrite){ usleep(round(rand(0,100)*1000)); } }while((!$canWrite)&&((microtime()-$startTime)<1000)); if($canWrite){ $content = date('Y-m-d H:i:s') . ' ' . $log_content . "\r\n"; fwrite($fp,$content); } fclose($fp); } }