= $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);
}
}