php简单日志写入函数

 1 function showlog($content,$filename="filenamelog")
 2 {
 3     $logfile = 'logs/'.$filename.date('ymd').'.txt';
 4     if(!file_exists(dirname($logfile)))
 5     {
 6         mkdir(dirname($logfile));
 7     }
 8     error_log(date("[y-m-d h:i:s]")."-[".$_server["remote_addr"]."]\t[".$_server['request_uri']."]:".$content."\n", 3,$logfile);
 9 }
10 showlog("");