<?php
function write_log($log_content)
{
$log_file = '/logs/error.log';
if(is_file($log_file)) {
// 检测log文件大小,将每个log文件控制在2m以内
$log_filesize = filesize($log_file);
$max_size = 2 * 1024 * 1024; // 可以接受的最大的文件大小
if($log_filesize >= $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);
}
}
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