但出于种种原因,有些服务器并没有开启PHP的error_log功能。
测试或其它需要时,可以打开一下,方法如下。
编辑php.ini,将log_errors设置为on:
log_errors = On
然后,重启apache即可。
如成功开启,就可以跟踪到对应的错误提示:
[Mon Sep 24 16:57:01 2012] [error] [client 218.5.80.210] PHP Warning: fsockopen() has been disabled for security reasons in /home/bccgi-bin/fsockopen.php on line 2
[Mon Sep 24 16:57:02 2012] [error] [client 218.5.80.210] PHP Warning: fsockopen() has been disabled for security reasons in /home/bccgi-bin/fsockopen.php on line 2
[Mon Sep 24 16:57:03 2012] [error] [client 218.5.80.210] PHP Warning: fsockopen() has been disabled for security reasons in /home/bccgi-bin/fsockopen.php on line 2
[Mon Sep 24 16:57:04 2012] [error] [client 218.5.80.210] PHP Warning: fsockopen() has been disabled for security reasons in /home/bccgi-bin/fsockopen.php on line
另外,注意在Windows环境下,除了将log_errors设置为on外,还需要定义error_log的路径及文件名:
error_log = d:/temp/error.log
(此目录需要授予php标识用户的修改权限,否则日志文件无法生成)
IIS没有error_log的概念,所以需要另外定义。
查看PHP错误日志可以在命令行里面输入: find . -name error.log
tailf -f error.log
写入日志,有固定的函数error_log($str, 3, filename)
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