标签：
1. error logging
messages saved to php_error.log
http://php.net/manual/en/function.error-log.php
http://stackoverflow.com/questions/3531703/how-to-log-errors-and-warnings-into-a-file
error_log( "Hello, errors!" );
标签：
原文地址：http://www.cnblogs.com/phoenix13suns/p/4535978.html
