在PHP中所有的报错信息可以用error_reporting()这个函数来设置：它的参数有字符串和数字两种表示方法，共14个等级，但是呢，我看使用其他数字貌似也可以，起初我以为它指的是一定的报错区间，后来，终于发现了其中的规律： 复制代码 代码如下:error_reporting( 7 ) = error_reporting( 1+2+4)= error_reporting(E_ERROR | E_WARING | E_PARSE)现在，我将其总结如下： 致命错误，脚本执行中断，就是脚本中有不可识别的东西出现 举例： Error：Invalid parameters. Invalid parameter name 部分代码出错，但不影响整体运行 举例： Warning: require_once(E:/include/config_base.php) 字符、变量或结束的地方写规范有误 举例：Parse error: syntax error, unexpected $end in 一般通知，如变量未定义等 举例：Notice: Undefined variable: p in E:/web/index.php on line 17 error_reporting 变量的默认值是 E_ALL & ~E_NOTICE 开发时，最佳的值为： E_ALL | E_STRICT如果设置为：error_reporting(E_ALL | E_STRICT)，则表示记录所有的错误信息 可能会导致网站出现一大堆的错误代码；但是对于程序员来说应该说是一件好事，可以把代码优化到最优； 一些非致命性错误虽然不影响程序的运行，但是会加重PHP的负担. 最后，晒出英文版的对照表： E_ERROR Fatal run-time errors. Errors that can not be recovered from. Execution of the script is halted E_PARSE Compile-time parse errors. Parse errors should only be generated by the parser E_NOTICE Run-time notices. The script found something that might be an error, but could also happen when running a script normally E_CORE_WARNING Non-fatal errors at PHP startup. This is like an E_WARNING in the PHP core E_COMPILE_ERROR Fatal compile-time errors. This is like an E_ERROR generated by the Zend Scripting Engine E_COMPILE_WARNING Non-fatal compile-time errors. This is like an E_WARNING generated by the Zend Scripting Engine E_USER_ERROR Fatal user-generated error. This is like an E_ERROR set by the programmer using the PHP function trigger_error() E_USER_WARNING Non-fatal user-generated warning. This is like an E_WARNING set by the programmer using the PHP function trigger_error() E_USER_NOTICE User-generated notice. This is like an E_NOTICE set by the programmer using the PHP function trigger_error() E_STRICT Run-time notices. PHP suggest changes to your code to help interoperability and compatibility of the code E_RECOVERABLE_ERROR Catchable fatal error. This is like an E_ERROR but can be caught by a user defined handle (see also set_error_handler()) E_ALL All errors and warnings, except level E_STRICT (E_STRICT will be part of E_ALL as of PHP 6.0)PHP教程
