# PHP error_reporting() 函數 ## 定義和用法 error_reporting() 設置 PHP 的報錯級別并返回當前級別。 ### 語法 ``` error_reporting(report_level) ``` 如果參數 level 未指定，當前報錯級別將被返回。下面幾項是 level 可能的值： | 值 | 常量 | 描述 | | --- | --- | --- | | 1 | E_ERROR | Fatal run-time errors. Errors that can not be recovered from. Execution of the script is halted | | 2 | E_WARNING | Non-fatal run-time errors. Execution of the script is not halted | | 4 | E_PARSE | Compile-time parse errors. Parse errors should only be generated by the parser | | 8 | E_NOTICE | Run-time notices. The script found something that might be an error, but could also happen when running a script normally | | 16 | E_CORE_ERROR | Fatal errors at PHP startup. This is like an E_ERROR in the PHP core | | 32 | E_CORE_WARNING | Non-fatal errors at PHP startup. This is like an E_WARNING in the PHP core | | 64 | E_COMPILE_ERROR | Fatal compile-time errors. This is like an E_ERROR generated by the Zend Scripting Engine | | 128 | E_COMPILE_WARNING | Non-fatal compile-time errors. This is like an E_WARNING generated by the Zend Scripting Engine | | 256 | E_USER_ERROR | Fatal user-generated error. This is like an E_ERROR set by the programmer using the PHP function trigger_error() | | 512 | E_USER_WARNING | Non-fatal user-generated warning. This is like an E_WARNING set by the programmer using the PHP function trigger_error() | | 1024 | E_USER_NOTICE | User-generated notice. This is like an E_NOTICE set by the programmer using the PHP function trigger_error() | | 2048 | E_STRICT | Run-time notices. PHP suggest changes to your code to help interoperability and compatibility of the code | | 4096 | 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()) | | 8191 | E_ALL | All errors and warnings, except level E_STRICT (E_STRICT will be part of E_ALL as of PHP 6.0) | ## 例子 任意數目的以上選項都可以用“或”來連接（用 OR 或 |），這樣可以報告所有需要的各級別錯誤。例如，下面的代碼關閉了用戶自定義的錯誤和警告，執行了某些操作，然后恢復到原始的報錯級別： ``` <?php //禁用錯誤報告 error_reporting(0); //報告運行時錯誤 error_reporting(E_ERROR | E_WARNING | E_PARSE); //報告所有錯誤 error_reporting(E_ALL); ?> ```