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PHP的error_reporting錯(cuò)誤級(jí)別變量對(duì)照表

更新時(shí)間：2014年07月08日 10:54:15 投稿：junjie

這篇文章主要介紹了PHP的error_reporting錯(cuò)誤級(jí)別變量對(duì)照表,需要的朋友可以參考下

在PHP中所有的報(bào)錯(cuò)信息可以用error_reporting()這個(gè)函數(shù)來(lái)設(shè)置：

它的參數(shù)有字符串和數(shù)字兩種表示方法，共14個(gè)等級(jí)，但是呢，我看使用其他數(shù)字貌似也可以，起初我以為它指的是一定的報(bào)錯(cuò)區(qū)間，后來(lái)，終于發(fā)現(xiàn)了其中的規(guī)律：

復(fù)制代碼代碼如下:

error_reporting( 7 ) = error_reporting( 1+2+4)= error_reporting(E_ERROR | E_WARING | E_PARSE)

現(xiàn)在，我將其總結(jié)如下：

數(shù)字	常量	說(shuō)明
1	E_ERROR	致命錯(cuò)誤，腳本執(zhí)行中斷，就是腳本中有不可識(shí)別的東西出現(xiàn) 舉例： Error：Invalid parameters. Invalid parameter name
2	E_WARNING	部分代碼出錯(cuò)，但不影響整體運(yùn)行舉例： Warning: require_once(E:/include/config_base.php)
4	E_PARSE	字符、變量或結(jié)束的地方寫(xiě)規(guī)范有誤舉例： Parse error: syntax error, unexpected $end in
8	E_NOTICE	一般通知，如變量未定義等舉例： Notice: Undefined variable: p in E:\web\index.php on line 17
16	E_CORE_ERROR	PHP進(jìn)程在啟動(dòng)時(shí)，發(fā)生了致命性錯(cuò)誤舉例：暫無(wú)
32	E_CORE_WARNING	在PHP啟動(dòng)時(shí)警告(非致命性錯(cuò)誤) 舉例：暫無(wú)
64	E_COMPILE_ERROR	編譯時(shí)致命性錯(cuò)誤舉例：暫無(wú)
128	E_COMPILE_WARNING	編譯時(shí)警告級(jí)錯(cuò)誤舉例：暫無(wú)
256	E_USER_ERROR	用戶自定義的錯(cuò)誤消息舉例：暫無(wú)
512	E_USER_WARNING	用戶自定義的警告消息舉例：暫無(wú)
1024	E_USER_NOTICE	用戶自定義的提醒消息舉例：暫無(wú)
2047	E_ALL	以上所有的報(bào)錯(cuò)信息，但不包括E_STRICT的報(bào)錯(cuò)信息舉例：暫無(wú)
2048	E_STRICT	編碼標(biāo)準(zhǔn)化警告，允許PHP建議如何修改代碼以確保最佳的互操作性向前兼容性。

error_reporting 變量的默認(rèn)值是 E_ALL & ~E_NOTICE
開(kāi)發(fā)時(shí)，最佳的值為： E_ALL | E_STRICT

如果設(shè)置為：error_reporting(E_ALL | E_STRICT)，則表示記錄所有的錯(cuò)誤信息
可能會(huì)導(dǎo)致網(wǎng)站出現(xiàn)一大堆的錯(cuò)誤代碼；但是對(duì)于程序員來(lái)說(shuō)應(yīng)該說(shuō)是一件好事，可以把代碼優(yōu)化到最優(yōu)；一些非致命性錯(cuò)誤雖然不影響程序的運(yùn)行，但是會(huì)加重PHP的負(fù)擔(dān).

最后，曬出英文版的對(duì)照表：

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)