PHP Error Levels

There are sixteen different error levels (i.e. types) are available in PHP.

Error Levels in PHP

Usually, whenever the PHP engine encounters a problem that prevents a script from running properly it generate an error message. There are sixteen different error levels and each level is represented by an integer value and an associated constant. Here’s a list of error levels:

Error LevelValueDescription
E\_ERROR1A fatal run-time error, that can’t be recovered from. The execution of the script is stopped immediately.
E\_WARNING2A run-time warning. It is non-fatal and most errors tend to fall into this category. The execution of the script is not stopped.
E\_PARSE4The compile-time parse error. Parse errors should only be generated by the parser.
E\_NOTICE8A run-time notice indicating that the script encountered something that could possibly an error, although the situation could also occur when running a script normally.
E\_CORE\_ERROR16A fatal error that occur during the PHP’s engine initial startup. This is like an E\_ERROR, except it is generated by the core of PHP.
E\_CORE\_WARNING32A non-fatal error that occur during the PHP’s engine initial startup. This is like an E\_WARNING, except it is generated by the core of PHP.
E\_COMPILE\_ERROR64A fatal error that occur while the script was being compiled. This is like an E\_ERROR, except it is generated by the Zend Scripting Engine.
E\_COMPILE\_WARNING128A non-fatal error occur while the script was being compiled. This is like an E\_WARNING, except it is generated by the Zend Scripting Engine.
E\_USER\_ERROR256A fatal user-generated error message. This is like an E\_ERROR, except it is generated by the PHP code using the function trigger\_error() rather than the PHP engine.
E\_USER\_WARNING512A non-fatal user-generated warning message. This is like an E\_WARNING, except it is generated by the PHP code using the function trigger\_error() rather than the PHP engine
E\_USER\_NOTICE1024A user-generated notice message. This is like an E\_NOTICE, except it is generated by the PHP code using the function trigger\_error() rather than the PHP engine.
E\_STRICT2048Not strictly an error, but triggered whenever PHP encounters code that could lead to problems or forward incompatibilities
E\_RECOVERABLE\_ERROR4096A catchable fatal error. Although the error was fatal, it did not leave the PHP engine in an unstable state. If the error is not caught by a user defined error handler (see set\_error\_handler()), the application aborts as it was an E\_ERROR.
E\_DEPRECATED8192A run-time notice indicating that the code will not work in future versions of PHP
E\_USER\_DEPRECATED16384A user-generated warning message. This is like an E\_DEPRECATED, except it is generated by the PHP code using the function trigger\_error() rather than the PHP engine.
E\_ALL32767All errors and warnings, except of level E\_STRICT prior to PHP 5.4.0.
最后修改：2024 年 09 月 15 日
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