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Predefined Error Constants in PHP
This table given below, list out predefined error constants of PHP, along with its description.
| Value Constant | Named Constant | Description |
|---|---|---|
| 1 | E_ERROR | Used to report only Fatal run-time errors. After reporting fatal error, the remaining execution of the script halts |
| 2 | E_WARNING | Used to report only Run-time warnings. After reporting run-time error, the remaining execution of the script continues |
| 4 | E_PARSE | Used to report only Compile-time parse errors |
| 8 | E_NOTICE | Used to report Run-time notices, not errors. |
| 16 | E_CORE_ERROR | Used to report Fatal errors at startup. It is similar to E_ERROR. It is generated through core PHP |
| 32 | E_CORE_WARNING | Used to report Non-fatal errors at startup. It is similar to E_WARNING. It is generated through core PHP |
| 64 | E_COMPILE_ERROR | Used to report Fatal compile-time errors. It is similar to E_ERROR. It is generated by Zend engine |
| 128 | E_COMPILE_WARNING | Used to report Non-fatal compile-time errors. It is similar to E_WARNING. It is also generated by Zend engine |
| 256 | E_USER_ERROR | Used to report Fatal user-generated error. It is similar to E_ERROR. It is generated through trigger_error() |
| 512 | E_USER_WARNING | Used to report Non-fatal user-generated warning. It is similar to E_WARNING. It is also generated through trigger_error() |
| 1024 | E_USER_NOTICE | Used to report User-generated notice. It is similar to E_NOTICE. It is also generated through trigger_error() |
| 2048 | E_STRICT | Used when we need to allow PHP engine to suggest some recommended changes that can be done in our PHP code, for the interoperability and forward compatibility |
| 4096 | E_RECOVERABLE_ERROR | Used to report only Catchable fatal error. Used to report some dangerous error (if any) |
| 8192 | E_DEPRECATED | Used to report Run-time notices. Used to report some notices about the code that may not work in upcoming versions of PHP |
| 16384 | E_USER_DEPRECATED | Used to report only User-generated warning messages. It is similar to E_DEPRECATED. It is generated by trigger_error() |
| 32767 | E_ALL | Used to report all errors/warnings |
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