PHP: Sets which PHP errors are reported

Description

int error_reporting ([ int $level ] )

The error_reporting() function sets the error_reporting directive at runtime. PHP has many levels of errors, using this function sets that level for the duration (runtime) of your script.

Parameters

level

The new error_reporting level. It takes on either a bitmask, or named constants. Using named constants is strongly encouraged to ensure compatibility for future versions. As error levels are added, the range of integers increases, so older integer-based error levels will not always behave as expected.

The available error level constants are listed below. The actual meanings of these error levels are described in the predefined constants.
error_reporting() level constants and bit values

value constant

1 E_ERROR

2 E_WARNING

4 E_PARSE

8 E_NOTICE

16 E_CORE_ERROR

32 E_CORE_WARNING

64 E_COMPILE_ERROR

128 E_COMPILE_WARNING

256 E_USER_ERROR

512 E_USER_WARNING

1024 E_USER_NOTICE

6143 E_ALL

2048 E_STRICT

4096 E_RECOVERABLE_ERROR

Return Values

Returns the old error_reporting level.

ChangeLog

Version Description

5.0.0 E_STRICT introduced (not part of E_ALL).

5.2.0 E_RECOVERABLE_ERROR introduced.

6 E_STRICT became part of E_ALL.

Examples

Example #1 error_reporting() examples


<?php



// Turn off all error reporting

error_reporting(0);



// Report simple running errors

error_reporting(E_ERROR | E_WARNING | E_PARSE);



// Reporting E_NOTICE can be good too (to report uninitialized

// variables or catch variable name misspellings ...)

error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);



// Report all errors except E_NOTICE

// This is the default value set in php.ini

error_reporting(E_ALL ^ E_NOTICE);



// Report all PHP errors

error_reporting(E_ALL);



// Same as error_reporting(E_ALL);

ini_set('error_reporting', E_ALL);



?>

Notes

Warning

Most of E_STRICT errors are evaluated at the compile time thus such errors are not reported in the file where error_reporting is enhanced to include E_STRICT errors (and vice versa).