PHP: error_reporting function - 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
8192	E_DEPRECATED
16384	E_USER_DEPRECATED

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.
5.3.0	`E_DEPRECATED` and `E_USER_DEPRECATED` 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).