error_reporting

(PHP 4, PHP 5, PHP 7)

error_reporting — 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. If the optional level is not set, error_reporting() will just return the current error reporting level.

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 and the actual meanings of these error levels are described in the predefined constants.

Return Values

Returns the old error_reporting level or the current level if no level parameter is given.

Changelog

Version	Description
5.4.0	E_STRICT became part of E_ALL.
5.3.0	E_DEPRECATED and E_USER_DEPRECATED introduced.
5.2.0	E_RECOVERABLE_ERROR introduced.
5.0.0	E_STRICT introduced (not 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
error_reporting(E_ALL?&?~E_NOTICE);

//?Report?all?PHP?errors?(see?changelog)
error_reporting(E_ALL);

//?Report?all?PHP?errors
error_reporting(-1);

//?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).

Tip

Passing in the value -1 will show every possible error, even when new levels and constants are added in future PHP versions. The E_ALL constant also behaves this way as of PHP 5.4.