(PHP 4, PHP 5)
error_reporting — Sets which PHP errors are reported
$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.
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.
Returns the old error_reporting
level or the current level if no level parameter is
given.
| 版本 | 说明 |
|---|---|
| 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). |
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 (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);
?>
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).
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.