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.
error_reporting() sets PHP's error reporting level, and returns the old level. The level parameter 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.
Some example uses:
<?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 (bitwise 63 may be used in PHP 3)
error_reporting (E_ALL);
// Same as error_reporting(E_ALL);
ini_set ('error_reporting', E_ALL);
?>The available error level constants are listed below. The actual meanings of these error levels are described in the predefined constants.
| 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 |
| 2047 | E_ALL |
See also the display_errors directive and ini_set().
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