   #PHP Manual Error Handling and Logging Functions error_log
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                                error_reporting

   (PHP 3, PHP 4 )
   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.

   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:

   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 (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.

   Table 1. 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
   2047  E_ALL
   2048  E_STRICT

   Warning

   With PHP > 5.0.0 E_STRICT with value 2048 is available. E_ALL does NOT
   include error levelE_STRICT.

   See also the display_errors directive and ini_set().
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