error_reporting Sets which PHP errors are reported &reftitle.description; interror_reporting intnullerror_level&null; 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 error_level is not set, error_reporting will just return the current error reporting level. &reftitle.parameters; error_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. &reftitle.returnvalues; Returns the old error_reporting level or the current level if no error_level parameter is given. &reftitle.changelog; &Version; &Description; 8.0.0 error_level is nullable now. &reftitle.examples; ]]> &reftitle.notes; 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. &reftitle.seealso; The display_errors directive The html_errors directive The xmlrpc_errors directive ini_set