\$error\_reporting {#variable.error.reporting} ================== When this value is set to a non-null-value it\'s value is used as php\'s [`error_reporting`](&url.php-manual;error_reporting) level inside of [`display()`](#api.display) and [`fetch()`](#api.fetch). Smarty 3.1.2 introduced the [`muteExpectedErrors()`](#api.mute.expected.errors) function. Calling `Smarty::muteExpectedErrors();` after setting up custom error handling will ensure that warnings and notices (deliberately) produced by Smarty will not be passed to other custom error handlers. If your error logs are filling up with warnings regarding `filemtime()` or `unlink()` calls, please enable Smarty\'s error muting. See also [debugging](#chapter.debugging.console) and [troubleshooting](#troubleshooting).