PHP error management statements

PHP supports one error control statement: the @ sign. If it precedes any expression in the PHP code, any error messages generated by this expression will be ignored.

In case the option track_errors is set , all generated error messages will be stored in the $ php_errormsg variable. This variable will be overwritten whenever each new error occurs, so if necessary, check it immediately.

// Преднамеренная ошибка при работе с файлами
$my_file = @file ('non_existent_file') or
die ("Failed opening file: error was '$php_errormsg'");

// работает для любых выражений, а не только для функций
$value = @$cache[$key];
// В случае если ключа $key нет, сообщение об ошибке не будет отображено

?>

Attention : The @ operator works only with expressions. There is a simple rule: if an arbitrary language construct returns a value, then you can use the preceding @ operator. For example, you can use @ before a variable name, an arbitrary function or a call to include () , a constant, and so on. At the same time, you cannot use this operator before defining a function or class, conditional constructions such as if or foreach .

Attention : The @ operator does not suppress the output of errors that occur at the stage of parsing the script.

Today, the @ operator suppresses the output of messages even about critical errors interrupting the operation of the script. Among other things, this means that if you used @ to suppress errors that occur during the operation of a function, if it is not available or written incorrectly, the further work of the script will be stopped without any notification.