Исключения
PHP Manual

The RuntimeException class

Введение

Exception thrown if an error which can only be found on runtime occurs.

Обзор классов

RuntimeException extends Exception {
/* Наследуемые методы */
final public string Exception::getMessage ( void )
final public mixed Exception::getCode ( void )
final public string Exception::getFile ( void )
final public int Exception::getLine ( void )
final public array Exception::getTrace ( void )
final public string Exception::getTraceAsString ( void )
public string Exception::__toString ( void )
final private void Exception::__clone ( void )
}

Исключения
PHP Manual