itstructure / yii2-template-multilanguage

     *

     * @throws \InvalidArgumentException

     */

    public function setExceptionHandler($handler)

    {

        if (null !== $handler && !is_callable($handler)) {

            throw new \LogicException('The exception handler must be a valid PHP callable.');

        }

        $prev = $this->exceptionHandler;

        $this->exceptionHandler = $handler;

        return $prev;

    }

    /**

     * Sets the PHP error levels that throw an exception when a PHP error occurs.

     *

     * @return callable|null The previous exception handler if any

     */

    public function setHandler($handler)

    {

        if (null !== $handler && !is_callable($handler)) {

            throw new \LogicException('The exception handler must be a valid PHP callable.');

        }

        $old = $this->handler;

        $this->handler = $handler;

        return $old;

    }

    /**

     * Sets the format for links to source files.