SimpleSAML_Error_Exception::logError PHP Method

    public function logError()
    {
        SimpleSAML\Logger::error($this->getClass() . ': ' . $this->getMessage());
        $this->logBacktrace(\SimpleSAML\Logger::ERR);
    }

function SimpleSAML_error_handler($errno, $errstr, $errfile = NULL, $errline = 0, $errcontext = NULL)
{
    if (!class_exists('SimpleSAML_Logger')) {
        /* We are probably logging a deprecation-warning during parsing.
         * Unfortunately, the autoloader is disabled at this point,
         * so we should stop here.
         *
         * See PHP bug: https://bugs.php.net/bug.php?id=47987
         */
        return FALSE;
    }
    if ($errno & SimpleSAML_Utilities::$logMask || !($errno & error_reporting())) {
        /* Masked error. */
        return FALSE;
    }
    static $limit = 5;
    $limit -= 1;
    if ($limit < 0) {
        /* We have reached the limit in the number of backtraces we will log. */
        return FALSE;
    }
    /* Show an error with a full backtrace. */
    $e = new SimpleSAML_Error_Exception('Error ' . $errno . ' - ' . $errstr);
    $e->logError();
    /* Resume normal error processing. */
    return FALSE;
}