/**
* Writes the output buffer in the log file
*
* @return void
*/
private function write_log()
{
$log_output_file = $this->get_option("log_output_file");
if (!$log_output_file || !is_writable($log_output_file)) {
return;
}
$frames = Frame::$ID_COUNTER;
$memory = Helpers::DOMPDF_memory_usage() / 1024;
$time = (microtime(true) - $this->startTime) * 1000;
$out = sprintf("<span style='color: #000' title='Frames'>%6d</span>" . "<span style='color: #009' title='Memory'>%10.2f KB</span>" . "<span style='color: #900' title='Time'>%10.2f ms</span>" . "<span title='Quirksmode'> " . ($this->quirksmode ? "<span style='color: #d00'> ON</span>" : "<span style='color: #0d0'>OFF</span>") . "</span><br />", $frames, $memory, $time);
$out .= ob_get_clean();
$log_output_file = $this->get_option("log_output_file");
file_put_contents($log_output_file, $out);
}