Generating pdf from XML response taking so much time - php

Question

I have xml in my database and wanted to generate pdf from xml, but if xml is too big then it through timeout error. I don't want to change my server timeout instead of how to improve the timing of pdf generate.
I am using <pre> tag for good formatting.
Below code for pdf generate
public function generateCreditReport($form, $path=false, $htmlPath=false){
$this->load->library('fpdf/fpdf');
$this->load->library('fpdi/fpdi');
if(!empty($path) && !file_exists($path)){
$data['form'] = $form;
$data['date'] = $data['xml'] = null;
if($data['form']->credit_report != ''){
try{
$data['xml'] = new SimpleXMLElement($data['form']->credit_report);
}catch(Exception $e){
}
$timeStatus = $this->admin->get_timestamp($data['form']->id, 'credit_pulled');
if(!empty($timeStatus)) {
$data['date'] = $timeStatus->date;
}
}
$pdf = new TCPDF();
$pdf->SetFont('Helvetica');
$pdf->SetFontSize(10);
$pdf->SetTextColor(0, 0, 0);
$pdf->SetProtection(array('print','modify'),"$form->loan_id","sefinance",0);
$pdf->AddPage();
$html = $this->load->view('admin/credit_report_pdf', $data,true);
$generatedReport = file_put_contents($htmlPath, $html , FILE_APPEND | LOCK_EX);
$pdf->WriteHTML($html);
if($path){
$pdf->Output($path, "F");
}else{
$pdf->Output();
}
}
}
View file credit_report_pdf is as below
<h4>Report Results</h4>
<br>
<?php if(!empty($xml)){ ?>
<?php echo print_credit($xml->EfxReport->USPrintImage); ?>
<?php } ?>
I am formatting using <pre> to look good.
function print_credit($report) {
$split = " <div style='page-break-before: always;'></div>" . repeater(' ', 43);
$report = preg_replace('/\* \* \*[\s\S]+?USER REF./', $split, $report);
$output = "";
$output = '<pre>';
$length = strlen($report);
$count = $length / 81;
$position = 1;
for ($i = 0; $i < $count; $i++) {
if (strpos(substr($report, $position, 80), 'THIS FORM PRODUCED BY EQUIFAX') === FALSE) {
$output .= substr($report, $position, 80) . '<br>';
}
if ($i == 32) {
$output .= '</pre><pre>';
}
$position += 81;
}
$output .= '</pre>';
return $output;
}
Here is screenshot how pdf looks like.
Please help me to improve the timing of pdf, currently taking more than 10min for 10-page pdf.