PDF is not generated in codeigniter and display blank - php

Question

I am working in codeigniter.I have downloaded TCPDF for creating pdf. I have followed all step for generating pdf in codeigniter.
My controller is:
function list_branch_report()
{
if($this->input->post('submit'))
{
$this->load->library('Pdf');
$pdf = new Pdf('P', 'mm', 'A4', true, 'UTF-8', false);
$pdf->SetTitle('Pdf Example');
$pdf->SetHeaderMargin(30);
$pdf->SetTopMargin(20);
$pdf->setFooterMargin(20);
$pdf->SetAutoPageBreak(true);
$pdf->SetAuthor('Author');
$pdf->SetDisplayMode('real', 'default');
$pdf->Write(5, 'CodeIgniter TCPDF Integration');
$pdf->AddPage();
$pdf->Output('pdfexample.pdf', 'I');
$branch_id = $this->input->post('br_name');
$branch_code = $this->input->post('branch_code');
$query1 = $this->db->query("select * from branch_bal where branch_id = '$branch_id'");
$result1 = $query1->result();
$query2 = $this->db->query("select * from cash_depo where bid = '$branch_id'");
$result2 = $query2->result();
$this->load->view("admin/list_branch_report",array('br_result'=>$result1,'cash_result'=>$result2,'b_code'=>$branch_code));
}
And my view page is:
<div style="float:left;width:100%">
<center><h1> Branch Report </h1></center>
</div>
When I try to generate pdf then it will display blank.

Answer 1

where are you writing HTML to PDF I haven't work on tcpdf but as my experience with mpdf as far as i know
there should a function like
$pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);
please refer tcpdf documentation for writeHTML() or writeHTMLCell() functions
http://www.tcpdf.org/doc/code/classTCPDF.html
or refer examples
http://www.tcpdf.org/examples.php
you have to assign codeigniter view to variable for that give last attribute as true
$html= $this->load->view("admin/list_branch_report",array('br_result'=>$result1,'cash_result'=>$result2,'b_code'=>$branch_code),true);
and then assign this to
$pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);

Answer 2

I have written ob_start(); before the load view page.Then i have written
$html = $this->load->view("admin/list_branch_report",array('br_result'=>$result1,'cash_result'=>$result2,'b_code'=>$branch_code),true);
$pdf->writeHTML($html, true, false, true, false, '');
ob_clean();
$pdf->Output();
this code.
So it works perfect.
Thanks to all.

Answer 3

use mpdf instead of tpdf and send html that you want to convert in pdf.