DOMPDF - PHP-HTML to PDF conversion?

Question

I have a php file of which I want to generate a PDF using dompdf, I have tried it with the code below but I can't get the html of the file from php, any idea on how to get the html elements from php file?

    <?php
    require_once("dompdf/dompdf_config.inc.php");
    ob_start();        
    ?>
    <html>
     <body>
     <?php
         //Code for a colored table
     ?>
     <form method=post action=#><input type=submit name=submit id=submit value="Create PDF"></form>
     </body>
    <html>

    <?php
        if((isset($_POST['submit'])))
        {
            $html = ob_get_contents(); 
                ob_end_flush();
            $dompdf = new DOMPDF();
            $dompdf->load_html($html);
            $dompdf->render();
            $dompdf->stream("Time Table.pdf");
        }
    ?>

EDIT: It now gives an error:

Fatal Error: Maximum execution time of 30 seconds exceeded in .../

I don't see anything out of sorts here. What do you get when you submit the form? Do you get any errors? — BrianS
– BrianS, Commented Jul 30, 2013 at 1:20

Tom Metcalfe · Accepted Answer · 2013-07-30 12:49:07Z

1

Not sure how much this matters but your html closing tag is actually just another open html tag. Try closing it and changing your code to the following :

 <?php
    require_once("dompdf/dompdf_config.inc.php");
    ob_start();        
    ?>
    <html>
     <body>
     <?php
         //Code for a colored table
     ?>
     <form method=post action=#><input type=submit name=submit id=submit value="Create PDF"></form>
     </body>
    </html>

    <?php
        if((isset($_POST['submit'])))
        {
            $html = ob_get_contents(); 
                ob_end_flush();
            $dompdf = new DOMPDF();
            $dompdf->load_html($html);
            $dompdf->render();
            $dompdf->stream("Time Table.pdf");
        }
    ?>

answered Jul 30, 2013 at 12:49

Tom Metcalfe

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4 Comments

TKA Over a year ago

Sorry that was a typo, my code generates pdf but is a corrupted pdf file! also it give fatal error: Maximum execution time exceeds 30s

BrianS Over a year ago

@TKA If the PDF is corrupted some PHP errors/notices may be leaking into the output stream. Save the PDF and open it in a text editor to see if that's the case. The errors will be at the top of the file.

TKA Over a year ago

@BrianS but I do get the result when I echo the $html

BrianS Over a year ago

@TKA as I said, a corrupted PDF is often because some non-PDF content is injected into the output stream. That doesn't mean the HTML is invalid, or even that the PDF is invalid. It just means there is extra, non-PDF content interfering with your PDF reader's parsing of the document. You could just comment out $dompdf->stream() and see what is returned.

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