Allowed Memory size --- exhausted

[Manny]

I am creating PDFs properly and dynamically, but when the output is
very large .. (printed html is 30 pages long) I get the allowed memory
size exhausted.. How can I prevent this?

[BrianS]

The simple answers:

1. increase your PHP memory limit
2. simplify your HTML
   

A little less simple, break up your document into multiple parts and render them separately. You can then use something like pdftk to put them all together.

Something more appropriate to your situation requires additional info. Which version of DOMPDF are you using? Does the document use tables extensively? What is your PHP version? PHP memory limit? Can we see the HTML?

[soso]

I solved this problem (hopefully forever) by generating batches of a
few pages (or even one page) then at the end use pdftk to merge all
pages in one single pdf. Works like a charm.

[soso]

By the way, generating batches of one-page multiples (one page per
request) and merging at the end is really much faster then generating
the whole pdf. Even if memory is not exhausted.

[Manny]

Thank you for all the replies, I have looked into the pdftk option,
and it seems like I can not implement that in the server that I am
"hosting" at since I do not have access to root ..

Alternatives to it?

[Jon Ljunggren]

Hi!

I can recommend fpdf (http://www.fpdf.org/) instead of pdftk. It's a very useful pdf-class, so no need for root or command-line. I'm using it together with dompdf. I also use the FPDI (http://www.setasign.de/products/pdf-php-solutions/fpdi/) extension to merge multiple pdfs into bigger ones. It works fine. Good luck!

/Jon

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[John Colvin]

If you know where the page breaks should be in your document, see the
discussions here:

http://groups.google.com/group/dompdf/browse_thread/thread/a39c007e4da5bde
http://code.google.com/p/dompdf/issues/detail?id=225