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- PHP 4.1.0 or newer (PHP 5 is supported)
native PHP DOM XML
Active-Link DOM XML extension installed
GD PHP Image Extension, version 2.0.28 or newer.
Note that you may use GD starting with version 2.0.1, but you will lack GIF support.
If your system satisfies this requirements, you will be able to generate uncompressed
Postscript files. Use GhostView
or any other Postscript viewer to view/print these files. Note that Acrobat
Reader cannot read Poscript files!
Also, use native DOM XML PHP extension if possible.
PHP extension -- allows compressed Postscript file generation. Compression
greatly reduces the generated file size, up to 5-7 times, saving significant
version 7.05 or newer -- allows generation of PDF files (strictly speaking,
script generates Postscript file, then converts it to PDF using Ghostscript).
Please note that you'll need to have the ghostscript fonts package intalled
in order for this conversion to work!. Also, keep in mind that Ghostscript
is an external program, so you'll need to have the exec function enabled
in your PHP configuration; if you're using PHP in safe mode, it is probably
disabled. It might be disabled even if safe mode is not in use. Please check
with your system administrator regarding the availability of the exec
-- allows direct PDF generation; in general, PDF files generated via PDFLIB
have better image quality and renders a little bit faster than PDFs created
using Ghostscript. Nevertheless, PDFLIB is a non-free library, so you'll probably
will need to buy a license for it.
If your system satisfies this requirements, you will be able to generated both
Postscript and PDF files.
Note: You can choose either Ghostscript or PDFLIB (or both). Only one of these
packages is needed for PDF generation. Another option is to use the FPdf libraries,
which are bundled with html2ps/pdf. Using this method to generate PDFs is slower,
but does not require external libraries.
PHP extension -- allows faster and more stable HTML page conversion from different
charsets (you can ignore this requirement if the pages you're working with
do not contain non-iso-8859-1 symbols -- central european or cyrillic, for
Systems satisfying these recommended requirements will have a minor boost in
Recommended PHP configuration settings:
- PHP Memory limit should be set to 32-62 megabytes;
- PHP Script time execution limit should be set to 2-3 minutes;
Systems NOT satisfying these requirements MAY be not able to process complicated
pages with big images. The exact values of these variables should be determined
experimentally (trial and error).
version 7.05 or newer and GSView
-- to view generated compressed and uncompressed files and to convert them
to PDF on the client side.
Acrobat Distiller -- to convert Postscript files to PDF on the client
size (Ghostscript alternative).
Acrobat Reader -- to view PDF files.