php-doc-en/reference/image/reference.xml
Friedhelm Betz 2a0133edf5 new structure and constants added
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@84025 c90b9560-bf6c-de11-be94-00142212c4b1
2002-05-29 17:34:10 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
<reference id="ref.image">
<title>Image functions</title>
<titleabbrev>Image</titleabbrev>
<partintro>
<section id="image.intro">
&reftitle.intro;
<para>
You can use the image functions in PHP to get the size of
<acronym>JPEG</acronym>, <acronym>GIF</acronym>,
<acronym>PNG</acronym>, <acronym>SWF</acronym>,
<acronym>TIFF</acronym> and <acronym>JPEG2000</acronym> images.
</para>
</section>
<section id="image.requirenments">
&reftitle.required;
<para>
If you have the <acronym>GD</acronym> library (available at <ulink
url="&url.gd;">&url.gd;</ulink>) you will also be able to create
and manipulate images.
</para>
<para>
The format of images you are able to manipulate depend on the
version of <acronym>GD</acronym> you install, and any other libraries
<acronym>GD</acronym> might need to access those image formats.
Versions of <acronym>GD</acronym> older than gd-1.6
support gif format images, and do not support png, where versions
greater than gd-1.6 support png, not gif.
</para>
<para>
If you have PHP compiled with <option role="configure">--enable-exif</option>
you are able to work with information stored in headers of
<acronym>JPEG</acronym> and <acronym>TIFF</acronym> images. These
functions do not require the <acronym>GD</acronym> library.
</para>
</section>
<section id="image.installation">
&reftitle.install;
<para>
In order to read and write images in jpeg format, you will need to
obtain and install jpeg-6b (available at
<ulink url="&url.jpeg;">&url.jpeg;</ulink>), and then recompile
<acronym>GD</acronym> to make use of jpeg-6b. You will also have to
compile PHP with
<option role="configure">--with-jpeg-dir=/path/to/jpeg-6b</option>.
</para>
<para>
To add support for Type 1 fonts, you can install t1lib (available
at <ulink url="&url.t1lib;">&url.t1lib;</ulink>), and then add
<option role="configure">--with-t1lib[=dir]</option>.
</para>
</section>
<section id="image.configuration">
&reftitle.runtime;
&no.config;
</section>
<section id="image.resources">
&reftitle.resources;
&no.resource;
</section>
&reference.image.constants;
</partintro>
&reference.image.functions;
</reference>
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