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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<chapter xml:id="image.setup" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
&reftitle.setup;
<!-- {{{ Requirements -->
<section xml:id="image.requirements">
&reftitle.required;
<para>
If you have the <acronym>GD</acronym> library (available at <link
xlink:href="&url.gd;">&url.gd;</link>) 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.
<note>
<simpara>
libgd-2.1.0 or higher is required. Alternatively, use
the bundled <acronym>GD</acronym> library that ships with PHP.
</simpara>
</note>
<note>
<simpara>
The <acronym>GD</acronym> library requires zlib >= 1.2.0.4.
</simpara>
</note>
</para>
<para>
You may wish to enhance <acronym>GD</acronym> to handle more image formats.
<table>
<title>Supported image formats</title>
<tgroup cols="3">
<thead>
<row>
<entry>Image format</entry>
<entry>Library to download</entry>
<entry>Notes</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>gif</literal></entry>
<entry></entry>
<entry></entry>
</row>
<row>
<entry><literal>avif</literal></entry>
<entry></entry>
<entry></entry>
</row>
<row>
<entry><literal>jpeg</literal></entry>
<entry><link xlink:href="&url.jpeg;">&url.jpeg;</link></entry>
<entry>
When building the jpeg library (prior to building PHP) you
must use the <option role="configure">--enable-shared</option>
option in the configure step. If you do not, you will receive
an error saying <literal>libjpeg.(a|so) not found</literal>
when you get to the configure step of building PHP.
</entry>
</row>
<row>
<entry><literal>png</literal></entry>
<entry><link xlink:href="&url.libpng;">&url.libpng;</link></entry>
<entry>
</entry>
</row>
<row>
<entry><literal>xpm</literal></entry>
<entry><link xlink:href="&url.libxpm;">&url.libxpm;</link></entry>
<entry>
It's likely you have this library already available, if your system
has an installed X-Environment.
</entry>
</row>
<row>
<entry><literal>webp</literal></entry>
<entry></entry>
<entry></entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<para>
You may wish to enhance <acronym>GD</acronym> to deal with different fonts.
The <link xlink:href="&url.freetype;">FreeType 2</link> library is supported.
</para>
</section>
<!-- }}} -->
<!-- {{{ Installation -->
&reference.image.configure;
<!-- }}} -->
<!-- {{{ Configuration -->
&reference.image.ini;
<!-- }}} -->
<!-- {{{ Resources -->
<section xml:id="image.resources">
&reftitle.resources;
<para>
This extension defines the following resource types:
<table>
<title>List of resource types in GD</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name</entry>
<entry>Description</entry>
<entry>Notes</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>gd</literal></entry>
<entry>Image resource, used by functions like <function>imagecreatefrompng</function></entry>
<entry>Prior to PHP 8.0.0</entry>
</row>
<row>
<entry><literal>gd font</literal></entry>
<entry>Font resource internally created by <function>imageloadfont</function></entry>
<entry>Prior to PHP 8.1.0</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</section>
<!-- }}} -->
</chapter>
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sgml-always-quote-attributes:t
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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-->
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