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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.imagecolorsforindex" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>imagecolorsforindex</refname>
<refpurpose>Get the colors for an index</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>array</type><methodname>imagecolorsforindex</methodname>
<methodparam><type>GdImage</type><parameter>image</parameter></methodparam>
<methodparam><type>int</type><parameter>color</parameter></methodparam>
</methodsynopsis>
<para>
Gets the color for a specified index.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
&gd.image.description;
<varlistentry>
<term><parameter>color</parameter></term>
<listitem>
<para>
The color index.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an associative array with red, green, blue and alpha keys that
contain the appropriate values for the specified color index.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
&gd.changelog.image-param;
<row>
<entry>8.0.0</entry>
<entry>
<function>imagecolorsforindex</function> now throws a <classname>ValueError</classname> exception
if <parameter>color</parameter> is out of range; previously, &false; was returned instead.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>imagecolorsforindex</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// open an image
$im = imagecreatefrompng('nexen.png');
// get a color
$start_x = 40;
$start_y = 50;
$color_index = imagecolorat($im, $start_x, $start_y);
// make it human readable
$color_tran = imagecolorsforindex($im, $color_index);
// what is it ?
print_r($color_tran);
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Array
(
[red] => 226
[green] => 222
[blue] => 252
[alpha] => 0
)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><function>imagecolorat</function></member>
<member><function>imagecolorexact</function></member>
</simplelist>
</refsect1>
</refentry>
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