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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.9 $ -->
<refentry xml:id="function.imagecopymerge" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>imagecopymerge</refname>
<refpurpose>Copy and merge part of an image</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>imagecopymerge</methodname>
<methodparam><type>resource</type><parameter>dst_im</parameter></methodparam>
<methodparam><type>resource</type><parameter>src_im</parameter></methodparam>
<methodparam><type>int</type><parameter>dst_x</parameter></methodparam>
<methodparam><type>int</type><parameter>dst_y</parameter></methodparam>
<methodparam><type>int</type><parameter>src_x</parameter></methodparam>
<methodparam><type>int</type><parameter>src_y</parameter></methodparam>
<methodparam><type>int</type><parameter>src_w</parameter></methodparam>
<methodparam><type>int</type><parameter>src_h</parameter></methodparam>
<methodparam><type>int</type><parameter>pct</parameter></methodparam>
</methodsynopsis>
<para>
Copy a part of <parameter>src_im</parameter> onto
<parameter>dst_im</parameter> starting at the x,y coordinates
<parameter>src_x</parameter>, <parameter>src_y </parameter> with
a width of <parameter>src_w</parameter> and a height of
<parameter>src_h</parameter>. The portion defined will be copied
onto the x,y coordinates, <parameter>dst_x</parameter> and
<parameter>dst_y</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>dst_im</parameter></term>
<listitem>
<para>
Destination image link resource.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>src_im</parameter></term>
<listitem>
<para>
Source image link resource.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>dst_x</parameter></term>
<listitem>
<para>
x-coordinate of destination point.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>dst_y</parameter></term>
<listitem>
<para>
y-coordinate of destination point.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>src_x</parameter></term>
<listitem>
<para>
x-coordinate of source point.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>src_y</parameter></term>
<listitem>
<para>
y-coordinate of source point.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>src_w</parameter></term>
<listitem>
<para>
Source width.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>src_h</parameter></term>
<listitem>
<para>
Source height.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>pct</parameter></term>
<listitem>
<para>
The two images will be merged according to <parameter>pct</parameter>
which can range from 0 to 100. When <parameter>pct</parameter> = 0,
no action is taken, when 100 this function behaves identically
to <function>imagecopy</function> for pallete images, while it
implements alpha transparency for true colour images.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Merging two copies of the PHP.net logo with 75% transparency</title>
<programlisting role="php">
<![CDATA[
<?php
// Create image instances
$dest = imagecreatefromgif('php.gif');
$src = imagecreatefromgif('php.gif');
// Copy and merge
imagecopymerge($dest, $src, 10, 10, 0, 0, 100, 47, 75);
// Output and free free from memory
header('Content-Type: image/gif');
imagegif($dest);
imagedestroy($dest);
imagedestroy($src);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
</refentry>
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