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<title>Makes the colors of the palette version of an image more closely match the true color version</title>
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<h1 class="refname">imagecolormatch</h1>
<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">imagecolormatch</span> — <span class="dc-title">Makes the colors of the palette version of an image more closely match the true color version</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.imagecolormatch-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>imagecolormatch</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image1</code></span>
, <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image2</code></span>
)</div>
<p class="para rdfs-comment">
Makes the colors of the palette version of an image more closely match the true color version.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.imagecolormatch-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">image1</code></em></span>
<dd>
<p class="para">
A truecolor image link resource.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">image2</code></em></span>
<dd>
<p class="para">
A palette image link resource pointing to an image that has the same
size as <em><code class="parameter">image1</code></em>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.imagecolormatch-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.imagecolormatch-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-3193">
<p><strong>Example #1 <span class="function"><strong>imagecolormatch()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Setup the true color and palette images<br /></span><span style="color: #0000BB">$im1 </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #DD0000">'./gdlogo.png'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$im2 </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreate</span><span style="color: #007700">(</span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$im1</span><span style="color: #007700">), </span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im1</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">// Add some colors to $im2<br /></span><span style="color: #0000BB">$colors </span><span style="color: #007700">= Array();<br /></span><span style="color: #0000BB">$colors</span><span style="color: #007700">[] = </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">36</span><span style="color: #007700">, </span><span style="color: #0000BB">74</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$colors</span><span style="color: #007700">[] = </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">, </span><span style="color: #0000BB">40</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">240</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$colors</span><span style="color: #007700">[] = </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">, </span><span style="color: #0000BB">82</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$colors</span><span style="color: #007700">[] = </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">, </span><span style="color: #0000BB">84</span><span style="color: #007700">, </span><span style="color: #0000BB">63</span><span style="color: #007700">, </span><span style="color: #0000BB">44</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Match these colors with the true color image<br /></span><span style="color: #0000BB">imagecolormatch</span><span style="color: #007700">(</span><span style="color: #0000BB">$im1</span><span style="color: #007700">, </span><span style="color: #0000BB">$im2</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Free from memory<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</div>
<div class="refsect1 notes" id="refsect1-function.imagecolormatch-notes">
<h3 class="title">Notes</h3>
<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">This function is only available if
PHP is compiled with the bundled version of the GD library.</span></p></blockquote>
<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">This function requires GD 2.0.1 or later (2.0.28 or later is recommended).</span></p></blockquote>
</div>
<div class="refsect1 seealso" id="refsect1-function.imagecolormatch-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.imagecreatetruecolor.html" class="function" rel="rdfs-seeAlso">imagecreatetruecolor()</a> - Create a new true color image</span></li>
</ul>
</p>
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