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<title>Concatenate two affine transformation matrices</title>
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<div class="refnamediv">
<h1 class="refname">imageaffinematrixconcat</h1>
<p class="verinfo">(PHP 5 >= 5.5.0, PHP 7)</p><p class="refpurpose"><span class="refname">imageaffinematrixconcat</span> — <span class="dc-title">Concatenate two affine transformation matrices</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.imageaffinematrixconcat-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">array</span> <span class="methodname"><strong>imageaffinematrixconcat</strong></span>
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$m1</code></span>
, <span class="methodparam"><span class="type">array</span> <code class="parameter">$m2</code></span>
)</div>
<p class="para rdfs-comment">
Returns the concatenation of two affine transformation matrices,
what is useful if multiple transformations should be applied to the same
image in one go.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.imageaffinematrixconcat-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<code class="parameter">m1</code></dt>
<dd>
<p class="para">
An affine transformation matrix (an array with keys
<em>0</em> to <em>5</em> and float values).
</p>
</dd>
<dt>
<code class="parameter">m2</code></dt>
<dd>
<p class="para">
An affine transformation matrix (an array with keys
<em>0</em> to <em>5</em> and float values).
</p>
</dd>
</dl>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.imageaffinematrixconcat-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
An affine transformation matrix (an array with keys
<em>0</em> to <em>5</em> and float values)
or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.imageaffinematrixconcat-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3738">
<p><strong>Example #1 <span class="function"><strong>imageaffinematrixconcat()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$m1 </span><span style="color: #007700">= </span><span style="color: #0000BB">imageaffinematrixget</span><span style="color: #007700">(</span><span style="color: #0000BB">IMG_AFFINE_TRANSLATE</span><span style="color: #007700">, array(</span><span style="color: #DD0000">'x' </span><span style="color: #007700">= </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #DD0000">'y' </span><span style="color: #007700">=> </span><span style="color: #0000BB">3</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$m2 </span><span style="color: #007700">= </span><span style="color: #0000BB">imageaffinematrixget</span><span style="color: #007700">(</span><span style="color: #0000BB">IMG_AFFINE_SCALE</span><span style="color: #007700">, array(</span><span style="color: #DD0000">'x' </span><span style="color: #007700">= </span><span style="color: #0000BB">4</span><span style="color: #007700">, </span><span style="color: #DD0000">'y' </span><span style="color: #007700">=> </span><span style="color: #0000BB">5</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$matrix </span><span style="color: #007700">= </span><span style="color: #0000BB">imageaffinematrixconcat</span><span style="color: #007700">(</span><span style="color: #0000BB">$m1</span><span style="color: #007700">, </span><span style="color: #0000BB">$m2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$matrix</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Array
(
[0] => 4
[1] => 0
[2] => 0
[3] => 5
[4] => 8
[5] => 15
)
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.imageaffinematrixconcat-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.imageaffine.html" class="function" rel="rdfs-seeAlso">imageaffine()</a> - Return an image containing the affine transformed src image, using an optional clipping area</span></li>
<li class="member"><span class="function"><a href="function.imageaffinematrixget.html" class="function" rel="rdfs-seeAlso">imageaffinematrixget()</a> - Get an affine transformation matrix</span></li>
</ul>
</p>
</div>
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