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<title>Get file extension for image type</title>
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<h1 class="refname">image_type_to_extension</h1>
<p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">image_type_to_extension</span> — <span class="dc-title">Get file extension for image type</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.image-type-to-extension-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>image_type_to_extension</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$imagetype</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$include_dot</code><span class="initializer"> = <strong><code>TRUE</code></strong></span></span>
] )</div>
<p class="para rdfs-comment">
Returns the extension for the given <em>IMAGETYPE_XXX</em>
constant.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.image-type-to-extension-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">imagetype</code></em></span>
<dd>
<p class="para">
One of the <em>IMAGETYPE_XXX</em> constant.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">include_dot</code></em></span>
<dd>
<p class="para">
Whether to prepend a dot to the extension or not. Default to <strong><code>TRUE</code></strong>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.image-type-to-extension-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
A string with the extension corresponding to the given image type.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.image-type-to-extension-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3175">
<p><strong>Example #1 <span class="function"><strong>image_type_to_extension()</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">// Create image instance<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Save image<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #DD0000">'./test' </span><span style="color: #007700">. </span><span style="color: #0000BB">image_type_to_extension</span><span style="color: #007700">(</span><span style="color: #0000BB">IMAGETYPE_PNG</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 notes" id="refsect1-function.image-type-to-extension-notes">
<h3 class="title">Notes</h3>
<blockquote class="note"><p><strong class="note">Note</strong>: <p class="para">This function does not require the GD image library.</p></p></blockquote>
</div>
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