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<title>Retrieve the embedded thumbnail of a TIFF or JPEG image</title>
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<h1 class="refname">exif_thumbnail</h1>
<p class="verinfo">(PHP 4 >= 4.2.0, PHP 5)</p><p class="refpurpose"><span class="refname">exif_thumbnail</span> — <span class="dc-title">Retrieve the embedded thumbnail of a TIFF or JPEG image</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.exif-thumbnail-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>exif_thumbnail</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter reference">&$width</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter reference">&$height</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter reference">&$imagetype</code></span>
]]] )</div>
<p class="para rdfs-comment">
<span class="function"><strong>exif_thumbnail()</strong></span> reads the embedded thumbnail of a
<acronym title="Tagged Image File Format">TIFF</acronym> or <acronym title="Joint Photographic Experts Group">JPEG</acronym> image.
</p>
<p class="para">
If you want to deliver thumbnails through this function, you should send
the mimetype information using the <span class="function"><a href="function.header.html" class="function">header()</a></span> function.
</p>
<p class="para">
It is possible that <span class="function"><strong>exif_thumbnail()</strong></span> cannot create an
image but can determine its size. In this case, the return value is
<strong><code>FALSE</code></strong> but <em><code class="parameter">width</code></em> and <em><code class="parameter">height</code></em>
are set.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.exif-thumbnail-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">filename</code></em></span>
<dd>
<p class="para">
The name of the image file being read. This image contains an
embedded thumbnail.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">width</code></em></span>
<dd>
<p class="para">
The return width of the returned thumbnail.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">height</code></em></span>
<dd>
<p class="para">
The returned height of the returned thumbnail.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">imagetype</code></em></span>
<dd>
<p class="para">
The returned image type of the returned thumbnail. This is either
<acronym title="Tagged Image File Format">TIFF</acronym> or <acronym title="Joint Photographic Experts Group">JPEG</acronym>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.exif-thumbnail-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the embedded thumbnail, or <strong><code>FALSE</code></strong> if the image contains no
thumbnail.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.exif-thumbnail-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>4.3.0</td>
<td>
The optional parameters <em><code class="parameter">width</code></em>,
<em><code class="parameter">height</code></em>, and <em><code class="parameter">imagetype</code></em>
all became available.
</td>
</tr>
<tr>
<td>4.3.0</td>
<td>
May return thumbnails in the <acronym title="Tagged Image File Format">TIFF</acronym> format.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.exif-thumbnail-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3165">
<p><strong>Example #1 <span class="function"><strong>exif_thumbnail()</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: #007700">if (</span><span style="color: #0000BB">array_key_exists</span><span style="color: #007700">(</span><span style="color: #DD0000">'file'</span><span style="color: #007700">, </span><span style="color: #0000BB">$_REQUEST</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">$image </span><span style="color: #007700">= </span><span style="color: #0000BB">exif_thumbnail</span><span style="color: #007700">(</span><span style="color: #0000BB">$_REQUEST</span><span style="color: #007700">[</span><span style="color: #DD0000">'file'</span><span style="color: #007700">], </span><span style="color: #0000BB">$width</span><span style="color: #007700">, </span><span style="color: #0000BB">$height</span><span style="color: #007700">, </span><span style="color: #0000BB">$type</span><span style="color: #007700">);<br />} else {<br /> </span><span style="color: #0000BB">$image </span><span style="color: #007700">= </span><span style="color: #0000BB">false</span><span style="color: #007700">;<br />}<br />if (</span><span style="color: #0000BB">$image</span><span style="color: #007700">!==</span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: ' </span><span style="color: #007700">.</span><span style="color: #0000BB">image_type_to_mime_type</span><span style="color: #007700">(</span><span style="color: #0000BB">$type</span><span style="color: #007700">));<br /> echo </span><span style="color: #0000BB">$image</span><span style="color: #007700">;<br /> exit;<br />} else {<br /> </span><span style="color: #FF8000">// no thumbnail available, handle the error here<br /> </span><span style="color: #007700">echo </span><span style="color: #DD0000">'No thumbnail available'</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.exif-thumbnail-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.exif-read-data.html" class="function" rel="rdfs-seeAlso">exif_read_data()</a> - Reads the EXIF headers from JPEG or TIFF</span></li>
<li class="member"> <span class="function"><a href="function.image-type-to-mime-type.html" class="function" rel="rdfs-seeAlso">image_type_to_mime_type()</a> - Get Mime-Type for image-type returned by getimagesize,
exif_read_data, exif_thumbnail, exif_imagetype</span></li>
</ul>
</p>
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