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<title>Output GD image to browser or file</title>
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<h1 class="refname">imagegd</h1>
<p class="verinfo">(PHP 4 >= 4.0.7, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">imagegd</span> — <span class="dc-title">Output GD image to browser or file</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.imagegd-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>imagegd</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span>
[, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$to</code><span class="initializer"> = NULL</span></span>
] )</div>
<p class="para rdfs-comment">
Outputs a GD image to the given <code class="parameter">to</code>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.imagegd-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">
image</code></dt>
<dd>
<p class="para">An image resource, returned by one of the image creation functions,
such as <span class="function"><a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>.</p></dd>
<dt>
<code class="parameter">to</code></dt>
<dd>
<p class="para">The path or an open stream resource (which is automatically being closed after this function returns) to save the file to. If not set or <strong><code>NULL</code></strong>, the raw image stream will be outputted directly.</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.imagegd-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 class="caution"><strong class="caution">Caution</strong><p class="simpara">However, if libgd fails to output the image, this function returns <strong><code>TRUE</code></strong>.</p></div>
</div>
<div class="refsect1 changelog" id="refsect1-function.imagegd-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>7.2.0</td>
<td>
<span class="function"><strong>imagegd()</strong></span> now allows to output truecolor images.
Formerly, these have been implicitly converted to palette.
</td>
</tr>
<tr>
<td>5.4.0</td>
<td>
Added support for passing a stream <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span> to
<code class="parameter">to</code>.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.imagegd-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3813">
<p><strong>Example #1 Outputting a GD image</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 a blank image and add some text<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">120</span><span style="color: #007700">, </span><span style="color: #0000BB">20</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$text_color </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">233</span><span style="color: #007700">, </span><span style="color: #0000BB">14</span><span style="color: #007700">, </span><span style="color: #0000BB">91</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagestring</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #DD0000">"A Simple Text String"</span><span style="color: #007700">, </span><span style="color: #0000BB">$text_color</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Output the image<br /></span><span style="color: #0000BB">imagegd</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Free up memory<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
<p class="para">
<div class="example" id="example-3814">
<p><strong>Example #2 Saving a GD image</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Create a blank image and add some text<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">120</span><span style="color: #007700">, </span><span style="color: #0000BB">20</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$text_color </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">233</span><span style="color: #007700">, </span><span style="color: #0000BB">14</span><span style="color: #007700">, </span><span style="color: #0000BB">91</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagestring</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #DD0000">"A Simple Text String"</span><span style="color: #007700">, </span><span style="color: #0000BB">$text_color</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Save the gd image<br />// The file format for GD images is .gd, see http://www.libgd.org/GdFileFormats<br /></span><span style="color: #0000BB">imagegd</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #DD0000">'simple.gd'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Free up memory<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$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.imagegd-notes">
<h3 class="title">Notes</h3>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
The GD format is commonly used to allow fast loading of parts of images.
Note that the GD format is only usable in GD-compatible applications.
</p>
</p></blockquote>
</div>
<div class="refsect1 seealso" id="refsect1-function.imagegd-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.imagegd2.html" class="function" rel="rdfs-seeAlso">imagegd2()</a> - Output GD2 image to browser or file</span></li>
</ul>
</p>
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