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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title>Draws an arc</title>  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imageantialias.html">imageantialias</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagechar.html">imagechar</a></div> <div class="up"><a href="ref.image.html">GD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.imagearc" class="refentry"> <div class="refnamediv">  <h1 class="refname">imagearc</h1>  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">imagearc</span> &mdash; <span class="dc-title">Draws an arc</span></p> </div> <div class="refsect1 description">  <h3 class="title">Description</h3>  <div class="methodsynopsis dc-description">   <span class="type">bool</span> <span class="methodname"><b><b>imagearc</b></b></span>    ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$image</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$cx</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$cy</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$width</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$height</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$start</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$end</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$color</tt></span>   )</div>  <p class="para rdfs-comment">   <b>imagearc()</b> draws an arc of circle centered at the given   coordinates.  </p> </div> <div class="refsect1 parameters">  <h3 class="title">Parameters</h3>  <p class="para">   <dl>    <dt><span class="term"><i><tt class="parameter">image</tt></i></span><dd><p class="para">An image resource, returned by one of the image creation functions, such as <a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a>.</p></dd></dt>    <dt>     <span class="term"><i><tt class="parameter">cx</tt></i></span>     <dd>      <p class="para">       x-coordinate of the center.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">cy</tt></i></span>     <dd>      <p class="para">       y-coordinate of the center.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">width</tt></i></span>     <dd>      <p class="para">       The arc width.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">height</tt></i></span>     <dd>      <p class="para">       The arc height.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">start</tt></i></span>     <dd>      <p class="para">       The arc start angle, in degrees.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">end</tt></i></span>     <dd>      <p class="para">       The arc end angle, in degrees.       0掳 is located at the three-o&#039;clock position, and the arc is drawn       clockwise.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">color</tt></i></span>     <dd>      <p class="para">       A color identifier created with        <a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a>.      </p>     </dd>    </dt>   </dl>  </p> </div> <div class="refsect1 returnvalues">  <h3 class="title">Return Values</h3>  <p class="para">   Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure.  </p> </div> <div class="refsect1 examples">  <h3 class="title">Examples</h3>  <p class="para">   <div class="example">    <p><b>Example #1 Drawing a circle with <b>imagearc()</b></b></p>    <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">//&nbsp;create&nbsp;a&nbsp;200*200&nbsp;image<br /></span><span style="color: #0000BB">$img&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">200</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">200</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;allocate&nbsp;some&nbsp;colors<br /></span><span style="color: #0000BB">$white&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$red&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">,&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$green&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">,&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$blue&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;draw&nbsp;the&nbsp;head<br /></span><span style="color: #0000BB">imagearc</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">100</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">100</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">200</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">200</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">360</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$white</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">//&nbsp;mouth<br /></span><span style="color: #0000BB">imagearc</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">100</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">100</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">150</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">150</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">25</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">155</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$red</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">//&nbsp;left&nbsp;and&nbsp;then&nbsp;the&nbsp;right&nbsp;eye<br /></span><span style="color: #0000BB">imagearc</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">60</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">75</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">50</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">50</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">360</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$green</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagearc</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">140</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">75</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">50</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">50</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">360</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$blue</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;output&nbsp;image&nbsp;in&nbsp;the&nbsp;browser<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-type:&nbsp;image/png"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;free&nbsp;memory<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$img</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>    </div>    <div class="example-contents"><p>The above example will output something similar to:</p></div>    <div class="mediaobject">     <div class="imageobject">      <img src="figures/image.imagearc.png" />     </div>    </div>   </div>  </p> </div> <div class="refsect1 seealso">  <h3 class="title">See Also</h3>  <p class="para">   <ul class="simplelist">    <li class="member"><a href="function.imagefilledarc.html" class="function" rel="rdfs-seeAlso">imagefilledarc()</a></li>    <li class="member"><a href="function.imageellipse.html" class="function" rel="rdfs-seeAlso">imageellipse()</a></li>    <li class="member"><a href="function.imagefilledellipse.html" class="function" rel="rdfs-seeAlso">imagefilledellipse()</a></li>   </ul>  </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imageantialias.html">imageantialias</a></div> <div class="next" style="text-align: right; float: right;"><a 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