<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Find out the number of colors in an image's palette</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagecolorsforindex.html">imagecolorsforindex</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagecolortransparent.html">imagecolortransparent</a></div> <div class="up"><a href="ref.image.html">GD and Image Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.imagecolorstotal" class="refentry"> <div class="refnamediv"> <h1 class="refname">imagecolorstotal</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">imagecolorstotal</span> — <span class="dc-title">Find out the number of colors in an image's palette</span></p> </div> <div class="refsect1 description" id="refsect1-function.imagecolorstotal-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><strong>imagecolorstotal</strong></span> ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span> )</div> <p class="para rdfs-comment"> Returns the number of colors in an image palette. </p> </div> <div class="refsect1 parameters" id="refsect1-function.imagecolorstotal-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">image</code></em></span> <dd> <p class="para"> An image resource, returned by one of the image creation functions, such as <span class="function"><a href="function.imagecreatefromgif.html" class="function">imagecreatefromgif()</a></span>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.imagecolorstotal-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the number of colors in the specified image's palette or 0 for truecolor images. </p> </div> <div class="refsect1 examples" id="refsect1-function.imagecolorstotal-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3198"> <p><strong>Example #1 Getting total number of colors in an image using <span class="function"><strong>imagecolorstotal()</strong></span></strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Create image instance<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefromgif</span><span style="color: #007700">(</span><span style="color: #DD0000">'php.gif'</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">'Total colors in image: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">imagecolorstotal</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Free image<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> Total colors in image: 128 </pre></div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-function.imagecolorstotal-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.imagecolorat.html" class="function" rel="rdfs-seeAlso">imagecolorat()</a> - Get the index of the color of a pixel</span></li> <li class="member"> <span class="function"><a href="function.imagecolorsforindex.html" class="function" rel="rdfs-seeAlso">imagecolorsforindex()</a> - Get the colors for an index</span></li> <li class="member"> <span class="function"><a href="function.imageistruecolor.html" class="function" rel="rdfs-seeAlso">imageistruecolor()</a> - Finds whether an image is a truecolor image</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; 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