<!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>Calculate the product of values in an array</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.array-pop.html">array_pop</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.array-push.html">array_push</a></div> <div class="up"><a href="ref.array.html">Array Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.array-product" class="refentry"> <div class="refnamediv"> <h1 class="refname">array_product</h1> <p class="verinfo">(PHP 5 >= 5.1.0)</p><p class="refpurpose"><span class="refname">array_product</span> — <span class="dc-title">Calculate the product of values in an array</span></p> </div> <div class="refsect1 description" id="refsect1-function.array-product-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.number" class="type number">number</a></span> <span class="methodname"><strong>array_product</strong></span> ( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array</code></span> )</div> <p class="para rdfs-comment"> <span class="function"><strong>array_product()</strong></span> returns the product of values in an array. </p> </div> <div class="refsect1 parameters" id="refsect1-function.array-product-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">array</code></em></span> <dd> <p class="para"> The array. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.array-product-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the product as an integer or float. </p> </div> <div class="refsect1 changelog" id="refsect1-function.array-product-changelog"> <h3 class="title">Changelog</h3> <p class="para"> <table class="doctable informaltable"> <thead> <tr> <th>Version</th> <th>Description</th> </tr> </thead> <tbody class="tbody"> <tr> <td>5.3.6</td> <td> The product of an empty array is now 1, when before this function would return 0 for an empty array. </td> </tr> </tbody> </table> </p> </div> <div class="refsect1 examples" id="refsect1-function.array-product-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-4972"> <p><strong>Example #1 <span class="function"><strong>array_product()</strong></span> examples</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /><br />$a </span><span style="color: #007700">= array(</span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">4</span><span style="color: #007700">, </span><span style="color: #0000BB">6</span><span style="color: #007700">, </span><span style="color: #0000BB">8</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"product(a) = " </span><span style="color: #007700">. </span><span style="color: #0000BB">array_product</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">"product(array()) = " </span><span style="color: #007700">. </span><span style="color: #0000BB">array_product</span><span style="color: #007700">(array()) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> product(a) = 384 product(array()) = 1 </pre></div> </div> </div> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.array-pop.html">array_pop</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.array-push.html">array_push</a></div> <div class="up"><a href="ref.array.html">Array Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>