<!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>Verify that the contents of a variable is a countable value</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.is-callable.html">is_callable</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.is-double.html">is_double</a></div> <div class="up"><a href="ref.var.html">Variable handling Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.is-countable" class="refentry"> <div class="refnamediv"> <h1 class="refname">is_countable</h1> <p class="verinfo">(PHP 7 >= 7.3.0)</p><p class="refpurpose"><span class="refname">is_countable</span> — <span class="dc-title"> Verify that the contents of a variable is a countable value </span></p> </div> <div class="refsect1 description" id="refsect1-function.is-countable-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>is_countable</strong></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">$var</code></span> )</div> <p class="para rdfs-comment"> Verify that the contents of a variable is an <span class="type"><a href="language.types.array.html" class="type array">array</a></span> or an object implementing <a href="class.countable.html" class="classname">Countable</a> </p> </div> <div class="refsect1 parameters" id="refsect1-function.is-countable-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <code class="parameter">var</code></dt> <dd> <p class="para"> The value to check </p> </dd> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.is-countable-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> if <code class="parameter">var</code> is countable, <strong><code>FALSE</code></strong> otherwise. </p> </div> <div class="refsect1 changelog" id="refsect1-function.is-countable-changelog"> <h3 class="title">Changelog</h3> <table class="doctable informaltable"> <thead> <tr> <th>Version</th> <th>Description</th> </tr> </thead> <tbody class="tbody"> <tr> <td>7.3.0</td> <td> <span class="function"><strong>is_countable()</strong></span> has been added. </td> </tr> </tbody> </table> </div> <div class="refsect1 examples" id="refsect1-function.is-countable-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-6500"> <p><strong>Example #1 <span class="function"><strong>is_countable()</strong></span> examples</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">is_countable</span><span style="color: #007700">([</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">])); </span><span style="color: #FF8000">// bool(true)<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">is_countable</span><span style="color: #007700">(new </span><span style="color: #0000BB">ArrayIterator</span><span style="color: #007700">([</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">, </span><span style="color: #DD0000">'bar'</span><span style="color: #007700">, </span><span style="color: #DD0000">'baz'</span><span style="color: #007700">]))); </span><span style="color: #FF8000">// bool(true)<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">is_countable</span><span style="color: #007700">(new </span><span style="color: #0000BB">ArrayIterator</span><span style="color: #007700">())); </span><span style="color: #FF8000">// bool(true)<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">is_countable</span><span style="color: #007700">(new </span><span style="color: #0000BB">stdClass</span><span style="color: #007700">())); </span><span style="color: #FF8000">// bool(false)</span> </span> </code></div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-function.is-countable-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><span class="function"><a href="function.is-array.html" class="function" rel="rdfs-seeAlso">is_array()</a> - Finds whether a variable is an array</span></li> <li class="member"><span class="function"><a href="function.is-object.html" class="function" rel="rdfs-seeAlso">is_object()</a> - Finds whether a variable is an object</span></li> <li class="member"><span class="function"><a href="function.is-iterable.html" class="function" rel="rdfs-seeAlso">is_iterable()</a> - Verify that the contents of a variable is an iterable value</span></li> <li class="member"><span class="function"><a href="function.is-bool.html" class="function" rel="rdfs-seeAlso">is_bool()</a> - Finds out whether a variable is a boolean</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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