<!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>Finds whether the type of a variable is float</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.is-double.html">is_double</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.is-int.html">is_int</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-float" class="refentry"> <div class="refnamediv"> <h1 class="refname">is_float</h1> <p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">is_float</span> — <span class="dc-title">Finds whether the type of a variable is float</span></p> </div> <div class="refsect1 description" id="refsect1-function.is-float-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>is_float</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"> Finds whether the type of the given variable is float. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use <span class="function"><a href="function.is-numeric.html" class="function">is_numeric()</a></span>. </p> </p></blockquote> </div> <div class="refsect1 parameters" id="refsect1-function.is-float-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <code class="parameter">var</code></dt> <dd> <p class="para"> The variable being evaluated. </p> </dd> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.is-float-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> if <code class="parameter">var</code> is a <span class="type"><a href="language.types.float.html" class="type float">float</a></span>, <strong><code>FALSE</code></strong> otherwise. </p> </div> <div class="refsect1 examples" id="refsect1-function.is-float-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-6501"> <p><strong>Example #1 <span class="function"><strong>is_float()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> var_dump(is_float(27.25));<br />var_dump(is_float('abc'));<br />var_dump(is_float(23));<br />var_dump(is_float(23.5));<br />var_dump(is_float(1e7)); //Scientific Notation<br />var_dump(is_float(true));<br />?></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> bool(true) bool(false) bool(false) bool(true) bool(true) bool(false) </pre></div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-function.is-float-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <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> <li class="member"><span class="function"><a href="function.is-int.html" class="function" rel="rdfs-seeAlso">is_int()</a> - Find whether the type of a variable is integer</span></li> <li class="member"><span class="function"><a href="function.is-numeric.html" class="function" rel="rdfs-seeAlso">is_numeric()</a> - Finds whether a variable is a number or a numeric string</span></li> <li class="member"><span class="function"><a href="function.is-string.html" class="function" rel="rdfs-seeAlso">is_string()</a> - Find whether the type of a variable is string</span></li> <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> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; 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