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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.is-float" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>is_float</refname>
<refpurpose>Finds whether the type of a variable is float</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>is_float</methodname>
<methodparam><type>mixed</type><parameter>value</parameter></methodparam>
</methodsynopsis>
<para>
Finds whether the type of the given variable is float.
</para>
<note>
<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
<function>is_numeric</function>.
</para>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>value</parameter></term>
<listitem>
<para>
The variable being evaluated.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns &true; if <parameter>value</parameter> is a <type>float</type>,
&false; otherwise.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>is_float</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
var_dump(is_float(27.25));
var_dump(is_float('abc'));
var_dump(is_float(23));
var_dump(is_float(23.5));
var_dump(is_float(1e7)); //Scientific Notation
var_dump(is_float(true));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
bool(true)
bool(false)
bool(false)
bool(true)
bool(true)
bool(false)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>is_bool</function></member>
<member><function>is_int</function></member>
<member><function>is_numeric</function></member>
<member><function>is_string</function></member>
<member><function>is_array</function></member>
<member><function>is_object</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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