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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.gettype" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>gettype</refname>
<refpurpose>Get the type of a variable</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>gettype</methodname>
<methodparam><type>mixed</type><parameter>value</parameter></methodparam>
</methodsynopsis>
<para>
Returns the type of the PHP variable <parameter>value</parameter>. For
type checking, use <literal>is_*</literal> functions.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>value</parameter></term>
<listitem>
<para>
The variable being type checked.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Possible values for the returned string are:
<simplelist>
<member>
<literal>"boolean"</literal>
</member>
<member>
<literal>"integer"</literal>
</member>
<member>
<literal>"double"</literal> (for historical reasons <literal>"double"</literal> is
returned in case of a <type>float</type>, and not simply
<literal>"float"</literal>)
</member>
<member>
<literal>"string"</literal>
</member>
<member>
<literal>"array"</literal>
</member>
<member>
<literal>"object"</literal>
</member>
<member>
<literal>"resource"</literal>
</member>
<member>
<literal>"resource (closed)"</literal> as of PHP 7.2.0
</member>
<member>
<literal>"NULL"</literal>
</member>
<member>
<literal>"unknown type"</literal>
</member>
</simplelist>
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>7.2.0</entry>
<entry>
Closed resources are now reported as <literal>'resource (closed)'</literal>.
Previously the returned value for closed resources were <literal>'unknown type'</literal>.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>gettype</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$data = array(1, 1., NULL, new stdClass, 'foo');
foreach ($data as $value) {
echo gettype($value), "\n";
}
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
integer
double
NULL
object
string
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>get_debug_type</function></member>
<member><function>settype</function></member>
<member><function>get_class</function></member>
<member><function>is_array</function></member>
<member><function>is_bool</function></member>
<member><function>is_callable</function></member>
<member><function>is_float</function></member>
<member><function>is_int</function></member>
<member><function>is_null</function></member>
<member><function>is_numeric</function></member>
<member><function>is_object</function></member>
<member><function>is_resource</function></member>
<member><function>is_scalar</function></member>
<member><function>is_string</function></member>
<member><function>function_exists</function></member>
<member><function>method_exists</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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