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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.spl-autoload" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>spl_autoload</refname>
<refpurpose>Default implementation for __autoload()</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>void</type><methodname>spl_autoload</methodname>
<methodparam><type>string</type><parameter>class</parameter></methodparam>
<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>file_extensions</parameter><initializer>&null;</initializer></methodparam>
</methodsynopsis>
<para>
This function is intended to be used as a default implementation for
<function>__autoload</function>. If nothing else is specified and
<function>spl_autoload_register</function> is
called without any parameters then <function>spl_autoload</function> will be used for any
later call to <function>__autoload</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>class</parameter></term>
<listitem>
<para>
The name of the class being instantiated.
When calling the function, the name of the class with the namespace is passed to the parameter.
The <parameter>class</parameter> will not contain the leading backslash of a fully-qualified identifier.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>file_extensions</parameter></term>
<listitem>
<para>
By default it checks all <link linkend="ini.include-path">include_path</link>s to
contain filenames built up by the lowercase class name appended by the
filename extensions <literal>.inc</literal> and <literal>.php</literal>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
Throws <classname>LogicException</classname> when the class is not found
and there are no other autoloaders registered.
</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>8.0.0</entry>
<entry>
<parameter>file_extensions</parameter> is now nullable.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
</refentry>
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