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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.com-load-typelib" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>com_load_typelib</refname>
<refpurpose>Loads a Typelib</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>com_load_typelib</methodname>
<methodparam><type>string</type><parameter>typelib</parameter></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>case_insensitive</parameter><initializer>&true;</initializer></methodparam>
</methodsynopsis>
<para>
Loads a type-library and registers its constants in the engine, as though
they were defined using <function>define</function>.
</para>
<para>
Note that it is much more efficient to use the <link
linkend="ini.com.typelib-file">com.typelib-file</link> &php.ini; setting to pre-load and
register the constants, although not so flexible.
</para>
<para>
If <link linkend="ini.com.autoregister-typelib">com.autoregister-typelib</link> is turned on, then
PHP will attempt to automatically register the constants associated with a
COM object when you instantiate it. This depends on the interfaces
provided by the COM object itself, and may not always be possible.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>typelib</parameter></term>
<listitem>
<para>
<parameter>typelib</parameter> can be one of the following:
<itemizedlist>
<listitem>
<para>
The filename of a <literal>.tlb</literal> file or the executable module
that contains the type library.
</para>
</listitem>
<listitem>
<para>
The type library GUID, followed by its version number, for example
<literal>{00000200-0000-0010-8000-00AA006D2EA4},2,0</literal>.
</para>
</listitem>
<listitem>
<para>
The type library name, e.g. <literal>Microsoft OLE DB ActiveX Data
Objects 1.0 Library</literal>.
</para>
</listitem>
</itemizedlist>
PHP will attempt to resolve the type library in this order, as the
process gets more and more expensive as you progress down the list;
searching for the type library by name is handled by physically
enumerating the registry until we find a match.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>case_insensitive</parameter></term>
<listitem>
<para>
The <parameter>case_insensitive</parameter> behaves inversely to
the parameter <literal>$case_insensitive</literal> in the <function>define</function>
function.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
</refentry>
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