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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xml:id="function.geoip-db-avail" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>geoip_db_avail</refname>
<refpurpose>Determine if GeoIP Database is available</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>geoip_db_avail</methodname>
<methodparam><type>int</type><parameter>database</parameter></methodparam>
</methodsynopsis>
<para>
The <function>geoip_db_avail</function> function returns if the corresponding
GeoIP Database is available and can be opened on disk.
</para>
<para>
It does not indicate if the file is a proper database, only if it is readable.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>database</parameter></term>
<listitem>
<para>
The database type as an integer. You can use the
<link linkend="geoip.constants">various constants</link> defined with
this extension (ie: GEOIP_*_EDITION).
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns &true; is database exists, &false; if not found, or &null; on error.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A <function>geoip_db_avail</function> example</title>
<para>
This will output the current database version string.
</para>
<programlisting role="php">
<![CDATA[
<?php
if (geoip_db_avail(GEOIP_COUNTRY_EDITION))
print geoip_database_info(GEOIP_COUNTRY_EDITION);
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
GEO-106FREE 20080801 Build 1 Copyright (c) 2006 MaxMind LLC All Rights Reserved
]]>
</screen>
</example>
</para>
</refsect1>
</refentry>
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