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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<!-- splitted from ./en/functions/dbm.xml, last change in rev 1.2 -->
<refentry id="function.dbmnextkey">
<refnamediv>
<refname>dbmnextkey</refname>
<refpurpose>
Retrieves the next key from a DBM database</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>dbmnextkey</methodname>
<methodparam><type>resource</type><parameter>dbm_identifier</parameter></methodparam>
<methodparam><type>string</type><parameter>key</parameter></methodparam>
</methodsynopsis>
<para>
Returns the next key after <parameter>key</parameter>. By calling
<function>dbmfirstkey</function> followed by successive
calls to <function>dbmnextkey</function> it is possible to
visit every key/value pair in the dbm database. For example:
<example>
<title>Visiting every key/value pair in a DBM database</title>
<programlisting role="php">
<![CDATA[
<?php
$key = dbmfirstkey($dbm_id);
while ($key) {
echo "$key = " . dbmfetch($dbm_id, $key) . "\n";
$key = dbmnextkey($dbm_id, $key);
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
</refentry>
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vim: et tw=78 syn=sgml
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-->
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