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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 330626 $ -->
<refentry xml:id="function.cubrid-prepare" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>cubrid_prepare</refname>
<refpurpose>Prepare a SQL statement for execution</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>resource</type><methodname>cubrid_prepare</methodname>
<methodparam><type>resource</type><parameter>conn_identifier</parameter></methodparam>
<methodparam><type>string</type><parameter>prepare_stmt</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>option</parameter><initializer>0</initializer></methodparam>
</methodsynopsis>
<para>
The <function>cubrid_prepare</function> function is a sort of API which represents SQL statements
compiled previously to a given connection handle. This pre-compiled SQL statement will be included
in the <function>cubrid_prepare</function>.
</para>
<para>
Accordingly, you can use this statement effectively to execute several times repeatedly or to
process long data. Only a single statement can be used and a parameter may put a question mark (?)
to appropriate area in the SQL statement. Add a parameter when you bind a value in the VALUES
clause of INSERT statement or in the WHERE clause. Note that it is allowed to bind a value to a
MARK(?) by using the <function>cubrid_bind</function> function only.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>conn_identifier</parameter></term>
<listitem><para>Connection identifier.</para></listitem>
</varlistentry>
<varlistentry>
<term><parameter>prepare_stmt</parameter></term>
<listitem><para>Prepare query.</para></listitem>
</varlistentry>
<varlistentry>
<term><parameter>option</parameter></term>
<listitem><para>OID return option CUBRID_INCLUDE_OID.</para></listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Request identifier, if process is successful;
</para>
<para>
&false;, if process is unsuccessful.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>cubrid_prepare</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$conn = cubrid_connect("localhost", 33000, "demodb");
$sql = <<<EOD
SELECT g.event_code, e.name
FROM game g
JOIN event e ON g.event_code=e.code
WHERE host_year = ? AND event_code NOT IN (SELECT event_code FROM game WHERE host_year=?) GROUP BY event_code;
EOD;
$req = cubrid_prepare($conn, $sql);
cubrid_bind($req, 1, 2004);
cubrid_bind($req, 2, 2000);
cubrid_execute($req);
$row_num = cubrid_num_rows($req);
printf("There are %d event that exits in 2004 olympic but not in 2000. For example:\n\n", $row_num);
printf("%-15s %s\n", "Event_code", "Event_name");
printf("----------------------------\n");
$row = cubrid_fetch_assoc($req);
printf("%-15d %s\n", $row["event_code"], $row["name"]);
$row = cubrid_fetch_assoc($req);
printf("%-15d %s\n", $row["event_code"], $row["name"]);
cubrid_disconnect($conn);
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
There are 27 event that exits in 2004 olympic but not in 2000. For example:
Event_code Event_name
----------------------------
20063 +91kg
20070 64kg
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>cubrid_execute</function></member>
<member><function>cubrid_bind</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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