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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- Generated by xml_proto.php v2.2. Found in /scripts directory of phpdoc. -->
<refentry id="function.db2-execute">
<refnamediv>
<refname>db2_execute</refname>
<refpurpose>
Executes a prepared SQL statement
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>db2_execute</methodname>
<methodparam><type>resource</type><parameter>stmt</parameter></methodparam>
<methodparam choice="opt"><type>array</type><parameter>parameters</parameter></methodparam>
</methodsynopsis>
<para>
<function>db2_execute</function> executes an SQL statement that was
prepared by <function>db2_prepare</function>.
</para>
<para>
If the SQL statement returns a result set, for example, a SELECT statement
or a CALL to a stored procedure that returns one or more result sets, you
can retrieve a row as an array from the <literal>stmt</literal> resource
using <function>db2_fetch_assoc</function>,
<function>db2_fetch_both</function>, or
<function>db2_fetch_array</function>. Alternatively, you can use
<function>db2_fetch_row</function> to move the result set pointer to the
next row and fetch a column at a time from that row with
<function>db2_result</function>.
</para>
<para>
Refer to <function>db2_prepare</function> for a brief discussion of the
advantages of using <function>db2_prepare</function> and
<function>db2_execute</function> rather than <function>db2_exec</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>stmt</parameter></term>
<listitem>
<para>
A prepared statement returned from <function>db2_prepare</function>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>parameters</parameter></term>
<listitem>
<para>
An array of input parameters matching any parameter markers contained
in the prepared statement.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Preparing and executing an SQL statement with parameter markers</title>
<para>
The following example prepares an INSERT statement that accepts four
parameter markers, then iterates over an array of arrays containing the
input values to be passed to <function>db2_execute</function>.
</para>
<programlisting role="php">
<![CDATA[
<?php
$pet = array(0, 'cat', 'Pook', 3.2);
$insert = 'INSERT INTO animals (id, breed, name, weight)
VALUES (?, ?, ?, ?)';
$stmt = db2_prepare($conn, $insert);
if ($stmt) {
$result = db2_execute($stmt, $pet);
if ($result) {
print "Successfully added new pet.";
}
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Successfully added new pet.
]]>
</screen>
</example>
<example>
<title>Calling a stored procedure with an OUT parameter</title>
<para>
The following example prepares a CALL statement that accepts one
parameter marker representing an OUT parameter, binds the PHP variable
<literal>$my_pets</literal> to the parameter using
<function>db2_bind_param</function>, then issues
<function>db2_execute</function> to execute the CALL statement. After the
CALL to the stored procedure has been made, the value of
<literal>$num_pets</literal> changes to reflect the value returned by the
stored procedure for that OUT parameter.
</para>
<programlisting role="php">
<![CDATA[
<?php
$num_pets = 0;
$res = db2_prepare($conn, "CALL count_my_pets(?)");
$rc = db2_bind_param($res, 1, "num_pets", DB2_PARAM_OUT);
$rc = db2_execute($res);
print "I have $num_pets pets!";
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
I have 7 pets!
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>db2_exec</function></member>
<member><function>db2_fetch_array</function></member>
<member><function>db2_fetch_assoc</function></member>
<member><function>db2_fetch_both</function></member>
<member><function>db2_fetch_row</function></member>
<member><function>db2_prepare</function></member>
<member><function>db2_result</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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