mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-19 18:38:55 +00:00
a1496cecfe
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@245390 c90b9560-bf6c-de11-be94-00142212c4b1
374 lines
9.8 KiB
XML
374 lines
9.8 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.10 $ -->
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<!-- Generated by xml_proto.php v2.2. Found in /scripts directory of phpdoc. -->
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<refentry xml:id="function.db2-execute" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>db2_execute</refname>
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<refpurpose>
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Executes a prepared SQL statement
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</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>db2_execute</methodname>
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<methodparam><type>resource</type><parameter>stmt</parameter></methodparam>
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<methodparam choice="opt"><type>array</type><parameter>parameters</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>db2_execute</function> executes an SQL statement that was
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prepared by <function>db2_prepare</function>.
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</para>
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<para>
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If the SQL statement returns a result set, for example, a SELECT statement
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or a CALL to a stored procedure that returns one or more result sets, you
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can retrieve a row as an array from the <literal>stmt</literal> resource
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using <function>db2_fetch_assoc</function>,
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<function>db2_fetch_both</function>, or
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<function>db2_fetch_array</function>. Alternatively, you can use
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<function>db2_fetch_row</function> to move the result set pointer to the
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next row and fetch a column at a time from that row with
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<function>db2_result</function>.
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</para>
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<para>
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Refer to <function>db2_prepare</function> for a brief discussion of the
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advantages of using <function>db2_prepare</function> and
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<function>db2_execute</function> rather than <function>db2_exec</function>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>stmt</parameter></term>
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<listitem>
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<para>
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A prepared statement returned from <function>db2_prepare</function>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>parameters</parameter></term>
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<listitem>
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<para>
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An array of input parameters matching any parameter markers contained
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in the prepared statement.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&return.success;
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Preparing and executing an SQL statement with parameter markers</title>
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<para>
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The following example prepares an INSERT statement that accepts four
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parameter markers, then iterates over an array of arrays containing the
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input values to be passed to <function>db2_execute</function>.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$pet = array(0, 'cat', 'Pook', 3.2);
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$insert = 'INSERT INTO animals (id, breed, name, weight)
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VALUES (?, ?, ?, ?)';
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$stmt = db2_prepare($conn, $insert);
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if ($stmt) {
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$result = db2_execute($stmt, $pet);
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if ($result) {
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print "Successfully added new pet.";
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}
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}
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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Successfully added new pet.
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]]>
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</screen>
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</example>
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<example>
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<title>Calling a stored procedure with an OUT parameter</title>
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<para>
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The following example prepares a CALL statement that accepts one
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parameter marker representing an OUT parameter, binds the PHP variable
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<literal>$my_pets</literal> to the parameter using
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<function>db2_bind_param</function>, then issues
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<function>db2_execute</function> to execute the CALL statement. After the
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CALL to the stored procedure has been made, the value of
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<literal>$num_pets</literal> changes to reflect the value returned by the
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stored procedure for that OUT parameter.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$num_pets = 0;
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$res = db2_prepare($conn, "CALL count_my_pets(?)");
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$rc = db2_bind_param($res, 1, "num_pets", DB2_PARAM_OUT);
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$rc = db2_execute($res);
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print "I have $num_pets pets!";
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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I have 7 pets!
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]]>
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</screen>
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</example>
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<example>
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<title>Returning XML data as a SQL ResultSet</title>
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<para>
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The following example demonstrates how to work with documents stored
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in a XML column using the SAMPLE database. Using some pretty simple
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SQL/XML, this example returns some of the nodes in a XML document in
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a SQL ResultSet format that most users are familiar with.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect("SAMPLE", "db2inst1", "ibmdb2");
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$query = 'SELECT * FROM XMLTABLE(
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XMLNAMESPACES (DEFAULT \'http://posample.org\'),
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\'db2-fn:xmlcolumn("CUSTOMER.INFO")/customerinfo\'
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COLUMNS
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"CID" VARCHAR (50) PATH \'@Cid\',
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"NAME" VARCHAR (50) PATH \'name\',
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"PHONE" VARCHAR (50) PATH \'phone [ @type = "work"]\'
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) AS T
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WHERE NAME = ?
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';
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$stmt = db2_prepare($conn, $query);
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$name = 'Kathy Smith';
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if ($stmt) {
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db2_bind_param($stmt, 1, "name", DB2_PARAM_IN);
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db2_execute($stmt);
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while($row = db2_fetch_object($stmt)){
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printf("$row->CID $row->NAME $row->PHONE\n");
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}
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}
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db2_close($conn);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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1000 Kathy Smith 416-555-1358
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1001 Kathy Smith 905-555-7258
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]]>
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</screen>
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</example>
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<example>
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<title>Performing a "JOIN" with XML data</title>
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<para>
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The following example works with documents stored in 2 different
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XML columns in the SAMPLE database. It creates 2 temporary
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tables from the XML documents from 2 different columns and
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returns a SQL ResultSet with information regarding shipping
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status for the customer.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect("SAMPLE", "db2inst1", "ibmdb2");
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$query = '
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SELECT A.CID, A.NAME, A.PHONE, C.PONUM, C.STATUS
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FROM
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XMLTABLE(
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XMLNAMESPACES (DEFAULT \'http://posample.org\'),
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\'db2-fn:xmlcolumn("CUSTOMER.INFO")/customerinfo\'
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COLUMNS
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"CID" BIGINT PATH \'@Cid\',
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"NAME" VARCHAR (50) PATH \'name\',
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"PHONE" VARCHAR (50) PATH \'phone [ @type = "work"]\'
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) as A,
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PURCHASEORDER AS B,
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XMLTABLE (
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XMLNAMESPACES (DEFAULT \'http://posample.org\'),
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\'db2-fn:xmlcolumn("PURCHASEORDER.PORDER")/PurchaseOrder\'
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COLUMNS
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"PONUM" BIGINT PATH \'@PoNum\',
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"STATUS" VARCHAR (50) PATH \'@Status\'
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) as C
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WHERE A.CID = B.CUSTID AND
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B.POID = C.PONUM AND
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A.NAME = ?
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';
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$stmt = db2_prepare($conn, $query);
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$name = 'Kathy Smith';
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if ($stmt) {
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db2_bind_param($stmt, 1, "name", DB2_PARAM_IN);
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db2_execute($stmt);
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while($row = db2_fetch_object($stmt)){
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printf("$row->CID $row->NAME $row->PHONE $row->PONUM $row->STATUS\n");
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}
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}
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db2_close($conn);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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1001 Kathy Smith 905-555-7258 5002 Shipped
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]]>
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</screen>
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</example>
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<example>
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<title>Returning SQL data as part of a larger XML document</title>
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<para>
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The following example works with a portion of the PRODUCT.DESCRIPTION
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documents in the SAMPLE database. It creates a XML document containing
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product description (XML data) and pricing info (SQL data).
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect("SAMPLE", "db2inst1", "ibmdb2");
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$query = '
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SELECT
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XMLSERIALIZE(
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XMLQUERY(\'
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declare boundary-space strip;
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declare default element namespace "http://posample.org";
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<promoList> {
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for $prod in $doc/product
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where $prod/description/price < 10.00
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order by $prod/description/price ascending
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return(
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<promoitem> {
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$prod,
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<startdate> {$start} </startdate>,
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<enddate> {$end} </enddate>,
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<promoprice> {$promo} </promoprice>
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} </promoitem>
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)
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} </promoList>
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\' passing by ref DESCRIPTION AS "doc",
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PROMOSTART as "start",
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PROMOEND as "end",
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PROMOPRICE as "promo"
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RETURNING SEQUENCE)
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AS CLOB (32000))
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AS NEW_PRODUCT_INFO
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FROM PRODUCT
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WHERE PID = ?
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';
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$stmt = db2_prepare($conn, $query);
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$pid = "100-100-01";
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if ($stmt) {
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db2_bind_param($stmt, 1, "pid", DB2_PARAM_IN);
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db2_execute($stmt);
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while($row = db2_fetch_array($stmt)){
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printf("$row[0]\n");
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}
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}
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db2_close($conn);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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<promoList xmlns="http://posample.org">
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<promoitem>
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<product pid="100-100-01">
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<description>
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<name>Snow Shovel, Basic 22 inch</name>
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<details>Basic Snow Shovel, 22 inches wide, straight handle with D-Grip</details>
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<price>9.99</price>
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<weight>1 kg</weight>
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</description>
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</product>
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<startdate>2004-11-19</startdate>
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<enddate>2004-12-19</enddate>
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<promoprice>7.25</promoprice>
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</promoitem>
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</promoList>
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>db2_exec</function></member>
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<member><function>db2_fetch_array</function></member>
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<member><function>db2_fetch_assoc</function></member>
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<member><function>db2_fetch_both</function></member>
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<member><function>db2_fetch_row</function></member>
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<member><function>db2_prepare</function></member>
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<member><function>db2_result</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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