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https://github.com/sigmasternchen/php-doc-en
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ba25e8d0b8
- marked undocumented functions for embedded server and replication as experimental git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@151917 c90b9560-bf6c-de11-be94-00142212c4b1
145 lines
4.5 KiB
XML
145 lines
4.5 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.11 $ -->
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<refentry id="function.mysqli-data-seek">
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<refnamediv>
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<refname>mysqli_data_seek</refname>
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<refname>result->data_seek</refname>
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<refpurpose>Adjusts the result pointer to an arbitary row in the result</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<para>Procedural style:</para>
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<methodsynopsis>
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<type>bool</type><methodname>mysqli_data_seek</methodname>
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<methodparam><type>object</type><parameter>result</parameter></methodparam>
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<methodparam><type>int</type><parameter>offset</parameter></methodparam>
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</methodsynopsis>
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<para>Object oriented style (method):</para>
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<classsynopsis>
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<ooclass><classname>result</classname></ooclass>
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<methodsynopsis>
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<type>bool</type>
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<methodname>data_seek</methodname>
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<methodparam><type>int</type><parameter>offset</parameter></methodparam>
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</methodsynopsis>
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</classsynopsis>
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<para>
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The <function>mysqli_data_seek</function> function seeks to an arbitrary result pointer
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specified by the <parameter>offset</parameter> in the result set represented by
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<parameter>result</parameter>. The <parameter>offset</parameter> parameter must be between
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zero and the total number of rows minus one (0..<function>mysqli_num_rows</function> - 1).
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</para>
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<note>
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<para>
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This function can only be used with unbuffered results attained from the use of the
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<function>mysqli_store_result</function> or <function>mysqli_query</function> functions.
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</para>
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</note>
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</refsect1>
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<refsect1>
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<title>Return values</title>
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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>
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<title>See also</title>
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<para>
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<function>mysqli_store_result</function>,
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<function>mysqli_fetch_row</function>,
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<function>mysqli_num_rows</function>.
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</para>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<para>
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<example>
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<title>Object oriented style</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* Open a connection */
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$mysqli = new mysqli("localhost", "my_user", "my_password", "test");
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$mysqli->query( "DROP TABLE IF EXISTS friends");
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$mysqli->query( "CREATE TABLE friends (id int, name varchar(30))");
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$mysqli->query( "INSERT INTO friends VALUES (1, 'Greant'),
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(2, 'Stocker'), (3, 'Rethans'), (4, 'Wendel')");
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/* Get some rows */
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$query = "SELECT name FROM friends ORDER BY name";
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$result = $mysqli->query( $query) or die(mysqli_error($link));
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$total = $result->field_count;
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if ($total > 0) { // there is at least one row
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/* Get the last employee */
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$result->data_seek($result->num_rows -1);
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$friend = $result->fetch_row();
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printf ("Friends name : %s\n", $friend[0]);
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}
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$result->close();
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$mysqli->close();
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?>
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]]>
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</programlisting>
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</example>
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<example>
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<title>Object oriented style</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* Open a connection */
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$link = mysqli_connect("localhost", "my_user", "my_password", "test");
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mysqli_query($link, "DROP TABLE IF EXISTS friends");
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mysqli_query($link, "CREATE TABLE friends (id int, name varchar(30))");
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mysqli_query($link, "INSERT INTO friends VALUES (1, 'Greant'),
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(2, 'Stocker'), (3, 'Rethans'), (4, 'Wendel')");
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/* Get some rows */
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$query = "SELECT name FROM friends ORDER BY name";
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$result = mysqli_query($link, $query) or die(mysqli_error($link));
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$total = mysqli_num_fields($result);
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if ($total > 0) { /* there is at least one row */
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/* Get the last employee */
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mysqli_data_seek($result, mysqli_num_rows($result) -1);
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$friend = mysqli_fetch_row($result);
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printf ("Friends name : %s\n", $friend[0]);
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}
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mysqli_free_result($result);
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mysqli_close($link);
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?>
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]]>
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</programlisting>
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</example>
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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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