<HTML ><HEAD ><TITLE >mysql_data_seek</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="MySQL Functions" HREF="ref.mysql.html"><LINK REL="PREVIOUS" TITLE="mysql_create_db" HREF="function.mysql-create-db.html"><LINK REL="NEXT" TITLE="mysql_db_name" HREF="function.mysql-db-name.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.mysql-create-db.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.mysql-db-name.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mysql-data-seek" ></A >mysql_data_seek</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN58386" ></A ><P > (PHP 3, PHP 4 )</P >mysql_data_seek -- Move internal result pointer</DIV ><DIV CLASS="refsect1" ><A NAME="AEN58389" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >mysql_data_seek</B > ( resource result_identifier, int row_number)<BR ></BR ><P > Returns <TT CLASS="constant" ><B >TRUE</B ></TT > on success or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ><P > <B CLASS="function" >mysql_data_seek()</B > moves the internal row pointer of the MySQL result associated with the specified result identifier to point to the specified row number. The next call to <A HREF="function.mysql-fetch-row.html" ><B CLASS="function" >mysql_fetch_row()</B ></A > would return that row. </P ><P > <TT CLASS="parameter" ><I >Row_number</I ></TT > starts at 0. The <TT CLASS="parameter" ><I > row_number</I ></TT > should be a value in the range from 0 to mysql_num_rows - 1. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > The function <B CLASS="function" >mysql_data_seek()</B > can be used in conjunction only with <A HREF="function.mysql-query.html" ><B CLASS="function" >mysql_query()</B ></A >, not with <A HREF="function.mysql-unbuffered-query.html" ><B CLASS="function" >mysql_unbuffered_query()</B ></A >. </P ></BLOCKQUOTE ></DIV ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN58414" ></A ><P ><B >Example 1. MySQL data seek example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" ><?php $link = mysql_pconnect("localhost", "mysql_user", "mysql_password") or die("Could not connect: " . mysql_error()); mysql_select_db("samp_db") or die("Could not select database: " . mysql_error()); $query = "SELECT last_name, first_name FROM friends"; $result = mysql_query($query) or die("Query failed: " . mysql_error()); /* fetch rows in reverse order */ for ($i = mysql_num_rows($result) - 1; $i >= 0; $i--) { if (!mysql_data_seek($result, $i)) { echo "Cannot seek to row $i: " . mysql_error() . "\n"; continue; } if(!($row = mysql_fetch_object($result))) continue; echo "$row->last_name $row->first_name<br />\n"; } mysql_free_result($result); ?></PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><P > See also: <A HREF="function.mysql-query.html" ><B CLASS="function" >mysql_query()</B ></A >, <A HREF="function.mysql-num-rows.html" ><B CLASS="function" >mysql_num_rows()</B ></A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.mysql-create-db.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.mysql-db-name.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mysql_create_db</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.mysql.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mysql_db_name</TD ></TR ></TABLE ></DIV ></BODY ></HTML >