<HTML ><HEAD ><TITLE >mysql_insert_id</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_info" HREF="function.mysql-info.html"><LINK REL="NEXT" TITLE="mysql_list_dbs" HREF="function.mysql-list-dbs.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-info.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-list-dbs.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mysql-insert-id" ></A >mysql_insert_id</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN59102" ></A ><P > (PHP 3, PHP 4 )</P >mysql_insert_id -- Get the ID generated from the previous INSERT operation </DIV ><DIV CLASS="refsect1" ><A NAME="AEN59105" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >mysql_insert_id</B > ( [resource link_identifier])<BR ></BR ><P > <B CLASS="function" >mysql_insert_id()</B > returns the ID generated for an AUTO_INCREMENT column by the previous INSERT query using the given <TT CLASS="parameter" ><I >link_identifier</I ></TT >. If <TT CLASS="parameter" ><I >link_identifier</I ></TT > isn't specified, the last opened link is assumed. </P ><P > <B CLASS="function" >mysql_insert_id()</B > returns 0 if the previous query does not generate an AUTO_INCREMENT value. If you need to save the value for later, be sure to call <B CLASS="function" >mysql_insert_id()</B > immediately after the query that generates the value. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > The value of the MySQL SQL function <TT CLASS="literal" >LAST_INSERT_ID()</TT > always contains the most recently generated AUTO_INCREMENT value, and is not reset between queries. </P ></BLOCKQUOTE ></DIV ><DIV CLASS="warning" ><P ></P ><TABLE CLASS="warning" BORDER="1" WIDTH="100%" ><TR ><TD ALIGN="CENTER" ><B >Warning</B ></TD ></TR ><TR ><TD ALIGN="LEFT" ><P > <B CLASS="function" >mysql_insert_id()</B > converts the return type of the native MySQL C API function <TT CLASS="literal" >mysql_insert_id()</TT > to a type of <TT CLASS="literal" >long</TT > (named <A HREF="language.types.integer.html" ><B CLASS="type" >int</B ></A > in PHP). If your AUTO_INCREMENT column has a column type of BIGINT, the value returned by <B CLASS="function" >mysql_insert_id()</B > will be incorrect. Instead, use the internal MySQL SQL function <TT CLASS="literal" >LAST_INSERT_ID()</TT > in an SQL query. </P ></TD ></TR ></TABLE ></DIV ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN59131" ></A ><P ><B >Example 1. mysql_insert_id Example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" ><?php mysql_connect("localhost", "mysql_user", "mysql_password") or die("Could not connect: " . mysql_error()); mysql_select_db("mydb"); mysql_query("INSERT INTO mytable (product) values ('kossu')"); printf ("Last inserted record has id %d\n", mysql_insert_id()); ?></PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><P > See also: <A HREF="function.mysql-query.html" ><B CLASS="function" >mysql_query()</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-info.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-list-dbs.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mysql_info</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_list_dbs</TD ></TR ></TABLE ></DIV ></BODY ></HTML >