<HTML ><HEAD ><TITLE >OCILogon</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="Oracle 8 functions" HREF="ref.oci8.html"><LINK REL="PREVIOUS" TITLE="OCILogOff" HREF="function.ocilogoff.html"><LINK REL="NEXT" TITLE="OCINewCollection" HREF="function.ocinewcollection.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.ocilogoff.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.ocinewcollection.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.ocilogon" ></A >OCILogon</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN67304" ></A ><P > (PHP 3>= 3.0.4, PHP 4 )</P >OCILogon -- Establishes a connection to Oracle</DIV ><DIV CLASS="refsect1" ><A NAME="AEN67307" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >OCILogon</B > ( string username, string password [, string db])<BR ></BR ><P > <B CLASS="function" >OCILogon()</B > returns an connection identifier needed for most other OCI calls. The optional third parameter can either contain the name of the local Oracle instance or the name of the entry in tnsnames.ora to which you want to connect. If the optional third parameter is not specified, PHP uses the environment variables ORACLE_SID (Oracle instance) or TWO_TASK (tnsnames.ora) to determine which database to connect to. </P ><P >Connections are shared at the page level when using <B CLASS="function" >OCILogon()</B >. This means that commits and rollbacks apply to all open transactions in the page, even if you have created multiple connections. </P ><P > This example demonstrates how the connections are shared. <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN67326" ></A ><P ><B >Example 1. OCILogon</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="programlisting" ><?php print "<HTML><PRE>"; $db = ""; $c1 = ocilogon("scott","tiger",$db); $c2 = ocilogon("scott","tiger",$db); function create_table($conn) { $stmt = ociparse($conn,"create table scott.hallo (test varchar2(64))"); ociexecute($stmt); echo $conn." created table\n\n"; } function drop_table($conn) { $stmt = ociparse($conn,"drop table scott.hallo"); ociexecute($stmt); echo $conn." dropped table\n\n"; } function insert_data($conn) { $stmt = ociparse($conn,"insert into scott.hallo values('$conn' || ' ' || to_char(sysdate,'DD-MON-YY HH24:MI:SS'))"); ociexecute($stmt,OCI_DEFAULT); echo $conn." inserted hallo\n\n"; } function delete_data($conn) { $stmt = ociparse($conn,"delete from scott.hallo"); ociexecute($stmt,OCI_DEFAULT); echo $conn." deleted hallo\n\n"; } function commit($conn) { ocicommit($conn); echo $conn." committed\n\n"; } function rollback($conn) { ocirollback($conn); echo $conn." rollback\n\n"; } function select_data($conn) { $stmt = ociparse($conn,"select * from scott.hallo"); ociexecute($stmt,OCI_DEFAULT); echo $conn."----selecting\n\n"; while (ocifetch($stmt)) echo $conn." <".ociresult($stmt,"TEST").">\n\n"; echo $conn."----done\n\n"; } create_table($c1); insert_data($c1); // Insert a row using c1 insert_data($c2); // Insert a row using c2 select_data($c1); // Results of both inserts are returned select_data($c2); rollback($c1); // Rollback using c1 select_data($c1); // Both inserts have been rolled back select_data($c2); insert_data($c2); // Insert a row using c2 commit($c2); // commit using c2 select_data($c1); // result of c2 insert is returned delete_data($c1); // delete all rows in table using c1 select_data($c1); // no rows returned select_data($c2); // no rows returned commit($c1); // commit using c1 select_data($c1); // no rows returned select_data($c2); // no rows returned drop_table($c1); print "</PRE></HTML>"; ?></PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > See also <A HREF="function.ociplogon.html" ><B CLASS="function" >OCIPLogon()</B ></A > and <A HREF="function.ocinlogon.html" ><B CLASS="function" >OCINLogon()</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.ocilogoff.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.ocinewcollection.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >OCILogOff</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.oci8.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >OCINewCollection</TD ></TR ></TABLE ></DIV ></BODY ></HTML >