Php ocilogon () function

Write your php code

(PHP 3>= 3.0.4, PHP 4 , PHP 5)

ocilogon -- Establishes a connection to Oracle

Syntax

resource ocilogon ( string username, string password [, string db [, string charset]] )

ocilogon() 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.

Using Oracle server version 9.2 and greater, you can indicate charset parameter, which will be used in the new connection. If you're using Oracle server < 9.2, this parameter will be ignored and NLS_LANG environment variable will be used instead.

Connections are shared at the page level when using ocilogon(). This means that commits and rollbacks apply to all open transactions in the page, even if you have created multiple connections.

This example demonstrates how the connections are shared.

Example 1. ocilogon() example


<?php
echo "<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);
echo "</pre>";
?>

Note: This function was renamed to oci_connect() after PHP >= 5.0.0. For downward compatibility ocilogon() can also be used. This is deprecated, however.

Php ocilogon Function syntax tag

ocilogon php code on this is provided for your study purpose, it will guide you to know how create and design a website using php. use it to practice and train your self online

Php ocilogon syntax tutorial

php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.