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db2_connect

(PECL)

db2_connect -- Returns a connection to a database

Description

resource db2_connect ( string database, string username, string password [, array options] )

Creates a new connection to an IBM DB2 Universal Database, IBM Cloudscape, or Apache Derby database.

Parameters

database

For a cataloged connection to a database, database represents the database alias in the DB2 client catalog.

For an uncataloged connection to a database, database represents a complete connection string in the following format: DRIVER={IBM DB2 ODBC DRIVER};DATABASE=database;HOSTNAME=hostname;PORT=port;PROTOCOL=TCPIP;UID=username;PWD=password; where the parameters represent the following values:

database: The name of the database.
hostname: The hostname or IP address of the database server.
port: The TCP/IP port on which the database is listening for requests.
username: The username with which you are connecting to the database.
password: The password with which you are connecting to the database.

username

The username with which you are connecting to the database.

For uncataloged connections, you must pass a NULL value or empty string.

password

The password with which you are connecting to the database.

For uncataloged connections, you must pass a NULL value or empty string.

options

An associative array of connection options that affect the behavior of the connection, where valid array keys include:

autocommit

Passing the DB2_AUTOCOMMIT_ON value turns autocommit on for this connection handle.

Passing the DB2_AUTOCOMMIT_OFF value turns autocommit off for this connection handle.

Return Values

Returns a connection handle resource if the connection attempt is successful. If the connection attempt fails, db2_connect() returns FALSE.

Examples

Example 1. Creating a cataloged connection

Cataloged connections require you to have previously cataloged the target database through the DB2 Command Line Processor (CLP) or DB2 Configuration Assistant.


<?php
$database = 'SAMPLE';
$user = 'db2inst1';
$password = 'ibmdb2';

$conn = db2_connect($database, $user, $password);

if ($conn) {
    echo "Connection succeeded.";
    db2_close($conn);
}
else {
    echo "Connection failed.";
}
?>

The above example will output:

Connection succeeded.

Example 2. Creating an uncataloged connection

An uncataloged connection enables you to dynamically connect to a database.


<?php
$database = 'SAMPLE';
$user = 'db2inst1';
$password = 'ibmdb2';
$hostname = 'localhost';
$port = 50000;

$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;" .
  "HOSTNAME=$hostname;PORT=$port;PROTOCOL=TCPIP;UID=$user;PWD=$password;";
$conn = db2_connect($conn_string, '', '');

if ($conn) {
    echo "Connection succeeded.";
    db2_close($conn);
}
else {
    echo "Connection failed.";
}
?>

The above example will output:

Connection succeeded.

Example 3. Creating a connection with autocommit off by default

Passing an array of options to db2_connect() enables you to modify the default behavior of the connection handle.


<?php
$database = 'SAMPLE';
$user = 'db2inst1';
$password = 'ibmdb2';
$options = array('autocommit' => DB2_AUTOCOMMIT_OFF);

$conn = db2_connect($database, $user, $password, $options);

if ($conn) {
    echo "Connection succeeded.\n";
    if (db2_autocommit($conn)) {
         echo "Autocommit is on.\n";
    }
    else {
         echo "Autocommit is off.\n";
    }
    db2_close($conn);
}
else {
    echo "Connection failed.";
}
?>

The above example will output:

Connection succeeded.
Autocommit is off.

PHP Manual

db2_connect

Description

Parameters

Return Values

Examples

See Also

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