db2_pconnect
(PECL ibm_db2:1.0-1.6.2)
db2_pconnect —
Returns a persistent connection to a database
Description
resource db2_pconnect
( string $database
, string $username
, string $password
[, array $options
] )
Calling db2_close() on a persistent connection always
returns TRUE, but the underlying DB2 client connection remains open and
waiting to serve the next matching db2_pconnect()
request.
Parameters
-
database
-
The database alias in the DB2 client catalog.
-
username
-
The username with which you are connecting to the database.
-
password
-
The password with which you are connecting to the database.
-
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.
-
DB2_ATTR_CASE
-
Passing the DB2_CASE_NATURAL value specifies
that column names are returned in natural case.
Passing the DB2_CASE_LOWER value specifies
that column names are returned in lower case.
Passing the DB2_CASE_UPPER value specifies
that column names are returned in upper case.
-
CURSOR
-
Passing the DB2_FORWARD_ONLY value specifies a
forward-only cursor for a statement resource. This is the default
cursor type and is supported on all database servers.
Passing the DB2_SCROLLABLE value specifies a
scrollable cursor for a statement resource. This mode enables
random access to rows in a result set, but currently is supported
only by IBM DB2 Universal Database.
Return Values
Returns a connection handle resource if the connection attempt is
successful. db2_pconnect() tries to reuse an existing
connection resource that exactly matches the
database
, username
, and
password
parameters. If the connection attempt fails,
db2_pconnect() returns FALSE.
Examples
Example #1 A db2_pconnect() example
In the following example, the first call to
db2_pconnect() returns a new persistent connection
resource. The second call to db2_pconnect() returns
a persistent connection resource that simply reuses the first persistent
connection resource.
<?php
$database = 'SAMPLE';
$user = 'db2inst1';
$password = 'ibmdb2';
$pconn = db2_pconnect($database, $user, $password);
if ($pconn) {
echo "Persistent connection succeeded.";
}
else {
echo "Persistent connection failed.";
}
$pconn2 = db2_pconnect($database, $user, $password);
if ($pconn) {
echo "Second persistent connection succeeded.";
}
else {
echo "Second persistent connection failed.";
}
?>
The above example will output:
Persistent connection succeeded.
Second persistent connection succeeded.
db2_num_rows
