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pg_pconnect

PHP Manual
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pg_pconnect

(PHP 3, PHP 4, PHP 5)

pg_pconnect -- Open a persistent PostgreSQL connection

Description

resource pg_pconnect ( string connection_string [, int connect_type] )

pg_pconnect() opens a connection to a PostgreSQL database. It returns a connection resource that is needed by other PostgreSQL functions.

If a second call is made to pg_pconnect() with the same connection_string as an existing connection, the existing connection will be returned unless you pass PGSQL_CONNECT_FORCE_NEW as connect_type.

To enable persistent connection, the pgsql.allow_persistent php.ini directive must be set to "On" (which is the default). The maximum number of persistent connection can be defined with the pgsql.max_persistent php.ini directive (defaults to -1 for no limit). The total number of connections can be set with the pgsql.max_links php.ini directive.

pg_close() will not close persistent links generated by pg_pconnect().

Parameters

connection_string

The connection_string can be empty to use all default parameters, or it can contain one or more parameter settings separated by whitespace. Each parameter setting is in the form keyword = value. Spaces around the equal sign are optional. To write an empty value or a value containing spaces, surround it with single quotes, e.g., keyword = 'a value'. Single quotes and backslashes within the value must be escaped with a backslash, i.e., \' and \\.

The currently recognized parameter keywords are: host, hostaddr, port, dbname, user, password, connect_timeout, options, tty (ignored), sslmode, requiressl (deprecated in favor of sslmode), and service. Which of these arguments exist depends on your PostgreSQL version.

connect_type

If PGSQL_CONNECT_FORCE_NEW is passed, then a new connection is created, even if the connection_string is identical to an existing connection.

Return Values

PostgreSQL connection resource on success, FALSE on failure.

Examples

Example 1. Using pg_pconnect()


<?php
$dbconn = pg_pconnect("dbname=mary");
//connect to a database named "mary"

$dbconn2 = pg_pconnect("host=localhost port=5432 dbname=mary");
// connect to a database named "mary" on "localhost" at port "5432"

$dbconn3 = pg_pconnect("host=sheep port=5432 dbname=mary user=lamb password=foo");
//connect to a database named "mary" on the host "sheep" with a username and password

$conn_string = "host=sheep port=5432 dbname=test user=lamb password=bar";
$dbconn4 = pg_pconnect($conn_string);
//connect to a database named "test" on the host "sheep" with a username and password
?>

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server

Alden Hosting offers private JVM (Java Virtual Machine), Java Server Pages (JSP), Servlets, and Servlets Manager with our Web Hosting Plans WEB 4 PLAN and WEB 5 PLAN , WEB 6 PLAN .

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER, Private JVM (Java Virtual Machine), Private Tomcat Server

pg_pconnect

Description

Parameters

Return Values

Examples

See Also

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER, Private JVM (Java Virtual Machine), Private Tomcat Server

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server