# cubrid_pconnect

(PECL CUBRID >= 8.3.1)

cubrid_pconnect — Open a persistent connection to a CUBRID server

### 说明

cubrid_pconnect ( string `$host` , int `$port` , string `$dbname` [, string `$userid` [, string `$passwd` ]] ) : resource

Establishes a persistent connection to a CUBRID server.

cubrid_pconnect() acts very much like cubrid_connect() with two major differences.

First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, port, dbname and userid. If one is found, an identifier for it will be returned instead of opening a new connection.

Second, the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for future use (cubrid_close() or cubrid_disconnect() will not close links established by cubrid_pconnect()).

This type of link is therefore called 'persistent'.

### 参数

`host`

  Host name or IP address of CUBRID CAS server.

`port`

  Port number of CUBRID CAS server (BROKER_PORT configured in $CUBRID/conf/cubrid_broker.conf).

`dbname`

  Name of database.

`userid`

  User name for the database.

`passwd`

  User password.

### 返回值

Connection identifier, when process is successful.

`FALSE`, when process is unsuccessful.

### 范例

Example #1 cubrid_connect() example

    <?php
    printf("%-30s %s\n", "CUBRID PHP Version:", cubrid_version());

    printf("\n");

    $conn = cubrid_pconnect("localhost", 33000, "demodb", "dba");

    if (!$conn) {
        die('Connect Error ('. cubrid_error_code() .')' . cubrid_error_msg());
    }

    $db_params = cubrid_get_db_parameter($conn);

    while (list($param_name, $param_value) = each($db_params)) {
        printf("%-30s %s\n", $param_name, $param_value);
    }

    printf("\n");

    $server_info = cubrid_get_server_info($conn);
    $client_info = cubrid_get_client_info();

    printf("%-30s %s\n", "Server Info:", $server_info);
    printf("%-30s %s\n", "Client Info:", $client_info);

    printf("\n");

    $charset = cubrid_get_charset($conn);

    printf("%-30s %s\n", "CUBRID Charset:", $charset);

    cubrid_disconnect($conn);
    ?>

以上例程会输出：

    CUBRID PHP Version:            9.1.0.0001

    PARAM_ISOLATION_LEVEL          3
    LOCK_TIMEOUT                   -1
    MAX_STRING_LENGTH              1073741823
    PARAM_AUTO_COMMIT              1

    Server Info:                   9.1.0.0212
    Client Info:                   9.1.0

    CUBRID Charset:                iso8859-1

### 参见

- cubrid_connect() - Open a connection to a CUBRID Server
- cubrid_connect_with_url() - Establish the environment for connecting to CUBRID server
- cubrid_pconnect_with_url() - Open a persistent connection to CUBRID server
- cubrid_disconnect() - Close a database connection
- cubrid_close() - Close CUBRID connection