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具体声明: 链接

mssql_pconnect

mssql_pconnect

(PHP 4, PHP 5, PECL odbtp >= 1.1.1)

mssql_pconnectOpen persistent MS SQL connection

说明

resource mssql_pconnect ([ string $servername [, string $username [, string $password [, bool $new_link = false ]]]] )

mssql_pconnect() acts very much like mssql_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, username and password. 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 (mssql_close() will not close links established by mssql_pconnect()).

This type of links is therefore called 'persistent'.

参数

servername

The MS SQL server. It can also include a port number. e.g. hostname:port.

username

The username.

password

The password.

new_link

If a second call is made to mssql_pconnect() with the same arguments, no new link will be established, but instead, the link identifier of the already opened link will be returned. This parameter modifies this behavior and makes mssql_pconnect() always open a new link, even if mssql_pconnect() was called before with the same parameters.

返回值

Returns a positive MS SQL persistent link identifier on success, or FALSE on error.

范例

Example #1 mssql_pconnect() using the new_link parameter

<?php
// Connect to MSSQL and select the database
$link1 mssql_pconnect('MANGOSQLEXPRESS''sa''phpfi');
mssql_select_db('php'$link1);

// Create a new link
$link2 mssql_pconnect('MANGOSQLEXPRESS''sa''phpfi'true);
mssql_select_db('random'$link2);
?>


  • mssql_bind
  • mssql_close
  • mssql_connect
  • mssql_data_seek
  • mssql_execute
  • mssql_fetch_array
  • mssql_fetch_assoc
  • mssql_fetch_batch
  • mssql_fetch_field
  • mssql_fetch_object
  • mssql_fetch_row
  • mssql_field_length
  • mssql_field_name
  • mssql_field_seek
  • mssql_field_type
  • mssql_free_result
  • mssql_free_statement
  • mssql_get_last_message
  • mssql_guid_string
  • mssql_init
  • mssql_min_error_severity
  • mssql_min_message_severity
  • mssql_next_result
  • mssql_num_fields
  • mssql_num_rows
  • mssql_pconnect
  • mssql_query
  • mssql_result
  • mssql_rows_affected
  • mssql_select_db
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