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    odbc_pconnect

    (PHP 4, PHP 5, PHP 7, PHP 8)

    odbc_pconnect — Abrir una conexión persistente a una base de datos

    Descripción

    odbc_pconnect(
        string $dsn,
        string $user,
        string $password,
        int $cursor_type = ?
    ): resource

    Abre una conexión persistente a una base de datos.

    Esta función es como odbc_connect(), excepto que la conexión no se cierra en realidad cuando el script finaliza. Futuras consultas para una conexión con la misma combinación de dsn, user, password (mediante odbc_connect() y odbc_pconnect()) pueden reusar la conexión persistente.

    Parámetros

    Véase odbc_connect() para más detalles.

    Valores devueltos

    Devuelve un identificador de conexión ODBCo 0 (false) si se produjo un error.

    Notas

    Nota: Las conexiones persistentes no tienen efecto si PHP se usa como programa CGI.

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    User Contributed Notes 3 notes

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    2
    etsai at email dot com
    24 years ago
    The following constants are defined for cursortype:
    - SQL_CUR_USE_IF_NEEDED
    - SQL_CUR_USE_ODBC
    - SQL_CUR_USE_DRIVER
    - SQL_CUR_DEFAULT

    With some ODBC drivers, executing a complex stored procedure may fail with an error similar to: "Cannot open a cursor on a stored procedure that has anything other than a single select statement in it". Using SQL_CUR_USE_ODBC may avoid that error. Also, some drivers don't support the optional row_number parameter in odbc_fetch_row(). SQL_CUR_USE_ODBC might help in that case, too.
    up
    0
    wls at wwco dot com
    24 years ago
    I found that using odbc_close($odbchandle) on a connection opened by odbc_pconnect() causes a warning "not a valid ODBC-Link resource". So you can't just change odbc_connect() to odbc_pconnect() and expect things to work without warning messages. However, you can use odbc_close_all() and not get a warning.
    up
    -4
    j_schrab at execpc dot com
    23 years ago
    Ok, learning time. As I was told by the PHP-DevTeam...


    Multiple connections are supported, but when you try to connect with exactly the same parameters, an existing
    connection will be reused, leading to the behaviour you see.

    You can simply omit the calls to odbc_close() since
    connections get closed on script termination anyway or better:
    Consider making your connection id a global variable or pass
    it to your functions.
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