PHP 7.0.6 Released

    PDO::getAttribute

    (PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0)

    PDO::getAttribute — Retrieve a database connection attribute

    Description

    public mixed PDO::getAttribute ( int $attribute )

    This function returns the value of a database connection attribute. To retrieve PDOStatement attributes, refer to PDOStatement::getAttribute().

    Note that some database/driver combinations may not support all of the database connection attributes.

    Parameters

    attribute

    One of the PDO::ATTR_* constants. The constants that apply to database connections are as follows:

    • PDO::ATTR_AUTOCOMMIT
    • PDO::ATTR_CASE
    • PDO::ATTR_CLIENT_VERSION
    • PDO::ATTR_CONNECTION_STATUS
    • PDO::ATTR_DRIVER_NAME
    • PDO::ATTR_ERRMODE
    • PDO::ATTR_ORACLE_NULLS
    • PDO::ATTR_PERSISTENT
    • PDO::ATTR_PREFETCH
    • PDO::ATTR_SERVER_INFO
    • PDO::ATTR_SERVER_VERSION
    • PDO::ATTR_TIMEOUT

    Return Values

    A successful call returns the value of the requested PDO attribute. An unsuccessful call returns null.

    Examples

    Example #1 Retrieving database connection attributes

    <?php
    $conn     = new PDO('odbc:sample', 'db2inst1', 'ibmdb2');
    $attributes = array(
            "AUTOCOMMIT", "ERRMODE", "CASE", "CLIENT_VERSION", "CONNECTION_STATUS",
            "ORACLE_NULLS", "PERSISTENT", "PREFETCH", "SERVER_INFO", "SERVER_VERSION",
            "TIMEOUT"
    );

    foreach (    $attributes as $val) {
        echo     "PDO::ATTR_$val: ";
        echo     $conn->getAttribute(constant("PDO::ATTR_$val")) . "\n";
    }
    ?>

    See Also

    User Contributed Notes

    Robert Parham
    7 months ago
    Oracle does not have the following attributes:

    PDO::ATTR_CONNECTION_STATUS: SQLSTATE[IM001]: Driver does not support this function: driver does not support that attribute
    PDO::ATTR_PREFETCH: SQLSTATE[IM001]: Driver does not support this function: driver does not support that attribute
    PDO::ATTR_TIMEOUT: SQLSTATE[IM001]: Driver does not support this function: driver does not support that attribute

    The rest work fine.
    mfinkyr at gmail dot com
    3 months ago
    As of 30-Jan-2016, MariaDB on version "5.5.5-10.1.9-MariaDB" apparently  does not support: "PREFETCH" nor "TIMEOUT".
    peter dot hopfgartner at r3-gis dot com
    6 years ago
    The Oracle driver seems to not support PDO::getAttribute():

    ociPHP Fatal error:  Uncaught exception 'PDOException' with message 'SQLSTATE[IM001]: Driver does not support this function: driver does not support getting attributes' in ...
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