The PDO can remain in the same phase for 20 to 30 years, while ENSO cycles typically only last 6 to 18 months. For an example showing a client-side cursor, see Cursor Types (PDO_SQLSRV Driver).The Pacific Decadal Oscillation (PDO) is a pattern of Pacific climate variability similar to ENSO in character, but which varies over a much longer time scale.
PDO MEANING HOW TO
This example shows how to use PDO::prepare with a server-side static cursor. $stmt = $conn->prepare( $query, array( PDO::ATTR_CURSOR => PDO::CURSOR_FWDONLY, PDO::SQLSRV_ATTR_QUERY_TIMEOUT => 1 ) ) $query = "insert into Table1(col1, col2) values(:col1, :col2)" prepare( $query, array( PDO::ATTR_CURSOR => PDO::CURSOR_FWDONLY, PDO::SQLSRV_ATTR_QUERY_TIMEOUT => 1 ) ) This example shows how to use PDO::prepare with parameter markers and a forward-only cursor. You can close a PDOStatement object by calling unset: unset($stmt) PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL implies PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE => PDO::SQLSRV_CURSOR_STATIC.
PDO MEANING UPDATE
A keyset cursor does not update the row count if a row is deleted from the table (a deleted row is returned with no values).Ĭreates a server-side static cursor, which lets you access rows in any order but will not reflect changes in the database. ValueĬreates a client-side (buffered) static cursor, which buffers the result set in memory on the client machine.Ĭreates a server-side (unbuffered) dynamic cursor, which lets you access rows in any order and will reflect changes in the database.Ĭreates a server-side keyset cursor. For more information about scrollable cursors, see Cursor Types (PDO_SQLSRV Driver). The following table shows the possible values for PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE. For example, pass the following array to PDO::prepare to set a dynamic cursor: array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL, PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE => PDO::SQLSRV_CURSOR_DYNAMIC)) When using PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL, you can use PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE to specify the type of cursor. For more information, see Formatting Decimal Strings and Money Values (PDO_SQLSRV Driver).įor more information, see PDO::setAttribute. If set, this option enables the PDO::SQLSRV_ATTR_DECIMAL_PLACES option for formatting money types. Specifies whether to add leading zeroes to decimal strings when appropriate. For more information, see PDO::setAttribute. Handles numeric fetches from columns with numeric SQL types. For more information, see How to: Retrieve Date and Time Types as PHP DateTime Objects Using the PDO_SQLSRV Driver. Specifies whether to retrieve date and time types as PHP DateTime objects.
For more information about PDO::SQLSRV_ATTR_DIRECT_QUERY, see Direct Statement Execution and Prepared Statement Execution in the PDO_SQLSRV Driver. False means prepared statement execution. When True, specifies direct query execution. For more information, see Formatting Decimal Strings and Money Values (PDO_SQLSRV Driver). This option works only when PDO::SQLSRV_ATTR_FORMAT_DECIMALS is true. Specifies the number of decimal places when formatting fetched money values. See below for the values this attribute can take. Only valid when PDO::ATTR_CURSOR is set to PDO::CURSOR_SCROLL. See Emulate Prepare for details and example. See Cursor Types (PDO_SQLSRV Driver) for more information about result sets and cursors in the PDO_SQLSRV driver.īy default, this attribute is false, which can be changed by this PDO::ATTR_EMULATE_PREPARES => true. When set to PDO::CURSOR_SCROLL, you can then use PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE to set the type of scrollable cursor, which is described below. PDO::CURSOR_SCROLL is a scrollable cursor.įor example, array( PDO::ATTR_CURSOR => PDO::CURSOR_FWDONLY ). The default is PDO::CURSOR_FWDONLY, a non-scrollable forward cursor. The following table lists the possible key_pair values.
PDO MEANING DRIVERS
The Microsoft Drivers for PHP for SQL Server does not evaluate prepared statements until execution. On failure, returns a PDOException object, or false depending on the value of PDO::ATTR_ERRMODE. Returns a PDOStatement object on success. See the Remarks section for more information. Key_pair: An array containing an attribute name and value. $ statement: A string containing the SQL statement.
Syntax PDOStatement PDO::prepare ( $statement )
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