PHP kézikönyv
Előző |  | Következő

# db2_set_option

(PECL)

db2_set_option -- Set options for connection or statement resources

## Leírás

bool db2_set_option ( resource resource, array options [, int type] )

Sets options for a statement resource or a connection resource. You cannot set options for result set resources.

## Paraméterek

resource

  A valid statement resource as returned from db2_prepare() or a valid connection resource as returned from db2_connect() or db2_pconnect().

options

  An associative array containing valid statement or connection options. This parameter can be used to change autocommit values, cursor types (scrollable or forward), and to specify the case of the column names (lower, upper, or natural) that will appear in a result set.

  autocommit

    Passing DB2_AUTOCOMMIT_ON turns autocommit on for the specified connection resource.

    Passing DB2_AUTOCOMMIT_OFF turns autocommit off for the specified connection resource.

  cursor

    Passing DB2_FORWARD_ONLY specifies a forward-only cursor for a statement resource. This is the default cursor type, and is supported by all database servers.

    Passing DB2_SCROLLABLE specifies a scrollable cursor for a statement resource. Scrollable cursors enable result set rows to be accessed in non-sequential order, but are only supported by IBM DB2 Universal Database databases.

  binmode

    Passing DB2_BINARY specifies that binary data will be returned as is. This is the default mode. This is the equivalent of setting ibm_db2.binmode=1 in `php.ini`.

    Passing DB2_CONVERT specifies that binary data will be converted to hexadecimal encoding, and will be returned as such. This is the equivalent of setting ibm_db2.binmode=2 in `php.ini`.

    Passing DB2_PASSTHRU specifies that binary data will be converted to `NULL`. This is the equivalent of setting ibm_db2.binmode=3 in `php.ini`.

  db2_attr_case

    Passing DB2_CASE_LOWER specifies that column names of the result set are returned in lower case.

    Passing DB2_CASE_UPPER specifies that column names of the result set are returned in upper case.

    Passing DB2_CASE_NATURAL specifies that column names of the result set are returned in natural case.

type

  An integer value that specifies the type of resource that was passed into the function. The type of resource and this value must correspond.

    Passing 1 as the value specifies that a connection resource has been passed into the function.

    Passing any integer not equal to 1 as the value specifies that a statement resource has been passed into the function.

The following table specifies which options are compatible with the available resource types:

Táblázat 1. Resource-Parameter Matrix

Key | Value | Resource Type
--- | --- | ---
|  | Connection | Statement | Result Set
autocommit | DB2_AUTOCOMMIT_ON | X | - | -
autocommit | DB2_AUTOCOMMIT_OFF | X | - | -
cursor | DB2_SCROLLABLE | X | X | -
cursor | DB2_FORWARD_ONLY | X | X | -
binmode | DB2_BINARY | X | X | -
binmode | DB2_CONVERT | X | X | -
binmode | DB2_PASSTHRU | X | X | -
db2_attr_case | DB2_CASE_LOWER | X | X | -
db2_attr_case | DB2_CASE_UPPER | X | X | -
db2_attr_case | DB2_CASE_NATURAL | X | X | -

## Visszatérési értékek

Siker esetén `TRUE` értékkel tér vissza, ellenkező esetben `FALSE` értéket ad.

## Példák

Példa 1. Setting one parameter with a connection resource

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('autocommit' => DB2_AUTOCOMMIT_ON);
/* Call the function using the correct resource, options array, and type values */
$result = db2_set_option($conn, $options, 1);
/* Check if all options could be set correctly */
if($result)
{
echo 'Options Set Successfully';
}
else
{
echo 'Could Not Set Options';
}
?>`

A fenti példa a következő kimenetet adja:

    Options Set Successfully

Példa 2. Setting multiple parameters with a connection resource

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('autocommit' => DB2_AUTOCOMMIT_OFF,
'binmode' => DB2_PASSTHRU,
'db2_attr_case' => DB2_CASE_UPPER,
'cursor' => DB2_SCROLLABLE);
/* Call the function using the correct resource, options array, and type values */
$result = db2_set_option($conn, $options, 1);
/* Check if all options could be set correctly */
if($result)
{
echo 'Options Set Successfully';
}
else
{
echo 'Could Not Set Options';
}
?>`

A fenti példa a következő kimenetet adja:

    Options Set Successfully

Példa 3. Setting multiple parameters with an invalid key

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('autocommit' => DB2_AUTOCOMMIT_OFF,
'MY_INVALID_KEY' => DB2_PASSTHRU,
'db2_attr_case' => DB2_CASE_UPPER,
'cursor' => DB2_SCROLLABLE);
/* Call the function using the correct resource, options array, and type values */
$result = db2_set_option($conn, $options, 1);
/* Check if all options could be set correctly */
if($result)
{
echo 'Options Set Successfully';
}
else
{
echo 'Could Not Set Options';
}
?>`

A fenti példa a következő kimenetet adja:

    Could Not Set Options

Példa 4. Setting multiple parameters with an invalid value

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('autocommit' => DB2_AUTOCOMMIT_OFF,
'binmode' => 'INVALID_VALUE',
'db2_attr_case' => DB2_CASE_UPPER,
'cursor' => DB2_SCROLLABLE);
/* Call the function using the correct resource, options array, and type values */
$result = db2_set_option($conn, $options, 1);
/* Check if all options could be set correctly */
if($result)
{
echo 'Options Set Successfully';
}
else
{
echo 'Could Not Set Options';
}
?>`

A fenti példa a következő kimenetet adja:

    Could Not Set Options

Példa 5. Setting multiple parameters with a connection resource and the wrong type

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('autocommit' => DB2_AUTOCOMMIT_OFF,
'binmode' => DB2_PASSTHRU,
'db2_attr_case' => DB2_CASE_UPPER,
'cursor' => DB2_SCROLLABLE);
/* Call the function using the correct resource, options array, and the wrong type value */
$result = db2_set_option($conn, $options, 2);
/* Check if all options could be set correctly */
if($result)
{
echo 'Options Set Successfully';
}
else
{
echo 'Could Not Set Options';
}
?>`

A fenti példa a következő kimenetet adja:

    Could Not Set Options

Példa 6. Setting multiple parameters with the wrong resource

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('autocommit' => DB2_AUTOCOMMIT_OFF,
'binmode' => DB2_PASSTHRU,
'db2_attr_case' => DB2_CASE_UPPER,
'cursor' => DB2_SCROLLABLE);
$stmt = db2_prepare($conn, 'SELECT * FROM EMPLOYEE');
/* Call the function using the wrong resource, and the correct options array, and type values */
$result = db2_set_option($stmt, $options, 1);
/* Check if all options could be set correctly */
if($result)
{
echo 'Options Set Successfully';
}
else
{
echo 'Could Not Set Options';
}
?>`

A fenti példa a következő kimenetet adja:

    Could Not Set Options

Példa 7. Putting it all together

`<?php
/* Database Connection Parameters */
$database = 'SAMPLE';
$hostname = 'localhost';
$port = 50000;
$protocol = 'TCPIP';
$username = 'db2inst1';
$password = 'ibmdb2';
/* Connection String */
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;";
$conn_string .= "HOSTNAME=$hostname;PORT=$port;PROTOCOL=$protocol;";
$conn_string .= "UID=$username;PWD=$password;";
/* Obtain Connection Resource */
$conn = db2_connect($conn_string, '', '');
/* Create the associative options array with valid key-value pairs */
$options = array('db2_attr_case' => DB2_CASE_LOWER,
'cursor' => DB2_SCROLLABLE);
$stmt = db2_prepare($conn, 'SELECT * FROM EMPLOYEE WHERE EMPNO = ? OR EMPNO = ?');
/* Call the function using the correct resource, options array, and type values */
$option_result = db2_set_option($stmt, $options, 2);
$result = db2_execute($stmt, array('000130', '000140'));
/* Get Row 2 before Row 1 since Scrollable Cursor */
print_r(db2_fetch_assoc($stmt, 2));
print '<br /><br />';
print_r(db2_fetch_assoc($stmt, 1));
?>`

A fenti példa a következő kimenetet adja:

    Array
    (
        [empno] => 000140
        [firstnme] => HEATHER
        [midinit] => A
        [lastname] => NICHOLLS
        [workdept] => C01
        [phoneno] => 1793
        [hiredate] => 1976-12-15
        [job] => ANALYST
        [edlevel] => 18
        [sex] => F
        [birthdate] => 1946-01-19
        [salary] => 28420.00
        [bonus] => 600.00
        [comm] => 2274.00
    )

    Array
    (
        [empno] => 000130
        [firstnme] => DELORES
        [midinit] => M
        [lastname] => QUINTANA
        [workdept] => C01
        [phoneno] => 4578
        [hiredate] => 1971-07-28
        [job] => ANALYST
        [edlevel] => 16
        [sex] => F
        [birthdate] => 1925-09-15
        [salary] => 23800.00
        [bonus] => 500.00
        [comm] => 1904.00
    )

## Lásd még

db2_connect()
db2_pconnect()
db2_exec()
db2_prepare()
db2_cursor_type()

Előző | Tartalom | Következő
db2_server_info | Fel | db2_special_columns