# cubrid_set_db_parameter

(PECL CUBRID >= 8.4.0)

cubrid_set_db_parameter — Sets the CUBRID database parameters

### 说明

cubrid_set_db_parameter ( resource `$conn_identifier` , int `$param_type` , int `$param_value` ) : bool

The cubrid_set_db_parameter() function is used to set the CUBRID database parameters. It can set the following CUBRID database parameters:

- `PARAM_ISOLATION_LEVEL`
- `PARAM_LOCK_TIMEOUT`

> Note:

> The auto-commit mode can be set by using cubrid_set_autocommit().

### 参数

`conn_identifier`

  The CUBRID connection. If the connection identifier is not specified, the last link opened by cubrid_connect() is assumed.

`param_type`

  Database parameter type.

`param_value`

  Isolation level value (1-6) or lock timeout (in seconds) value.

### 返回值

`TRUE` on success.

`FALSE` on failure.

### 范例

Example #1 cubrid_get_db_parameter() example

    <?php
    $conn = cubrid_connect("localhost", 33000, "demodb", "dba");

    $params = cubrid_get_db_parameter($conn);
    var_dump($params);

    cubrid_set_autocommit($conn, CUBRID_AUTOCOMMIT_TRUE);
    cubrid_set_db_parameter($conn, CUBRID_PARAM_ISOLATION_LEVEL, 2);

    $params_new = cubrid_get_db_parameter($conn);
    var_dump($params_new);

    cubrid_disconnect($conn);
    ?>

以上例程会输出：

    array(4) {
      ["PARAM_ISOLATION_LEVEL"]=>
      int(3)
      ["PARAM_LOCK_TIMEOUT"]=>
      int(-1)
      ["PARAM_MAX_STRING_LENGTH"]=>
      int(1073741823)
      ["PARAM_AUTO_COMMIT"]=>
      int(0)
    }
    array(4) {
      ["PARAM_ISOLATION_LEVEL"]=>
      int(2)
      ["PARAM_LOCK_TIMEOUT"]=>
      int(-1)
      ["PARAM_MAX_STRING_LENGTH"]=>
      int(1073741823)
      ["PARAM_AUTO_COMMIT"]=>
      int(1)
    }

### 参见

- cubrid_get_db_parameter() - Returns the CUBRID database parameters
- cubrid_set_autocommit() - Set autocommit mode of the connection