PDO::getAttribute
(no version information, might be only in CVS)
PDO::getAttribute --
Retrieve a database connection attribute
说明
mixed
PDO::getAttribute ( long attribute )
| 警告 |
本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随
PHP 以后的发布而改变。使用本函数风险自担。 |
This function returns the value of a database connection attribute. To
retrieve PDOStatement attributes, refer to
PDOStatement::getAttribute().
Note that some databases may not support all of the database connection
attributes.
参数
- 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_ERRMODE |
| PDO_ATTR_ORACLE_NULLS |
| PDO_ATTR_PERSISTENT |
| PDO_ATTR_PREFETCH |
| PDO_ATTR_SERVER_INFO |
| PDO_ATTR_SERVER_VERSION |
| PDO_ATTR_TIMEOUT |
返回值
A successful call returns the value of the requested PDO attribute.
An unsuccessful call returns null.
例
例子 1. Retrieving database connection attributes
<?php
$conn = new PDO('odbc:sample', 'db2inst1', 'ibmdb2');
print "\nPDO_ATTR_AUTOCOMMIT: ";
print $conn->getAttribute(PDO_ATTR_AUTOCOMMIT);
print "\nPDO_ATTR_ERRMODE: ";
print $conn->getAttribute(PDO_ATTR_ERRMODE);
print "\nPDO_ATTR_CASE: ";
print $conn->getAttribute(PDO_ATTR_CASE);
print "\nPDO_ATTR_CLIENT_VERSION: ";
print $conn->getAttribute(PDO_ATTR_CLIENT_VERSION);
print "\nPDO_ATTR_CONNECTION_STATUS: ";
print $conn->getAttribute(PDO_ATTR_CONNECTION_STATUS);
print "\nPDO_ATTR_ORACLE_NULLS: ";
print $conn->getAttribute(PDO_ATTR_ORACLE_NULLS);
print "\nPDO_ATTR_PERSISTENT: ";
print $conn->getAttribute(PDO_ATTR_PERSISTENT);
print "\nPDO_ATTR_PREFETCH: ";
print $conn->getAttribute(PDO_ATTR_PREFETCH);
print "\nPDO_ATTR_SERVER_INFO: ";
print $conn->getAttribute(PDO_ATTR_SERVER_INFO);
print "\nPDO_ATTR_SERVER_VERSION: ";
print $conn->getAttribute(PDO_ATTR_SERVER_VERSION);
print "\nPDO_ATTR_TIMEOUT: ";
print $conn->getAttribute(PDO_ATTR_TIMEOUT);
?>
|
|
参见
| PDO::setAttribute() |
| PDOStatement::getAttribute() |
| PDOStatement::setAttribute() |