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                # PDO::getAttribute PDO::getAttribute — 取回一個數據庫連接的屬性(PHP 5 &gt;= 5.1.0, PECL pdo &gt;= 0.1.0) ## 說明 ### 語法 ``` mixed PDO::getAttribute ( int $attribute ) ``` 此函數(方法)返回一個數據庫連接的屬性值。 取回 PDOStatement 屬性,請參閱 PDOStatement::getAttribute()。 注意有些數據庫/驅動可能不支持所有的數據庫連接屬性。 ### 參數說明: **attribute**: PDO::ATTR_* 常量中的一個。下列為應用到數據庫連接中的常量: * _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_ ## 返回值 成功調用則返回請求的 PDO 屬性值。不成功則返回 null。 ## 實例 ### 取回數據庫連接屬性 ``` <?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"; } ?> ```
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