Description:
------------
When open_basedir is set (to whatever, / for exemple), we've can't send a "LOAD DATA LOCAL INFILE" sql command and got this error :

SQLSTATE[42000]: Syntax error or access violation: 1148 The used command is not allowed with this MySQL version

If the open_basedir directive is not set, the command works fine.

If we can't use open_basedir directive with this sql command (for security reasons), please update documentation.

Test script:
---------------
try {
	$pdo = new \PDO('mysql:host=127.0.0.1;dbname=test','test','test', array(
	        \PDO::MYSQL_ATTR_LOCAL_INFILE => true,
	        \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION
	));
	$pdo->query("LOAD DATA LOCAL INFILE '/tmp/test.csv' INTO TABLE test_table");
} catch(Exception $e) {
        echo $e->getMessage()."\n";
}


Actual result:
--------------
SQLSTATE[42000]: Syntax error or access violation: 1148 The used command is not allowed with this MySQL version