Question

我遇到了$ pdo-＆gt;执行（$ values）的问题。

如果我使用$pdo->execute()而不使用$ values，它会正常工作：

$dsn = sprintf('%s:host=%s;port=%s;dbname=%s', DB_TYPE, DB_HOST, DB_PORT, DB_NAME);
$pdo = new PDO($dsn, DB_USER, DB_PASS, array());
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$sql = 'SELECT * FROM "user" ORDER BY id DESC LIMIT 50 OFFSET 0';
$stmt = $pdo->prepare(trim($sql));
$stmt->setFetchMode(PDO::FETCH_OBJ|PDO::FETCH_PROPS_LATE);
$stmt->execute();

echo "<pre>";
print_r($stmt->fetchAll());
echo "</pre>";

它工作正常，但是当我想添加值替换时：

$dsn = sprintf('%s:host=%s;port=%s;dbname=%s', DB_TYPE, DB_HOST, DB_PORT, DB_NAME);
$pdo = new PDO($dsn, DB_USER, DB_PASS, array());
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$sql = 'SELECT * FROM "user" ORDER BY ? ? LIMIT 50 OFFSET 0';
$values = array('id','DESC');

$stmt = $pdo->prepare(trim($sql));
$stmt->setFetchMode(PDO::FETCH_OBJ|PDO::FETCH_PROPS_LATE);
$stmt->execute($values);

echo "<pre>";
print_r($stmt->fetchAll());
echo "</pre>";

它不起作用。它返回：

SQLSTATE [42601]：语法错误：7错误：语法错误在“$ 2”或附近第1行：SELECT * FROM“user”ORDER BY $ 1 $ 2 LIMIT 50 OFFSET 0 ^'in ...

Answer 1

如果order by子句中有多个列，则ORDER BY需要以逗号分隔的列列表

与PDO :: execute的pgsql 42601错误

1 个答案: