Question

我有以下PDO：

// Connect to PDO / $this->link = PDO
$this->statement = $this->link->prepare("
    SELECT p.*, pm.*
      FROM dev_permissions p, dev_permissions_menu pm
     WHERE pm.id = p.permission_menu_id
       AND pm.module = 'account'
       AND pm.controller IN('login', '*')
       AND pm.action IN('index', '*')
");
// Execute and verify number of rows

哪个有效，从$this->statement->rowCount()返回一行。

但是，尝试绑定params并不能按预期工作：

// Connect to PDO / $this->link = PDO
$this->statement = $this->link->prepare("
    SELECT p.*, pm.*
      FROM dev_permissions p, dev_permissions_menu pm
     WHERE pm.id = p.permission_menu_id
       AND pm.module = :module
       AND pm.controller IN(:controller, '*')
       AND pm.action IN(:action, '*')
",

$this->statement->bindParam(':module', 'account', PDO::PARAM_STR);
$this->statement->bindParam(':controller', 'login', PDO::PARAM_STR);
$this->statement->bindParam(':action', 'index', PDO::PARAM_STR);
// Execute and verify number of rows

谢谢！

更新

将PDO::FETCH_ASSOC更改为PDO::PARAM_STR因为CTRL + C / CTRL + V发布，#__反映正确的数据库前缀。

使用以下代码进行测试：

$pdo = new \PDO('mysql:dbname=database;host=localhost', 'user', 'password');
$statement = $pdo->prepare("
    SELECT p.*, pm.*
      FROM dev_permissions p, dev_permissions_menu pm
     WHERE pm.id = p.permission_menu_id
       AND pm.module = :module
       AND pm.controller IN(:controller, '*')
       AND pm.action IN(:action, '*')
");
$statement->bindParam(':module', $request['module'], \PDO::PARAM_STR);
$statement->bindParam(':controller', $request['controller'], \PDO::PARAM_STR);
$statement->bindParam(':action', $request['action'], \PDO::PARAM_STR);
$statement->execute();

new \Core\Debug($statement->fetchAll());

一切正常。我用其他方式找不到问题..

Answer 1

变量名在您的示例中有点令人困惑... prepare是PDO对象的一种方法，它返回一个PDOStatement对象...尝试：

$sth = $this->statement->prepare("
    SELECT p.*, pm.*
      FROM #__permissions p, #__permissions_menu pm
    WHERE pm.id = p.permission_menu_id
     AND pm.module = :module
     AND pm.controller IN(:controller, '*')
     AND pm.action IN(:action, '*')
",

$sth->bindParam(':module', 'account', PDO::PARAM_STR);
$sth->bindParam(':controller', 'login', PDO::PARAM_STR);
$sth->bindParam(':action', 'index', PDO::PARAM_STR);

//execute the prepared statement
$sth->execute();

作为备注... rowCount在select语句中不会向您发出查询...它会使用与您选择的信息相同的信息执行COUNT(*)查询。 ..见http://www.php.net/manual/en/pdostatement.rowcount.php

的示例＃2

PDO无法按预期工作

1 个答案: