PHP bindParam多參數

Question

什麼事的傢伙（）函數，

我有以下代碼：

$selectUserQuery = 'SELECT email_address, password FROM user WHERE email_address = :email_address AND password = :password'; 
$prepSelectUser = $conn->prepare($selectUserQuery); 
/* 
* HOW DO I ADD MULTIPLE PARAMETERS TO THIS BINDPARAM() FUNCTION? 
*/ 
$prepSelectUser->bindParam(':email_address', $email, PDO::PARAM_INT); 
$prepSelectUser->execute(); 
$userResult = $prepSelectUser->fetchAll(); 
$userCount = count($userResult); 

我怎樣才能多參數添加到bindParam（）函數？

Answer 1

首先，更改

$prepSelectUser->bindParam(':email_address', $email, PDO::PARAM_INT); 

到

$prepSelectUser->bindParam(':email_address', $email, PDO::PARAM_STR); 

然後調用另一個bindParam，像

$prepSelectUser->bindParam(':password', $password, PDO::PARAM_STR); 

Answer 2

你實際上並不需要這個功能的。以及您使用的大多數其他代碼。

$sql = 'SELECT 1 FROM user WHERE email_address = ? AND password = ?'; 
$stmt = $conn->prepare($sql); 
$stmt->execute([$email, $password]); 
$userCount = $stmt->fetchColumn();