PDO 语句和读取结果。基本

Question

我通过 PDO 语句得到了这个函数，但我做错了什么:( 而且我也知道什么....

这是 : foreach ($result as $row); 这就是为什么我无法阅读：if($row['active'] === 'yes')

但是在 google 和堆栈上的我的搜索中我找不到写答案。有人能看出正确的方法是什么吗？？？？我对 PDO 还是有点陌生:)

thnx 进阶。

include ('../../redir/mapping.php'); 
include ($dot2.$RMredir.$RFUserR);

$dbh = new PDO("mysql:host=".$Rhost.";dbname=".$RDB, $RDBsqlR, $RDBpassR);
$stmt = $dbh->prepare("SELECT * FROM `users` WHERE `email`=:email");
$stmt->bindParam(':email', $email,PDO::PARAM_STR);
$stmt->execute();

foreach ($result as $row);

if($stmt->rowCount() === 0)
{
    $emailcheck = 'not_here';
}
else if($stmt->rowCount() === 1)
{
    if($row['active'] === 'yes')
    {
        $emailcheck = 'here_and_active';
    }
    else if($row['active'] === 'no')
    {
        $emailcheck = 'here_and_not_active';
    }
}
else
{
    $emailcheck = 'error';
}

return $emailcheck;

Answer 1

您没有获取任何内容。在您的代码中 $result 为空：

使用fetch(PDO::FETCH_ASSOC);获取结果。尝试：

$dbh = new PDO("mysql:host=".$Rhost.";dbname=".$RDB, $RDBsqlR, $RDBpassR);
$stmt = $dbh->prepare("SELECT * FROM `users` WHERE `email`=:email");
$stmt->bindParam(':email', $email,PDO::PARAM_STR);
$stmt->execute();
$emailcheck = array();
$result = $stmt->fetch(PDO::FETCH_ASSOC);

if($stmt->rowCount() === 0){
    $emailcheck[] = 'not_here';
} 
else if($stmt->rowCount() === 1){
    foreach ($result as $row){
        if($row['active'] === 'yes'){
        $emailcheck[] = 'here_and_active';
        }
        else if($row['active'] === 'no'){
        $emailcheck[] = 'here_and_not_active';
        }
    }
}
else{
    $emailcheck[] = 'error';
}

var_dump($emailcheck);

PDO 语句和读取结果。基本

PDO statement and reading results . basics

php

mysql

pdo