Question

我正在尝试使用以下编码来获取所有行。在这里，您可以看到echo $row['UserName'];和echo $row['Address'];我可以从数据库中获取所有用户名和地址。但是当我在while循环之外使用这种编码（$uname = $row['UserName'];echo $uname;和$uaddress = $row['Address'];echo $uaddress;）时，它总是获取最后一行的值。我的问题是如何获取while循环之外的所有行值？

 <?php
        include('config.php');

        try
        {
            $stmt = $conn->prepare('SELECT * FROM ebusers');
            $conn->errorInfo();
            $stmt->execute();
            while($row = $stmt->fetch()) 
            {   
                echo "<a target=_blank href='edit.php?id=". $row['UserID'] ."'>Edit</a>";
                echo "<br>";
                echo "<a target=_blank href='delete.php?id=". $row['UserID'] ."'>Delete</a>";
                echo $row['UserName'];
                $uname = $row['UserName'];
                echo "<br>";
                echo $row['Address'];
                $uaddress = $row['Address'];
                echo "<br>";
            }
        }
        catch(PDOException $e)
        {
            'Error : '.$e->getMesssage();
        }

        echo $uname;
        echo $uaddress;
    ?>

Answer 1

将它们传递给数组

while($row = $stmt->fetch()) 
            {   
                echo "<a target=_blank href='edit.php?id=". $row['UserID'] ."'>Edit</a>";
                echo "<br>";
                echo "<a target=_blank href='delete.php?id=". $row['UserID'] ."'>Delete</a>";
                echo $row['UserName'];
                $uname[] = $row['UserName']; // An array of usernames...
                echo "<br>";
                echo $row['Address'];
                $uaddress[] = $row['Address']; // An another array of addresses
                echo "<br>";
            }

//Below two statements prints all usernames and addresses
print_r($uname); // or you can access like echo $uname[2]  to view the second username
print_r($uaddress); // similarly you can do like that as you did for $uname..

//or if you want to loop through individually , you can make use of a foreach construct
foreach($uname as $usernames)
{
   echo $usernames."<br>";
}

Answer 2

在while循环期间，$row变量在每次执行时都会被覆盖。

您可以尝试FetchAll为您准备阵列。

pdo所有行都不会在循环时获取外部

2 个答案: