Question

我猜这些问题都说明了一切。我的查询结果会产生一个与该条件匹配的行。我想从每个表列中获取每个数据并放入变量。

$getinfo = "select 
                   user_firstname, 
                   user_middlename, 
                   user_lastname 
              from tempuserinfo 
             where user_email ='$ead' 
               and activation_code='$eac'";

$query = mysql_query($getinfo, $db);
if(!$query) {
    echo'something went wrong.';
} else {
    //put them into variables
    $firstname = mysql_fetch_object($query, 'user_firstname');
    $middlename = mysql_fetch_object($query, 'user_middlename');
    $lastname = mysql_fetch_object($query, 'user_lastname');
}

Answer 1

如果您获得多个结果，可以像这样循环遍历：

$getinfo = "select user_firstname, user_middlename, user_lastname from tempuserinfo where user_email ='$ead' and activation_code='$eac'";
$query = mysql_query($getinfo, $db);

while ($row = mysql_fetch_array($query)) {
    $firstname = $row['user_firstname'];
    $lastname = $row['user_lastname'];
}

如果您只返回一行（确保在SQL语句中添加LIMIT），那么您可以使用以下内容：

$getinfo = "select user_firstname, user_middlename, user_lastname from tempuserinfo where user_email ='$ead' and activation_code='$eac'";
$query = mysql_query($getinfo, $db);

$row = mysql_fetch_array($query);

$firstname = $row['user_firstname'];
$lastname = $row['user_lastname'];

Answer 2

mysql_ *函数已弃用。在文档中，建议像最新版本的PHP一样，他们将使用mysqli_ *或PDO。

以下是使用mysqli解决问题的脚本：

$mysqli = new mysqli("localhost", "root_user", "root_password", "database");
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$getinfo = "select 
                   user_firstname, 
                   user_middlename, 
                   user_lastname 
              from tempuserinfo 
             where user_email ='$ead' 
               and activation_code='$eac'";



if ($result = $mysqli->query($getinfo)) {    
     while ($row = $result->fetch_object()) {
        $firstname = $row->user_firstname;
        $middlename = $row->user_middlename;
        $lastname =$row->user_lastname;
    }
    $result->close();
}
else
{
   echo'something went wrong.';
}

Answer 3

mysqli的例子，mysql不推荐使用

$sql = "select user_firstname, user_middlename, user_lastname from tempuserinfo where user_email ='$ead' and activation_code='$eac'";

$query = mysqli_query($conn, $sql);
while($rs = mysqli_fetch_assoc($query)){
    $user_firstname = $rs['user_firstname'];
    $user_middlename = $rs['user_middlename'];
    $user_lastname = $rs['user_lastname'];
}

如果您想要拥有所有字段以便稍后查阅它们，请将它们添加到数组

$i=0;
while($rs = mysqli_fetch_assoc($query)){
    $data[$i] = array('user_firstname'=>$rs['user_firstname'], 'user_middlename'=>$rs['user_middlename'], 'user_lastname'=> $rs['user_lastname']);

    $i++;
}

print_r($data);

Answer 4

这应该有效：

$result = mysql_fetch_object($query);
$firstname = $result->user_firstname;
$middlename = $result->user_middlename;
$lastname = $result->user_lastname;

<强> BUT：使用MySQLi或PDO sintead mysql模块已经弃用

Answer 5

    $dsn = 'mysql:dbname=testdb;host=127.0.0.1';
    $user = 'dbuser';
    $password = 'dbpass';

    try {
        $dbh = new PDO($dsn, $user, $password);
    } catch (PDOException $e) {
        echo 'Connection failed: ' . $e->getMessage();
    }
    try {
      $sth = $dbh->prepare("select user_firstname, user_middlename, user_lastname from tempuserinfo where user_email = ? and activation_code=?");
      $sth->execute(array($ead,$eac));
      $row = $sth->fetch(PDO::FETCH_BOTH);
      $user_firstname = $row['user_firstname'];
      $user_middlename = $row['user_middlename'];
      $user_lastname = $row['user_lastname'];
} catch (PDOException $e) {
        echo 'Database operation failed: ' . $e->getMessage();
    }

真的，确实要学会使用PDO，因为它就像使用mysql_ *一样简单，但更安全，更好。

PHP从表行检索数据并存储到变量

5 个答案: