Question

我要做的是在我的脚本中添加一个用户跟随系统（类似于Twitter）。

这就是db结构的样子：

CREATE TABLE IF NOT EXISTS `user_follow` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `follower` int(11) NOT NULL,
  `following` int(11) NOT NULL,
  `subscribed` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `follow_unique` (`follower`,`following`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 ;

如果我想创建我应该使用此代码：

mysql_query(" INSERT INTO `user_follow` (`follower`, `following`, `subscribed`) VALUES ('$follower', '$following', CURRENT_TIMESTAMP); ");

对于取消订阅，它应该如下所示：

mysql_query(" DELETE FROM `user_follow` WHERE `follower` = '$follower' AND `following` = '$following'; ");

$follower = $_SESSION[user_id]; // the user_id for the one who is currently logged id 
$following = $user_id; // the user_id for the user profile where the script will be on

在个人资料页面上，我有一个这样的表格：

<?php if (isset($_SESSION[user_id]) && $_SESSION[user_id] != $user_id) { ?>
<form action="" method="post">
<input name="action" type="hidden" value="<?php echo $subscribe_status; ?>"/>
<button name="subject" type="submit" value="<?php echo $subscribe_text.' '.$username; ?>"><?php echo $subscribe_text.' '.$username; ?></button>
</form>
<?php } ?>

我不知道的是如何链接所有这些代码...

编辑：

$subscribe_status应更改为follow或unfollow，具体取决于用户是否已关注该用户（通过查看我认为的查询）。

同样$subscribe_text应该是Follow或Unfollow，具体取决于当前登录的用户（$follower）是否已经关注该用户。

有人可以帮帮我吗？

EDIT 2（基于Mihir Singh的回答）

$user_follow = dbquery(" SELECT * FROM `user_follow` WHERE `follower` = '$follower' AND `following` = '$following'; ");
$check_status = dbrows($user_follow);

$sub = false; //Boolean var which states if subscribed or not

if ( $check_status !== 0 ){ //Pseudo code
    $sub = true; //If row is found, they are subscribed, so set $sub to true
}

if($sub){
     $subscribe_status = "follow";
     $subscribe_text = "Follow";
}

else{
     $subscribe_status = "unfollow";
     $subscribe_text = "Unfollow";
}

Answer 1

以下是一些代码：

$sub = false; //Boolean var which states if subscribed or not

if (row in table exists --> subscribed ){ //Pseudo code
    $sub = true; //If row is found, they are subscribed, so set $sub to true

if($sub){
     $subscribe_status = "Follow";
     $subscribe_text = "Unfollow";
}

else{
     $subscribe_status = "Unfollow";
     $subscribe_text = "Follow";
}

编辑：

因此，这是您正在使用的表单代码：

<?php if (isset($_SESSION[user_id]) && $_SESSION[user_id] != $user_id) { ?>
<form action="" method="post">
<input name="action" type="hidden" value="<?php echo $subscribe_status; ?>"/>
<button name="subject" type="submit" value="<?php echo $subscribe_text.' '.$username; ?>">       
<?php echo $subscribe_text.' '.$username; ?></button>
</form>
<?php } ?>

基于此，我会改变

<form action="" method="post">

到

<form action="handler.php" method="post">

然后使用以下命令创建一个处理程序文件：

<?
    if ($_POST['action'] == "Follow")
        //Perform Unfollow Query to Database
    else
        //Perform Follow Query to Database
?>

那是准系统......但它应该可行。怎么样？

如何在php脚本后创建用户？

1 个答案: