如何在php腳本后創建用戶？

Question

我想要做的是在我的腳本中添加一個用戶跟隨系統（twitter like）。

這就是db結構的樣子：

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 ;

如果我想創建我應該使用此代碼：

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

對於取消訂閱，它應該如下所示：

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

在個人資料頁面上，我有一個這樣的表單：

<?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 } ?>

我不知道的是如何鏈接所有這些代碼......

編輯：

$subscribe_status應該更改為follow或unfollow具體取決於用戶是否已經關注該用戶（通過檢查我認為的查詢）。

另外， $subscribe_text應該是Follow或Unfollow具體取決於當前登錄的用戶（ $follower ）是否已經跟隨該用戶。

有人能幫幫我嗎？

編輯2（基於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

這是一些代碼：

$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";
}

編輯：

所以，這是您正在使用的表單代碼：

<?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 } ?>

基於此，我會改變

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

至

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

然后用這個創建一個處理程序文件：

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

這是准系統......但它應該成功。 怎么樣？