从SQL数据库中获取值(整数) - Fetch value (integer) from SQL Database

Fetch value (integer) from SQL Database

本文关键字：整数获取 SQL 数据库 | 更新日期: 2023-09-27

我在SQL数据库中有一个整数，我试图在php中找到该整数的值。整数是一张照片的点赞数。以下是我的查询:

$result = query("SELECT likes FROM NSPhotos WHERE IdPhoto='%s' LIMIT 1", $imageID);

如何从"$results"中获得整数值?

假设您使用MySQL，您将做如下操作:

// Establish a connection to the database
$mysqli = new mysql('host', 'user', 'pass', 'database');
$query = "SELECT likes FROM NSPhotos WHERE IdPhoto = ".$imageID." LIMIT 1";
$result= $mysqli -> query($query);
$num   = $mysqli -> num_rows;
if($num > 0){
   // Fetch the result from the database
   $row = $result -> fetch_object();
   // Print the result or you could put it in a variable for use later.
   echo 'Likes: '.$row -> likes;
   $like_count = $row -> likes;
}else{
   echo 'Photo not found.';
}