在php文件里
//$list 是个数组 包含每条信息的数据,然后写入以下代码; foreach($list as $value){ $id=intval($value['id']);//list里面的信息ID $uid=intval($['uid']);//当前登录用户的ID $str = //查询数据库where likeid='$id' and uid='$uid';//有没有用户ID和当前信息ID //查询条件就是这样,具体代码就不写了 (⊙﹏⊙)b $like = mysql_num_rows($str); //判断出来的结果 $like大于0 表示已收藏 }//以上结果 输出 $like 能显示出 每条信息当前用户收藏情况是1还是0//代码没有错误
在html文件里
{loop $list $a}$a[id] - $a[title] -........{/loop}
问题是在html 文件里怎么判断啊?也就是说 把$like和列表的ID关联起来
//在html里面的 $list 写下如下代码 不成功
{loop $list $a}{if $like>0}已收藏{else}未收藏{/if}$a[id] - $a[title] -........{/loop}
回复讨论(解决方案)
代码3 中的 $like 是哪里来的?
既然是表示是否收藏,为何不是 $a[like]
代码3 中的 $like 是哪里来的?
既然是表示是否收藏,为何不是 $a[like]
问题就是代码3的$like的值 不等于代码1的值啊
代码3 中的 $like 是哪里来的?
既然是表示是否收藏,为何不是 $a[like]
列表list中 并不包含 like字段。
$like 是在php文件中判断的结果。
我就是想把php中的$like能引用到html的list当中
看不出 $like 是从哪里来的,而且是个单值
如果是代码1中查询出来的那个,也应该放进 $list 中去吧?
对于每个 id 和 uid 对而言,$like 都是不一样的
$like 是在哪里赋值的?
$like 是在哪里赋值的?
代码1 是php文件判断$list列表中 每个ID是否在此用户的收藏列表里;
代码2 是html模板页面,list 列表循环输出;
请无视代码3 那是错误的。。。
我就想在html页面 把当前的信息ID和代码1的$value['id'] 关联和判断
比如 代码1 输出是:
$value['id'] : 1 2 3 4 5
$like: 0 0 0 1 0 //和 $value['id']是对应关系,代表 除了ID4 其他的都没收藏
那么 我想在html 页面 判断下ID为 1 2 3 4 5 的$like 是多少 怎么做? 当然HTML页面是调用的php文件中的$list
或者大家有更高的代码 那么也可以。 辛苦了 各位
$like 是在哪里赋值的?
好像关键问题就是没有赋值啊 好像

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Zend Studio 13.0.1
Powerful PHP integrated development environment

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.