需要从后台数据库取值的,在select标签遍历数据库里面的数据
<code><?php $_link=mysql_connect("localhost","root",""); mysql_query("SET NAMES UTF8"); mysql_select_db("store"); $_result= mysql_query("select goods_no,goods_name,goods_qu from stock_goods"); ?> <select> <option value="#">选择商品编号</option> <?php while(!!$_rows=mysql_fetch_array($_result,MYSQL_ASSOC)){ ?> <option value="<?php echo $_rows[goods_name]?>"> <?php echo $_rows[goods_no];?> </option> <?php } ?> </select></code>
默认的select标签只有一个
点击下面的加号后要在添加一行数据
问题来了!!!这里使用js代码定义一个字符串,然后使用JQ的append添加到节点,生成一条数据表格,可是这时候的select标签要怎么遍历数据库,把php代码写到js的字符串里面,添加进页面之后就被注释掉了,不起作用。
所以最佳的解决方法是什么?!!
所以最佳的解决方法是什么?!!
所以最佳的解决方法是什么?!!
回复内容:
需要从后台数据库取值的,在select标签遍历数据库里面的数据
<code><?php $_link=mysql_connect("localhost","root",""); mysql_query("SET NAMES UTF8"); mysql_select_db("store"); $_result= mysql_query("select goods_no,goods_name,goods_qu from stock_goods"); ?> <select> <option value="#">选择商品编号</option> <?php while(!!$_rows=mysql_fetch_array($_result,MYSQL_ASSOC)){ ?> <option value="<?php echo $_rows[goods_name]?>"> <?php echo $_rows[goods_no];?> </option> <?php } ?> </select></code>
默认的select标签只有一个
点击下面的加号后要在添加一行数据
问题来了!!!这里使用js代码定义一个字符串,然后使用JQ的append添加到节点,生成一条数据表格,可是这时候的select标签要怎么遍历数据库,把php代码写到js的字符串里面,添加进页面之后就被注释掉了,不起作用。
所以最佳的解决方法是什么?!!
所以最佳的解决方法是什么?!!
所以最佳的解决方法是什么?!!
试下我没测试
<code><?php while(!!$_rows=mysql_fetch_array($_result,MYSQL_ASSOC)){ ?> <select> <option value="#">选择商品编号</option> <option value="<?php echo $_rows[goods_name]?>"> <?php echo $_rows[goods_no];?> </option> </select><?php } ?> </code>
下面是我写的:
<code> <?php $rooms = GetDesks(); ?> <?php if($rooms):?> <form id="options"> <div class="order-info-item"> <p><?php echo $shop['deskname'];?></p> <div class="item-value"> <div class="select-outer item-value-selectposition"> <div class="select-arrow"></div> <select name="field[1][content]"> <?php $flag=true; foreach ($rooms as $k => $v) { echo '<option value="'.$v['id'].'">' . $v['title'] . '</option>' . "\n"; $flag=false; }?> </select> </div> </div> </div> </form> <?php endif?> </code>
你这写法太神奇了, js又不认识php标签, 当然不能了...
当然, 你要是把代码直接放在php文件里, 用script标签包起来也是可以的, 但是绝对不能放到js文件里去...
理想的做法是用php将数据已json的格式输出的页面, 然后js解析json,拼接代码

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

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PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

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.


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