首先打开Dreamweaver CS5,设计两个表单,如:1.PHP,2PHP,最后把表单信息添加到数据库。
新生录入的表单页面;新建了名为1。PHP的表单,其中包括文本输入框(学号、姓名、栋、房间、床号、家庭地址、联系手机和家庭电话)、列表/菜单组件(年级、班级、专业、年、月、日)、单选按钮(性别)以及两个按钮(一个是提交submit按钮,另一个是重置reset按钮)。本页还对学号与姓名两个输入框进行了javascript判断,判断两者不能为空!
2.php:获取表单form1中的各个输入项内容,并写入数据表student中,若成功则返回“记录已经成功添加,1秒后返回继续录入新生信息……”,否则提示“添加新数据出错!
打开Dreamweaver CS5;新建文件;
输入如下代码,其中加粗的代码为JavaScript验证语句与PHP语句:
function valid_form(theForm)
{
if((theForm.stu_id.value=="")||(theForm.stu_name.value=""))
{
alert("出错原因:\n学生学号为空!\n学生姓名为空!");
theForm.stu_id.focus();
return false;
}
}
第二步: 创建表单处理文件ch14-5-1.php
创建新文件,在Dreamweaver CS3编辑区,输入如下代码:
//获取表单信息
$id=htmlspecialchars($_POST["stu_id"]);
$name=htmlspecialchars($_POST["name"]);
$class=htmlspecialchars($_POST["class"]);
$classid=htmlspecialchars($_POST["classid"]);
$major=htmlspecialchars($_POST["major"]);
$room=htmlspecialchars($_POST["building"])."栋".htmlspecialchars($_POST["room"])."房间";
$bedid=htmlspecialchars($_POST["bed"]);
$sex=htmlspecialchars($_POST["sex"]);
$birthday=trim(htmlspecialchars($_POST["year"]))."-".trim(htmlspecialchars($_POST["month"]))."-".trim(htmlspecialchars($_POST["day"]));
$address=htmlspecialchars($_POST["address"]);
$tel=htmlspecialchars($_POST["tel"]);
$tel2=htmlspecialchars($_POST["tel2"]);
//获取为空的数据时做相应的处理
if($room=="")
$room="未安排";
if($bedid=="")
$bedid="未安排";
if($address=="")
$address="暂缺";
if($tel=="")
$tel="暂缺";
if($tel2=="")
$tel2="暂缺";
//引用公用文件,连接服务器,选择数据库
require "config.inc.php";
//发送SQL请求,插入新数据
$sql="insert into $table_name(stu_id,name,classname,classid,major,room,bedid,sex,birthday,address,telephone,hometel) values('$id','$name','$class','$classid','$major','$room','$bedid','$sex','$birthday','$address','$tel','$tel2')";
//发送SQL请求
mysql_query($sql) or die("添加新数据时出错".mysql_error());
//若成功执行插入语句,则执行下列操作:1秒后刷新跳转
echo "
";echo "";
echo "";
echo "
记录已经成功添加,1秒后返回继续录入新生信息……";echo "";
?>
第三步:保存文件并调试运行
点击“文件”-“保存”,将两个文件分别保存为11.PHP,12.PHP。

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.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

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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