search
HomeBackend DevelopmentPHP TutorialDetailed explanation one: Example of interaction between PHP and Web pages
Detailed explanation one: Example of interaction between PHP and Web pages
coldplay.xixi
coldplay.xixi
Aug 07, 2020 pm 04:15 PM

Detailed explanation one: Example of interaction between PHP and Web pages

Preface

This note records the Web Form-related operations, Web forms are mainly used to send data to the server in web pages. For example, in daily development, you need to submit a form when submitting a registration. The form is transmitted from the client to the server. After being processed by the server, the information required by the user is transmitted back to the client, thereby realizing the interaction between PHP and Web forms.

Related learning recommendations: php programming (video)

##Form# The attributes of the ##

使用<form>元素，并在其中插入相关的表单元素，即可创建一个表单。

表单结构：

<form name="form_name" method="method" action="url" enctype="value" target="target_win">
…      //省略插入的表单元素
</form >
form tag are as follows:


##Attributes of the form tagDescriptionnameForm namemethodSet the form submission method, GET or POST methodactionCarton handles the URL of the form pageenctypeSet the encoding method of the form contenttargetSet the display method of returned information
表单（form）由表单元素组成。常用的表单元素有以下几种标记：输入域标记<input>、选择域标记<select>和<option>、Detailed explanation one: Example of interaction between PHP and Web pages<textarea>等。

输入域标记

输入域标记是表单中最常用的标记之一。常用的文本框、按钮、单选按钮、复选框等构成了一个完整的表单。
语法格式如下：

<form>
<input name="file_name" type="type_name">
</form>

参数name是指输入域的名称，参数type是指输入域的类型。在标记中一共提供了10种类型的输入区域，用户所选择使用的类型由type属性决定。

下面举几个type属性例子:

1、text

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">文本框：</td>
  <td height="25" align="left"><input name="user" type="text" value="Bill" id="user" size="20" maxlength="100"></td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行效果：

Detailed explanation one: Example of interaction between PHP and Web pages

name为文本框的名称，value是文本框的默认值，size为文本框的宽度，maxlength为文本框的最大输入字符数，可以通过id获取文本框的值。

2、password

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">密码域：</td>
  <td height="25" align="left">
  <input name="pwd" type="password" value="1234567" id="password" size="20" maxlength="100">
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

密码域，用户在该文本框中输入的字符将被替换为*显示，以起到保密作用。

3、file

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">文件域：</td>
  <td height="25" align="left">
  <input name="file" type="file" enctype="multipart/form-data" id="upfile" size="20" maxlength="200">
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

文件域，当文件上传时，可以用来打开一个模式窗口来选择文件。然后将文件通过表单上传到服务器，上传文件时需要指明表单的属性enctype=”multipart/form-data”才可以实现上传功能。

4、image

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">图像域：</td>
  <td height="25" align="left">
  <input name="image" type="image" src="btn__details_praise_selected.png" id="img" width="40" height="40" border="0">
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行效果：

Detailed explanation one: Example of interaction between PHP and Web pages

图像域是指可以用在提交按钮位置上的图片，这副图片具有按钮的功能

5、radio

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">单选按钮：</td>
  <td height="25" align="left">
    <input name="sex" type="radio" value="1" checked>男
    <input name="sex" type="radio" value="0" >女
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

单选按钮，用于设置一组选择项，用户只能选择一项。checked属性用来设置该单选按钮默认被选中。

6、checkbox

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">复选框：</td>
  <td height="25" align="left">
    <input name="checkbox" type="checkbox" value="1" checked>苹果
    <input name="checkbox" type="checkbox" value="1" checked>小米
    <input name="checkbox" type="checkbox" value="1" >三星
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

复选框，允许用户选择多个选择项。checked属性用来设置该复选框默认被选中。

7、submit

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">提交按钮：</td>
  <td height="25" align="left">
    <input name="submit" type="submit" value="提交">
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

将表单的内容提交到服务器端

8、reset

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">重置按钮：</td>
  <td height="25" align="left">
    <input name="reset" type="reset" value="重置">
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

清除与重置表单内容，用于清除表单中所有文本框的内容，并使选择菜单项恢复到初始值。

9、button

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">普通按钮：</td>
  <td height="25" align="left">
    <input name="button" type="button" value="注册">
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

按钮可以激发提交表单的动作，可以在用户需要修改表单时，将表单恢复到初始的状态，还可以依照程序的需要发挥其他作用。

10、hidden

<input type="hidden" name="信息">

隐藏域，用于在表单中以隐含方式提交变量值。隐藏域在页面中对于用户是不可见的，添加隐藏域的目的在于通过隐藏的方式收集或者发送信息。



选择域标记

通过选择域标记

语法格式如下：

<select name="name" size="value" multiple>
<option value="value" selected>选项1</option>
<option value="value">选项2</option>
<option value="value">选项3</option>
…
</select>

参数name表示选择域的名称；参数size表示列表的行数；参数value表示菜单选项值；参数multiple表示以Detailed explanation one: Example of interaction between PHP and Web pages显示数据，省略则以Detailed explanation one: Example of interaction between PHP and Web pages显示数据。

1、Detailed explanation one: Example of interaction between PHP and Web pages

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">喜欢哪种编程语言：</td>
  <td height="25" align="center" >
    <select name="name" id="code">
      <option value="1" selected>Java语言</option>
      <option value="2">C语言</option>
      <option value="3">JS语言</option>
      <option value="4">PHP语言</option>
    </select>
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

下拉列表框，通过选择域标记

2、Detailed explanation one: Example of interaction between PHP and Web pages

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">喜欢哪种编程语言：</td>
  <td height="25" align="center" >
    <select name="name" id="code" multiple>
      <option value="1" selected>Java语言</option>
      <option value="2">C语言</option>
      <option value="3">JS语言</option>
      <option value="4">PHP语言</option>
    </select>
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages


> multiple属性用于菜单列表"<select>"标记中，指定该选项的用户可以使用Shift和Ctrl键进行多选

Detailed explanation one: Example of interaction between PHP and Web pages

Detailed explanation one: Example of interaction between PHP and Web pages

语法格式如下：

<textarea name="name" rows=value cols=value value="value" warp="value">
  …文本内容
</textarea>

参数name表示文字域的名称；rows表示文字域的行数；cols表示文字域的列数（这里的rows和cols以字符为单位）；value表示文字域的默认值，warp用于设定显示和送出时的换行方式，值为off表示不自动换行，值为hard表示自动硬回车换行，换行标记一同被发送到服务器，输出时也会换行，值为soft表示自动软回车换行，换行标记不会被发送到服务器，输出时仍然为一列。

例如：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
 />
<title>PHP语言基础</title>

</head>
<body>
<form action="index.php" method="post" name="form1" enctype="multipart/form-data">
 <tr bgcolor="#FFCC33">
  <td width="103" height="25" align="right">请写下你的留言：</td>
  <td height="25" align="center" >
    <textarea rows="5" cols="20" name="remark" id="remark">留言...</textarea>
  </td>
 </tr>
</form>
<?php
header("Content-Type:text/html;  charset=gb2312");
?>
</body>
</html>

运行结果：

Detailed explanation one: Example of interaction between PHP and Web pages

相关学习推荐：编程视频

The above is the detailed content of Detailed explanation one: Example of interaction between PHP and Web pages. For more information, please follow other related articles on the PHP Chinese website!

Statement
This article is reproduced at:jb51. If there is any infringement, please contact admin@php.cn delete
Related Article
Working with Flash Session Data in LaravelWorking with Flash Session Data in LaravelMar 12, 2025 pm 05:08 PM

Laravel simplifies handling temporary session data using its intuitive flash methods. This is perfect for displaying brief messages, alerts, or notifications within your application. Data persists only for the subsequent request by default: $request-

Build a React App With a Laravel Back End: Part 2, ReactBuild a React App With a Laravel Back End: Part 2, ReactMar 04, 2025 am 09:33 AM

This is the second and final part of the series on building a React application with a Laravel back-end. In the first part of the series, we created a RESTful API using Laravel for a basic product-listing application. In this tutorial, we will be dev

cURL in PHP: How to Use the PHP cURL Extension in REST APIscURL in PHP: How to Use the PHP cURL Extension in REST APIsMar 14, 2025 am 11:42 AM

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

Simplified HTTP Response Mocking in Laravel TestsSimplified HTTP Response Mocking in Laravel TestsMar 12, 2025 pm 05:09 PM

Laravel provides concise HTTP response simulation syntax, simplifying HTTP interaction testing. This approach significantly reduces code redundancy while making your test simulation more intuitive. The basic implementation provides a variety of response type shortcuts: use Illuminate\Support\Facades\Http; Http::fake([ 'google.com' => 'Hello World', 'github.com' => ['foo' => 'bar'], 'forge.laravel.com' =>

12 Best PHP Chat Scripts on CodeCanyon12 Best PHP Chat Scripts on CodeCanyonMar 13, 2025 pm 12:08 PM

Do you want to provide real-time, instant solutions to your customers' most pressing problems? Live chat lets you have real-time conversations with customers and resolve their problems instantly. It allows you to provide faster service to your custom

Notifications in LaravelNotifications in LaravelMar 04, 2025 am 09:22 AM

In this article, we're going to explore the notification system in the Laravel web framework. The notification system in Laravel allows you to send notifications to users over different channels. Today, we'll discuss how you can send notifications ov

Explain the concept of late static binding in PHP.Explain the concept of late static binding in PHP.Mar 21, 2025 pm 01:33 PM

Article discusses late static binding (LSB) in PHP, introduced in PHP 5.3, allowing runtime resolution of static method calls for more flexible inheritance.Main issue: LSB vs. traditional polymorphism; LSB's practical applications and potential perfo

PHP Logging: Best Practices for PHP Log AnalysisPHP Logging: Best Practices for PHP Log AnalysisMar 10, 2025 pm 02:32 PM

PHP logging is essential for monitoring and debugging web applications, as well as capturing critical events, errors, and runtime behavior. It provides valuable insights into system performance, helps identify issues, and supports faster troubleshoot

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Show More

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
How Long Does It Take To Beat Split Fiction?
4 weeks agoByDDD
R.E.P.O. Save File Location: Where Is It & How to Protect It?
4 weeks agoByDDD
Show More

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

Safe Exam Browser

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.

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Show More

Hot Topics

Where is the login entrance for gmail email?
7364
15
Java Tutorial
1628
14
CakePHP Tutorial
1353
52
Laravel Tutorial
1265
25
PHP Tutorial
1214
29
Show More