Backend DevelopmentPHP TutorialHow to use a controller to process form data in the CodeIgniter frameworkHow to use a controller to process form data in the CodeIgniter framework
How to use a controller (Controller) to process form data in the CodeIgniter framework
CodeIgniter is a simple and powerful PHP framework that provides many useful functions to make developing web applications easier and efficient. Manipulating form data is one of the very common tasks in web development. This article will introduce how to use controllers in the CodeIgniter framework to process form data.
First, we need to create a form page. In CodeIgniter, forms can be created using HTML. The following example shows a simple form page, which contains an input box, a submit button and a hidden field:
<!DOCTYPE html>
<html>
<head>
<title>表单示例</title>
</head>
<body>
<h2 id="表单示例">表单示例</h2>
<?php echo form_open('form/process'); ?>
<label for="name">姓名：</label>
<input type="text" name="name" id="name" required><br><br>
<input type="hidden" name="hidden_field" value="隐藏字段值">
<input type="submit" value="提交">
<?php echo form_close(); ?>
</body>
</html>In this form, the form_open() function will generate a <form> element, the <code>action attribute value is form/process, which means that after the form is submitted, it will be processed by process## in the form controller # method to handle.
form controller for processing form data. In the CodeIgniter framework, the controller class needs to inherit the CI_Controller class and must be saved in the application/controllers directory. The following is a sample controller code that handles form data:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Form extends CI_Controller {
public function process() {
// 加载表单验证类
$this->load->library('form_validation');
// 设置表单验证规则
$this->form_validation->set_rules('name', '姓名', 'required');
if ($this->form_validation->run() == FALSE) {
// 表单验证失败时显示错误信息
$this->load->view('form_view');
} else {
// 表单验证成功时处理表单数据
$name = $this->input->post('name');
$hidden_field = $this->input->post('hidden_field');
// 进行数据处理或数据库操作
// 显示成功页面
$this->load->view('success_view');
}
}
}In the above controller code, we first load CodeIgniter's form validation class form_validation and set The name field is required.
$this->form_validation->run() method to perform form validation. If the form validation fails, we will reload the form page and display the error message. . If the form verification is successful, we can obtain the form data through the $this->input->post() method and perform corresponding processing or database operations. Finally, we can load a success page to display the processing results.
The above is the detailed content of How to use a controller to process form data in the CodeIgniter framework. For more information, please follow other related articles on the PHP Chinese website!
PHP in Action: Real-World Examples and ApplicationsApr 14, 2025 am 12:19 AMPHP 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: Creating Interactive Web Content with EaseApr 14, 2025 am 12:15 AMPHP 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: Comparing Two Popular Programming LanguagesApr 14, 2025 am 12:13 AMPHP 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.
The Enduring Relevance of PHP: Is It Still Alive?Apr 14, 2025 am 12:12 AMPHP 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.
PHP's Current Status: A Look at Web Development TrendsApr 13, 2025 am 12:20 AMPHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.
PHP vs. Other Languages: A ComparisonApr 13, 2025 am 12:19 AMPHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.
PHP vs. Python: Core Features and FunctionalityApr 13, 2025 am 12:16 AMPHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.
PHP: A Key Language for Web DevelopmentApr 13, 2025 am 12:08 AMPHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7
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
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.
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.
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
