thinkphp implementation of array paging example_PHP tutorial
Paging is implemented under the thinkphp framework . The company's website is based on the Thinkphp framework. I have been hearing about thinkphp for a long time and finally had the opportunity to put it into practice. thinkphp is based on MVC architecture. MVC is familiar to any ITers, model-view-controller. It handles logic and data separately, eliminating a lot of tedious processes. In fact, the official information has introduced in detail how to paginate, portal: http://document.thinkphp.cn/manual_3_2.html#data_page
, but it does not apply when the data has been taken out from the DB. And when converting to an array, I have been exposed to PHP for a full 2 months, and I have been exposed to thinkphp for only 3 weeks. I spent a lot of time on official documents to get familiar with thinkphp. It can be regarded as a worker who sharpens his sword and chops firewood. Here the official documents are explained as a comparison:
(only the first method in the document is cited): Using the Page class and the limit method, the code is as follows:
$User = M('User'); // Instantiate User object
$count= $User->where('status=1')->count();// Query the total number of records that meet the requirements
$Page = new ThinkPage($count,25);//Instantiate the paging class and pass in the total number of records and the number of records displayed on each page (25)
$show = $Page->show();// Display output in paging
// Perform paging data query. Note that the parameters of the limit method must use the attributes of the Page class
$list = $User->where('status=1')->order('create_time')->limit($Page->firstRow.','.$Page->listRows )->select();
$this->assign('list',$list);//Assign data set
$this->assign('page',$show);// Assign paging output
$this->display(); // Output template
The basic idea is to first calculate the total number of records, and then divide the pages according to the set number of records displayed on each page. It can be easily implemented using the Page class encapsulated by Thinkphp. The focus of the implementation is on line 11. The limit method extracts data from the query data according to certain rules. But what should I do if the data has been taken out?
We used the function array_slice() that comes with PHP. The definition is here: http://www.php.net/manual/en/function.array-slice.php
In fact, it is the array version of the limit method. Well, now that the tool is found, implementation is easy. Directly upload the code:
public function nodeslist(){
$portal = new PortalApi;
$nodelist = $portal->getNodeLists($this->uid);
$count = count($nodelist['data']);
$p = new Page($count, 10);
$lists = array_slice($nodelist['data'], $p->firstRow,$p->listRows);
$page = $p->show();
$this->assign('page',$page);
$this->assign('nodes',$lists);
$this->display();
}
The code has been deleted, only the implementation details are retained.
The getNodeLists method in line 3 retrieves data from the database and assigns it to the array nodelist.
Line 5 count calculates the number of array elements.
Line 6 passes in parameters to the Page class.
The array_slice function on line 7 replaces the limit method. The principle is the same.
Line 9 uses the assign method to assign a value to the template. The definition is here: http://document.thinkphp.cn/manual_3_2.html#assign
The same goes for line 10.
The following is the code in the view:
{$page}
If this is the only way, the displayed effect is not friendly. Then find out the definition of Page class:
//Page display customization
private $config= array(
'header' => 'Total %TOTAL_ROW% records',
'prev' => 'Previous page',
'next' => 'Next page',
'first'=> 'First page',
'last' => '...%TOTAL_PAGE%',
'theme'=> '%FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%',
Add spaces before and after the page number. Now you can see the effect:
It goes well with the background. Of course, you can set different effects according to your own situation.

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.