Backend Development
PHP Tutorial
How to improve the access speed of PHP website by reducing duplicate code?
How to improve the access speed of PHP website by reducing duplicate code?
How to improve the access speed of PHP website by reducing duplicate code?
With the rapid development of the Internet, access speed has become one of the important indicators to measure the quality of a website. For websites developed using PHP, reducing duplicate code is one of the effective ways to improve access speed. This article will introduce how to improve the access speed of PHP websites by reducing repeated code, and give corresponding code examples.
- Use functions to encapsulate duplicate code
Duplicate code is one of the main manifestations of code redundancy. By encapsulating repeated code into functions, the amount of code can be reduced and the readability and maintainability of the code can be improved. At the same time, some logical judgments can be added inside the function to make the function suitable for different scenarios. The following is an example:
function getUserInfo($userId) {
// 获取用户信息的代码
}
// 调用函数
$userInfo1 = getUserInfo(1);
$userInfo2 = getUserInfo(2);- Use include and require to introduce duplicate code
In PHP, duplicate code can be introduced into the main program through the include and require statements. In this way, the repeated code can be stored in a file and can be directly included or required when needed. The following is an example:
// common.php
function checkLogin() {
// 检查用户是否登录的代码
}
// index.php
include 'common.php';
checkLogin();
// 其他代码
// admin.php
include 'common.php';
checkLogin();
// 其他代码- Using caching technology
In PHP development, caching is an important means to improve access speed. By caching the results of repeated calculations, you can avoid repeatedly executing the same code and save computing resources. There are many caching technologies to choose from in PHP, such as using Memcached or Redis to cache database query results, and using file cache or memory cache to cache other calculation results. The following is an example:
// 查询数据库的代码
$sql = "SELECT * FROM user WHERE id = ?";
$userId = 1;
$result = $cache->get('user_' . $userId);
if (!$result) {
$stmt = $pdo->prepare($sql);
$stmt->execute([$userId]);
$result = $stmt->fetch(PDO::FETCH_ASSOC);
$cache->set('user_' . $userId, $result, 3600); // 缓存结果1小时
}- Use template engine
When developing a PHP website, using a template engine can separate the display logic and business logic of the page and reduce the occurrence of duplicate codes. Through the template engine, you can store the page layout and style and other related codes in a template file, and just include it directly when you need to use it. The following is an example:
// template.php
<html>
<head>
<title><?= $pageTitle ?></title>
</head>
<body>
<div id="header">
<?= $headerContent ?>
</div>
<div id="content">
<?= $pageContent ?>
</div>
<div id="footer">
<?= $footerContent ?>
</div>
</body>
</html>
// index.php
$pageTitle = "首页";
$headerContent = "头部内容";
$pageContent = "页面内容";
$footerContent = "底部内容";
include 'template.php';Through the above methods, we can effectively reduce duplicate codes and improve the access speed of PHP websites. Of course, in addition to reducing duplicate code, there are other optimization strategies, such as using appropriate database indexes, optimizing SQL queries, etc., which can also play a certain role in improving the access speed of the website. I hope this article will be helpful to improve the access speed of PHP website!
The above is the detailed content of How to improve the access speed of PHP website by reducing duplicate code?. For more information, please follow other related articles on the PHP Chinese website!
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1663
14
1420
52
1313
25
1266
29
1239
24
C++ program optimization: time complexity reduction techniques
Jun 01, 2024 am 11:19 AM
Time complexity measures the execution time of an algorithm relative to the size of the input. Tips for reducing the time complexity of C++ programs include: choosing appropriate containers (such as vector, list) to optimize data storage and management. Utilize efficient algorithms such as quick sort to reduce computation time. Eliminate multiple operations to reduce double counting. Use conditional branches to avoid unnecessary calculations. Optimize linear search by using faster algorithms such as binary search.
How to use caching in Golang distributed system?
Jun 01, 2024 pm 09:27 PM
In the Go distributed system, caching can be implemented using the groupcache package. This package provides a general caching interface and supports multiple caching strategies, such as LRU, LFU, ARC and FIFO. Leveraging groupcache can significantly improve application performance, reduce backend load, and enhance system reliability. The specific implementation method is as follows: Import the necessary packages, set the cache pool size, define the cache pool, set the cache expiration time, set the number of concurrent value requests, and process the value request results.
Caching mechanism and application practice in PHP development
May 09, 2024 pm 01:30 PM
In PHP development, the caching mechanism improves performance by temporarily storing frequently accessed data in memory or disk, thereby reducing the number of database accesses. Cache types mainly include memory, file and database cache. Caching can be implemented in PHP using built-in functions or third-party libraries, such as cache_get() and Memcache. Common practical applications include caching database query results to optimize query performance and caching page output to speed up rendering. The caching mechanism effectively improves website response speed, enhances user experience and reduces server load.
In-depth understanding of function refactoring techniques in Go language
Mar 28, 2024 pm 03:05 PM
In Go language program development, function reconstruction skills are a very important part. By optimizing and refactoring functions, you can not only improve code quality and maintainability, but also improve program performance and readability. This article will delve into the function reconstruction techniques in the Go language, combined with specific code examples, to help readers better understand and apply these techniques. 1. Code example 1: Extract duplicate code fragments. In actual development, we often encounter reused code fragments. At this time, we can consider extracting the repeated code as an independent function to
How to optimize the startup items of WIN7 system
Mar 26, 2024 pm 06:20 PM
1. Press the key combination (win key + R) on the desktop to open the run window, then enter [regedit] and press Enter to confirm. 2. After opening the Registry Editor, we click to expand [HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorer], and then see if there is a Serialize item in the directory. If not, we can right-click Explorer, create a new item, and name it Serialize. 3. Then click Serialize, then right-click the blank space in the right pane, create a new DWORD (32) bit value, and name it Star
What are some ways to resolve inefficiencies in PHP functions?
May 02, 2024 pm 01:48 PM
Five ways to optimize PHP function efficiency: avoid unnecessary copying of variables. Use references to avoid variable copying. Avoid repeated function calls. Inline simple functions. Optimizing loops using arrays.
Vivox100s parameter configuration revealed: How to optimize processor performance?
Mar 24, 2024 am 10:27 AM
Vivox100s parameter configuration revealed: How to optimize processor performance? In today's era of rapid technological development, smartphones have become an indispensable part of our daily lives. As an important part of a smartphone, the performance optimization of the processor is directly related to the user experience of the mobile phone. As a high-profile smartphone, Vivox100s's parameter configuration has attracted much attention, especially the optimization of processor performance has attracted much attention from users. As the "brain" of the mobile phone, the processor directly affects the running speed of the mobile phone.
Hash table-based data structure optimizes PHP array intersection and union calculations
May 02, 2024 pm 12:06 PM
The hash table can be used to optimize PHP array intersection and union calculations, reducing the time complexity from O(n*m) to O(n+m). The specific steps are as follows: Use a hash table to map the elements of the first array to a Boolean value to quickly find whether the element in the second array exists and improve the efficiency of intersection calculation. Use a hash table to mark the elements of the first array as existing, and then add the elements of the second array one by one, ignoring existing elements to improve the efficiency of union calculations.
