Phar:PHP文件归档
1. Phar简介
Phar是PHP Archive缩写,将php文件归档到一个文件包。
将一个模块的文件打包成一个phar,这样方便模块整体迁移,只需将phar文件移动过去,其他环境中include即可使用。
类似于java的 .jar 文件。
php 5.3时,为php的C语言扩展,安装php时会默认安装。
在安装目录 bin下面有phar文件,通过 php -m 查看php扩展,也应该能找到。
$ .bin/phar.phar help终端可以直接运行。
2. 创建Phar文件
2.1 修改php.ini配置文件
phar.readonly = 0 这个参数必须设置为0,如果为1,表示phar文档不可写。
phar.require_hash = 1 这个参数为每个phar打包的文件生成一个签名,如果发现签名有问题,则拒绝处理。防止外部注入一些不安全的脚本。
phar.cache_list 允许web server启动时预加载phar文档,提升访问速度。
2.2 创建phar对象
创建my.phar文件
<?phptry { $p = new Phar(dirname(__FILE__) . "my.phar", 0, 'my.phar');} catch (UnexpectedValueException $e) { die('Could not open my.phar');} catch (BadMethodCallException $e) { echo 'technically, this cannot happen';}使用startBuffering来打开缓冲,对文件修改,使用缓冲的好处是不用每次修改都保存文件,提升了效率。
$p->startBuffering();$p['file.txt'] = 'hi'; $p['file2.txt'] = 'there';$p['file3.txt'] = 'babyface';$p['file3.txt']->setMetadata(42);$p['test/time.php'] = file_get_contents('time.php');上面代码用来添加文档,添加了4个文档。最后一个time.php在test目录下面。
2.3 phar文件存根
文件存根是phar最开始运行的一段代码。
用setStub方式来创建
$p->setStub("<?php Phar::mapPhar('myphar.phar');__HALT_COMPILER();");最后关闭缓冲区
$p->stopBuffering();运行后,会在当前目录生成一个myphar.phar文件。
3. Phar文档使用
phar文档很方便的集成到其他应用程序中。使用时跟单个php文件一样看待,直接 include即可。
一般有下面两种方式:
include 'myphar.phar';这样把phar中所有的文件都引入了。
include 'phar://myphar.phar/test/time.php';这个只把test目录下的time.php文件引入了。
引入后可以直接使用原php文件中变量。
还可以直接读取:
echo file_get_contents('phar://my.phar/file.txt');这个会输出 hi。
地址:http://blog.csdn.net/yonggang7/article/details/24142725

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.

PHP 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 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 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 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

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.

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

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.

WebStorm Mac version
Useful JavaScript development tools

Dreamweaver CS6
Visual web development tools