How to run php: First download and install the "phpstudy" software; then copy the php file to the www directory under the installation directory; then enter the link in the browser as "http://127.0.0.1 /php file"; finally check the running results through the browser.
Many friends have asked us recently, what is php? What is a php file? How to open php files and other issues, here is some information compiled by php Chinese website for everyone.
What is php:
PHP is the abbreviation of the English hypertext preprocessing language Hypertext Preprocessor. PHP is an HTML embedded language. It is a scripting language that is embedded in HTML documents and executed on the server side. The style of the language is similar to C language and is widely used. php is what everyone on the Internet often calls the backend, which is used to process databases, etc. Many websites are written in php, including www.baidu.com, www.php.cn and other websites, which are all written in php language. . Our articles are uploaded to the server database through php code
, and then statically generated through php code.
In a simple sentence, php is the same as a txt (text document). Notepad can open it, but what you see is the code, not after php is executed. For example, when we open the test.php code because the encoding is in gbk or utf8 format, when we use Notepad to open the php file in utf8 format, garbled characters appear when there are Chinese characters, so we recommend using notepad or editplus to support utf8. Format file software to open. (Ordinary users can choose notepad to open it, because notepad is relatively small
)A piece of php test code
The code is as follows:
<?php for($i=1;$i<=10;$i++){ echo $i.'<br />'; } ?>
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What file is php? how to open? Four ways to open php format files (picture)》
But everyone’s purpose is often not to see such code. If you want to see the effect after execution, you need to configure the php running environment .
www.php.cn
that you visit is a pre-configured PHP operating environment on the server side. It may be Linux or Windows. When purchasing space, please ask the IDC provider and ask them. Does it support PHP? If you purchase a space that does not support PHP in the future, it will not be able to support PHP. If you are testing the php code locally, you can use some tools such as phpstudy (phpstudy is relatively simple to install and use. After installation, copy the php file to the www directory under the installation directory and enter it in the browser http://127.0.0.1/php file is enough. If you select a port, you need to add the port (http://127.0.0.1: port number)
If you have set up a php running environment, go to the browser. Enter the URL in , and you can see the running effect of php (Note: the URL entered by everyone in the browser may be different, ours is the intranet IP)
As shown in the figure below:
Many friends who have no foundation often ask how to open PHP files. In fact, PHP is a web script, but it is different from the html xml tag language. It can be opened directly through the browser and requires PHP to run. The file can be accessed and opened only in the environment. If you only need to edit PHP to open the file, you only need to use Notepad or a related editor such as (DW, phpstorm, notepad++, etc.) to open and edit it (you can go to
The above is the detailed content of How to open php file? How to run php file?. For more information, please follow other related articles on the PHP Chinese website!

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


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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