


Steps to build a PHP development environment in Linux environment_PHP tutorial
This article mainly records the installation process of software/development environment through compilation. Other installation methods are ignored!
Article background:
Because PHP and Apache are installed through compilation and installation. However, the compilation and installation method requires c, c++ compilation environment.
Install build-essential through apt
$ sudo apt-get install build-essential
The steps for compilation and installation are generally divided into:
Compile configuration
$ ./configure --XXX (parameters)
Compile configuration Problems:
a. You cannot fully understand the software before installing it
b. If you don’t fully understand it, you don’t know how to install it (what parameters come with it)
c. You can choose one first The simplest installation method, with use, install multiple times to solve this problem
The process is relatively complicated and requires very complicated specific parameter configuration. The specific parameters can be viewed through configure --help
Compile
$ make
Install
$ sudo make install
***************************** * ********
Apache installation
1. Download httpd-2.2.11.tar.gz
2. Unzip
tar zxvf httpd-2.2.11.tar.gz
Under the path of executing the tar command, a httpd-2.2.11 directory will be generated
3. Check the compiled configuration information
Switch to the decompressed httpd-2.2.11 directory
./configure --help
Through this step, you can learn about the modules that can be installed and the installation configuration information that needs to be set
You can also check the manual further. Learn relevant information
4. Compile and configure
$ ./configure --prefix=/usr/local/apache2 Specify the installation directory
--enable- so Allows the use of external so modules
--with-mpm=prefork URL request jump strategy
5. Compile:
$ make
6. Installation: (Use sudo because the path to be installed /usr/local/apache2 does not belong to the personal path)
$ sudo make install
《Installation completed》
7. Test
Modify httpd.conf.
Change #ServerName www.example.com:80 to ServerName 127.0.0.1:80 (localhost:80)
Start sudo ./apachectl -k start
Stop sudo ./apachectl -k stop
Restart sudo ./apachectl -k restart (this command sometimes does not work, use stop+start instead)
************************************************************************ **
PHP installation
1. Download php-5.2.8.tar.gz
2. Unzip tar zxvf php-5.2.8.tar.gz
3. Check the compiled configuration information
Switch to the decompressed httpd-2.2.11 directory
./configure --help
Through this step, you can learn about the modules that can be installed and the installation configuration information that needs to be set
Further check the manual, You can also learn related information
4. Compilation configuration
./configure --prefix=/home/guandl/webenv/php528
--enable-mbstring
--with -apxs2=/usr/local/apache2/bin/apxs
5 Compile
make
6. Install
sudo make install
《 Installation Complete》
7. Copy php.ini
Because there is no php configuration file in the php directory $php/lib after installation, you need to copy php.ini-recommended in the decompression directory Copy to the lib directory of php
sudo cp php.ini-recommended /home/guandl/webenv/php528/lib/php.ini
8. Modify the apache configuration file httpd.conf
Add some content
LoadModule php5_module modules/libphp5.so has been automatically generated when installing php
AddType application/x-httpd-php .php
9. Test
Write a php file, such as any.php
phpinfo();
?>
Put it in the htdocs directory of apache
Restart apache
http://127.0.0.1/any.php

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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