


How to correctly configure the PHP development environment_PHP tutorial
Before developing the PHP language, the development environment needs to be properly configured so that our program can run perfectly. So, how to correctly configure the PHP development environment? This article will introduce the download, installation and configuration of Apache, MySql, and PHP, and describe the establishment of development environments in Windows and Linux environments respectively.
1. Download Apache, MySql and PHP
1. Download Apache
Apache server can download the Apache installation program for windows through the official mirror address, but they are all in English, and the download speed is too fast slow. I suggest that you go to Huajun, Sky or Zhongguancun to download the latest version of the installation program, which is very fast.
2. Download MySQL
The official website of MySQL is http://www.mysql.com. You can download the latest version of MySQL. Again, I recommend that you download it from Huajun, Tiantian or Zhongguancun.
3. Download PHP
The official website of PHP is http://www.php.net. The latest version can be downloaded.
2. Configure the PHP development environment under windows
1. The installation of Apache, MySql and PHP is just like installing other software in windows. It is recommended to install the Apache and PHP software in the D drive directory and the MySQL software in the C drive, so MySQL can start running smoothly without any settings.
2. Configure the development environment
In order to allow windows to execute PHP, further work needs to be done. Follow the following steps to set up the environment:
1) In the PHP installation directory, find the file php5ts.dll and copy it Copy to the system32 directory on the C drive.
2) In the PHP installation directory, find the file libmysql.dll and copy it to the system32 directory on the C drive.
3) In the PHP installation directory, find the file php.ini and copy it to C:/windows. This file is the basic file for configuring PHP. For example, to set the server root directory configuration, use a text editor to open the php.ini file and find "doc_root=". Because I installed Apache in the root directory of the D drive by default, modify this configuration. The value of the item is: doc_root=d:/apache2/htdocs
Tip: Users can modify the value of this configuration item according to the path where they installed Apache.
4) Find "extension_dir ="./"" in php.ini. This configuration item is used to load the PHP extension module. Modify the configuration item as follows: extension_dir = d:/php/ext, (need to press Modify the PHP loading location in your own installation directory).
5) Find ";extension=php_mysql.dll" in php.ini and remove the semicolon in front of this item to make this item effective. This configuration item is used to enable PHP to support MySQL. The semicolon here serves as a comment. After modifying the PHP configuration file php.ini, save and exit the file.
6) Configure Apache. Go to the conf directory under the Apache installation directory and open the Apache configuration file http.conf with a text editor. Find dynamic shared object (DOS) Support in this file, and add the following configuration item at the end of the LoadModule line: LoadModule php5_module d:/php/php5apache2.dll (you need to modify the PHP loading location according to your own installation directory). This item is to load the PHP module php5apache2.dll through Apache, that is, PHP runs as a module of Apache.
7) In order for Apache to support files with the .php suffix, find the AddType item in http.conf and add the following configuration item at the end: AddType application/x-httpd-php.php. Find directoryIndex and add index.php at the end. In order to support Chinese, find AddDefaultCharset ISO-8859-1 and change it to AddDefaultCharset GB2312. Save http.conf after modification. This completes the basic configuration of Apache.
Note: It is strongly recommended that when modifying the Apache configuration file http.conf, you must abide by the principle of modifying a little and testing a little, that is, after each modification and saving http.conf, you must restart Apache. If Apache starts normally , then you can make subsequent modifications. Otherwise, it means that this modification is wrong, so check it carefully and modify it again. (www.bkjia.com)
3. Configure the PHP development environment under Linux
1. Installation of MySQL
Download the MySQL installation file MySQL-server-4.0.20-0.i386 from the MySQL official website .rpm, execute the following command to complete the installation of MySQL.
rpm -ivh MySQL-server-4.0.20-0.i386.rpm
Without setting a MySQL password, run the following command to test whether MySQL is installed successfully.
mysql -u root
If words similar to welcome to the mysql mointor. commands end with; or /g appear, the installation is successful.
2. Installation of Apache
Download the UNIX version of the compressed package from the official website of Apache. Take httpd-2.0.52.tar.gz as an example. Assume that the resource package is placed under /usr/local/src. Enter this After decompressing, enter the directory httpd-2.0.52 and execute the following command:
Command:
./configure --prefix=/usr/local/apache2 --enable--module=so
Among them, --prefix=/usr/local/apache2 is used to specify the installation directory of Apache. Next, compile and execute the following commands to complete the installation.
make
mae install
3. Configure the installation of PHP development environment
1) Download the php5.1.4.tar.gz compressed package from the PHP official website and decompress the file package. The command is as follows:
tar -zxf php5. 1.4.tar.gz
2) Go to the decompressed directory and execute the following command to complete the PHP installation directory and other related configurations:
./configure --prefix=/usr/local/php -with-mysql= /var/lib/mysql
3) Then compile PHP, the command is as follows:
make
make install
4) Copy the file in the current directory to the lib directory of the PHP large installation directory, and rename it php.ini, the command is as follows:
cp php.ini-dist /usr/local/php/lib/php.ini
5) After the above configuration of the PHP development environment is installed, refer to the configuration under windows. Related configurations, configuration items and configuration methods are similar

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PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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