


PHP Mobile Internet Development (1) - Environment Setup and Configuration_PHP Tutorial
1. Basic process of PHP5.4 environment matching
Apache: Web service provider. Official website: www.apache.org
PHP: Official website: www.php.net
Mysql: Official website: www.mysql.com
2. Software download
Apache download address: http://download.csdn.net/detail/lxq_xsyu/7057423
PHP download address: http://download.csdn.net/detail/lxq_xsyu/7057401
Mysql download address: http://download.csdn.net/detail/lxq_xsyu/6468461
3. Environment setup
(1) Apache installation
Installation successful
(2) Unzip PHP5.4
(3) Configure Apache’s httpd.conf file
Apache installation directory
- ServerRoot "D:/Apache Software Foundation"
Listening port
- #Listen 12.34.56.78:80
- Listen 80
4. Test whether the construction is successfulLoad PHP component
Server name
- LoadModule php5_module "D:/php54/php5apache2_2.dll"
file root directory
- #ServerName www.meritit.com:80
Permissions folder
- DocumentRoot "D:/Apache Software Foundation/htdocs"
Index (default visits home page)
error log
- DirectoryIndex index.html
- ErrorLog "logs/error.log"
access log
- CustomLog "logs/access.log" common
Configure parsing php
- AddType application/x-compress .Z
- AddType application/x-gzip .gz .tgz
- AddType application/x-httpd-php .php
error type
- #ErrorDocument 500 "The server made a boo boo."
- #ErrorDocument 404 /missing.html
- #ErrorDocument 404 "/cgi-bin/missing_handler.pl"
- #ErrorDocument 402 http://www.meritit.com/subscription_
Create a.php
- phpinfo();
- ?>
You can see that the php configuration file cannot be found. We specify the php configuration file directory in the apache configuration file
- PHPIniDir "D:/php54"
5. Configure multi-site access
Remove the above comment (open the virtual host configuration file)
- #Virtual hosts
- Include conf/extra/httpd-vhosts.conf
Configure two sites in httpd-vhosts.conf as follows
- DocumentRoot "D:/Apache Software Foundation/a_com"
- ServerName 127.0.0.2
- ServerAlias www.dummy-host.meritit.com
- ErrorLog "logs/dummy-host.meritit.com-error.log"
- CustomLog "logs/dummy-host.meritit.com-access.log" common
- DocumentRoot "D:/Apache Software Foundation/b_com"
- ServerName 127.0.0.3
- ErrorLog "logs/dummy-host2.meritit.com-error.log"
- CustomLog "logs/dummy-host2.meritit.com-access.log" common
Note: Once a virtual host is configured, the DocumentRoot configured previously will be invalid.
D:Apache Software Foundationa_coma.php
D:Apache Software Foundationb_comb.php
- echo "aaaaaa";
- ?>
- echo "bbbbbb";
- ?>
Note: You need to modify the permission folder directory
Visit results:

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

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.


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