


Developing PHP extensions with C Example (Basic Edition)_PHP Tutorial
Step one: Create an extended skeleton.
[html]
cd /usr/local/src/php-5.3.6/ext/
./ext_skel --extname=laiwenhui
cd /usr/local/src/php-5.3.6/ext/
./ext_skel --extname=laiwenhui Step 2: Modify the compilation parameters.
[html] view plaincopyprint?cd php-5.3.6/ext/laiwenhui
vi config.m4
cd php-5.3.6/ext/laiwenhui
Remove vi config.m4
PHP_ARG_ENABLE(laiwenhui, whether to enable laiwenhui support,
[ --enable-laiwenhui Enable laiwenhui support])
dnl
in front of two lines
Modified to:
dnl Otherwise use enable:
PHP_ARG_ENABLE(laiwenhui, whether to enable laiwenhui support,
dnl Make sure that the comment is aligned:
[ --enable-laiwenhui Enable laiwenhui support])
Step 3: Write code
[html]
vim php_laiwenhui.h
vim php_laiwenhui.h
in
PHP_FUNCTION(confirm_laiwenhui_compiled);
Add a new line after
PHP_FUNCTION(test);
[html]
vim laiwenhui.c
vim laiwenhui.c
at
PHP_FE(confirm_laiwenhui_compiled, NULL)
Add after
PHP_FE(test, NULL)
**Add the following code at the end of the file:**
[html]
PHP_FUNCTION(test)
{
char *arg = "This is my first extention!";
int len;
char *strg;
len = spprintf(&strg, 0, "%sn", arg);
RETURN_STRINGL(strg, len, 0);
}
PHP_FUNCTION(test)
{
char *arg = "This is my first extention!";
int len;
char *strg;
len = spprintf(&strg, 0, "%sn", arg);
RETURN_STRINGL(strg, len, 0);
}Step 4: Compile the code
[html]
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make
make install
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make
make install
My PHP installation path is: /usr/local/php
At this time, a file /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/laiwenhui.so
Edit the PHP configuration file php.ini and add the extension:
[html]
vim php.ini
vim php.ini is added under the [PHP] module:
[html]
extension = laiwenhui.so
extension = laiwenhui.so change the extension_dir in the php.ini file to this directory:
[html]
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/"
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/"
Step 5: Check the installation results
1. Restart php-fpm, ngixn
2./use/local/php/bin/php -m
Check to see if the laiwenhui extension is included.
Step 6: Execute the test code
Create test.php
in the website root directory
vim test.php
The code content is as follows
echo test();
The result after execution is:
This is my first extention!
If you can successfully complete the above steps, congratulations on completing your first extension.

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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