Introduction to PHP extension development, introduction to php extension_PHP tutorial

Introduction to PHP extension development, introduction to php extension

Original text:http://www.orlion.ga/ 1090/

Write the simplest function to convert all strings into uppercase letters:

<span><?php
    function my_toupper($str) {
        return strtoupper($str);
    }
    
    echo my_toupper('demo');
?></span>

Now we develop a php extension to implement the function of my_toupper.

Step1:

PHP provides an extension framework generator: ext_skel. This tool is in the ext directory of the PHP source code (mine is /usr/local/src/php-5.6.17/ext/). First, we create an orlion.skel file in the ext directory of the PHP source code. The file content is:

<span>string my_toupper(string str)</span>

This file is to tell ext_skel that our extension has the my_toupper function, and then execute:

<span>./ext_skel --extname=orlion --proto=orlion.skel</span>

 

This step will create a folder orlion in the current directory. The directory structure is like this:

 

At this time, the extended framework is set up.

Step2:

Modify config.m4 in the orlion directory and remove the dnl in lines 10, 11, and 12 of this file:

means

 

changed to:

 

 

Step3:

The next step is to implement our function. Open orlion.c, then find the function PHP_FUNCTION (my_toupper) and modify it as follows:

 

Then compile the extension and run it in sequence:

<span>$ /usr/local/php/bin/phpize
$ ./configure --with-php-config=/usr/local/php/bin/php-config
$ make</span>

Step4:

To add the extension to php, first copy orlion/mudules/orlion.so in our extension to the php extension directory:

 

Then modify the configuration php.ini and add "extension=orlion.so" at the end of the file and restart php-fpm.

Step5:

Write a test.php file to test:

<span><?php
    var_dump(my_toupper('abc'));
?></span>

Run it and you will see the output of ABC, success!

For information on PHP kernel technology, please visit: http://www.orlion.ga/tag/php-internal/

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