Linux C language for PHP expansion _php skills

One, build PHP environment
Download PHP 5.2.6 source code and unzip
Compile and install, build PHP environment

Second, create an extension project
Access to the source directory
CD php5.2.6/ext/
./ext_skel--extname=my_ext
Create a project with the name My_ext, which will eventually generate the my_ext.so

Three, change configuration and program
$ VI EXT/MY_EXT/CONFIG.M4

According to your own choice, you will

DNL Php_arg_with (My_ext, for my_ext support,
DNL Make sure this comment is aligned:

DNL [--with-my_ext Include my_ext support])
Modified into

Php_arg_with (My_ext, for my_ext support,
Make sure this comment is aligned:

[--with-my_ext Include My_ext support])
or to

DNL php_arg_enable (My_ext, whether to ENABLE My_ext support,
DNL Make sure this comment is aligned:

DNL [--enable-my_ext enable my_ext support])
Modified into

Php_arg_enable (My_ext, whether to ENABLE My_ext support,

Make sure this comment is aligned:
[--enable-my_ext enable my_ext support])

$ VI ext/my_ext/php_my_ext.h

Will
Php_function (confirm_my_ext_compiled); /* For testing, remove later. */
Change to
Php_function (Say_hello);


$ VI ext/my_ext/my_ext.c

Will
Zend_function_entry php5cpp_functions[] = {
Php_fe (confirm_my_ext_compiled, NULL)/* For testing, remove later. */
{null, NULL, NULL}/* must is the last line in php5cpp_functions[] * *
};
Change to
Zend_function_entry php5cpp_functions[] = {
Php_fe (Say_hello, NULL)
{null, NULL, NULL}/* must is the last line in php5cpp_functions[] * *
};

At the end add:
Php_function (Say_hello)
{
zend_printf ("Hello world\n");
}

four, compile
$ CD My_ext
$/usr/local/php/bin/phpize
PS: If appears: Cannot find autoconf ..... Error message, you need to install the autoconf (installation process is slightly)
$./configure--with-php-config=/usr/local/php/bin/php-config
$ make

This will compile the my_ext/modules/my_ext.so

Five, configure PHP.ini
Put the my_ext.so into/usr/local/php/ext/Directory

$ VI php.ini

Modifications are added as follows:
Extension_dir = '/usr/local/php/ext/'
Extension=my_ext.so

Six, test
$ VI test.php
<?php
Say_hello ();
?>

$/usr/local/php/bin/php test.php
Hello world.

is done

PS: If you have questions, please leave a message, we discuss together