PHP's getting started with so extension Programming

1. Obtain PHP source code
   Http://www.php.net/downloads.php#v5
2. Decompress the source code package
3. $ CD php-5.2.5/EXT
   Create an extension function prototype file.
   Gedit Tsing. proto
   Input function prototype
   String say_hello (string str_name)
   Save and exit gedit
4. Generate Extension
   $./Ext_skel -- extname = Tsing -- proto = Tsing. proto
   As the name suggests, ext_sket is the basic skeleton for generating the extension module. Tsing is the name of the extension module. After execution, a directory with the corresponding name will be created under the ext directory.
5. $ CD Tsing
6. Modify the config. M4 File
   # Gedit./EXT/my_so_name/config. M4
   Remove the following line of code comment mark "DNL"
   Php_arg_with (Tsing, for tsing support,
   Make sure that the comment is aligned:
   [-- With-tsingInclude Tsing support])
   Or the annotation mark of the following lines
   Php_arg_enable (Tsing, whether to enable test support,
   Make sure that the comment is aligned:
   [-- Enable-tsingEnable test support])
   These lines describe how PHP loads the so module during compilation with-tsing or enable-Tsing.
   With-tsing indicates that a third-party library is required, and enable-tsing indicates that a third-party library is not required.
   
7. # Gedit./EXT/Tsing. c
   In row 43rd, The say_hello function is automatically registered in the header.
   /* {Tsing_functions []
   *
   * Every user visible function must have an entry in tsing_functions [].
   */
   Zend_function_entry tsing_functions [] = {
   Php_fe (confirm_tsing_compiled, null)/* for testing, remove later .*/
   Php_fe (say_hello, null)
   {Null, null, null}/* must be the last line in tsing_functions [] */
   };
   /*}}}*/
   In row 177th, we can see that the function defined in the prototype file Tsing. proto has generated the code skel in Tsing. C.
   /* {Proto string say_hello (string str_name)
   */
   Php_function (say_hello)
   {
   Char * str_name = NULL;
   Int argc = zend_num_args ();
   Int str_name_len;
   If (zend_parse_parameters (argc tsrmls_cc, "S", & str_name, & str_name_len) = failure)
   Return;
   Php_error (e_warning, "say_hello: not yet implemented ");
   }
   /*}}}*/
   Comment out 186th lines of code as follows
   // Php_error (e_warning, "say_hello: not yet implemented ");
   Add
   Php_printf ("hello,". str_name .";");
   Save and exit gedit
   
8. View header files
   # Gedit./EXT/Tsing/php_tsing.h
   We found that the prototype of the say_hello function has been added in row 44.
   Php_function (say_hello );
   Save and exit gedit
   
9. Configuration
   There are two ways to configure
   Method
   #./Buildconf -- force (the force parameter is used to prevent your PHP version from being release)
   # ../Configure -- disable-all -- With-tsing = shared -- with-apxs2 =/usr/sbin/apxs -- prefix =/usr/lib/PHP/modules
   In the preceding command, -- disable-all is used to speed up compilation and reduce the number of modules to be compiled by default by PHP. -- With-tsing = shared to directly produce the. So file after compilation, -- with-apxs2 =/usr/sbin/apxs is determined based on the path and version of Apache installation on your server

   Method B
   Find the bin/phpize in the PHP installation directory.
   $/Usr/bin/phpize
   Generate the configure file in the Tsing directory
   Determine the installation location of the PHP-config file and apxs, and run configure
   . /Configure -- With-PHP-Config =/usr/bin/PHP-config -- enable-tsing = shared -- with-apxs2 =/usr/sbin/apxs -- prefix =/usr/lib/ PHP/modules
   

10. Compile
    # Make
    
11. Install
    # Add gedit/etc/PHP. d/Tsing. ini to extension = Tsing. So

    # Make install or # cp./EXT/Tsing/. libs/Tsing. So/usr/lib/PHP/EXT/
    

12. Restart Apache
    
13. View the results of the phpinfo () function and check whether the Tsing Column exists.
    
14. In this way, you can directly use dynamic extended functions in the calling file.
    Echo say_hello ("Tsing ");
    Output
    Hello, Tsing;

References
Http://hi.baidu.com/thinkinginlamp/blog/item/58a2d7ca6c67eb46f21fe79a.html
Http://hi.baidu.com/thinkinginlamp/blog/item/7c691f3030084099a9018e1b.html
Http://blog.csdn.net/taft/archive/2006/02/10/596291.aspx How to Write PHP extensions
Installation of http://php.chinaunix.net/manual/zh/install.pecl.php PECL extension Library