Quickly develop a PHP extension (so component) tutorial
This article is a very quick way to explain how to make a PHP 5.2 environment extension (PHP Extension), in the hope that in a graphic way to let the quick learning of friends to understand the production process.
Requirements: For example, to develop an extension called Lanhaicode, the extension is a function lanhai_test (), enter a string, function return: Your input string:xxxxx.
Requirements: Learn about C + + programming, familiar with PHP programming
Environment: Download a PHP corresponding version of the source code, I here is php-5.2.17, the normal installation of PHP, assuming that our PHP installed in the/usr/local/php directory, the source code in/root/soft/php/php-5.2.17/, now start!
php-5.2.17 Download Address:
http://blog.lrenwang.com/down/soft/php-5.2.17.tar.bz2
Decompression: TAR-VXJF php-5......tar.bz2
Step one: Build the extension framework
Cd/root/soft/php/php-5.2.17/ext./ext_skel--extname=lanhaicodecd/root/soft/php/php-5.2.17/ext/lanhaicodevi Config.m4
After opening the file, remove DNL and get the following information:
Php_arg_enable (Lanhaicode, whether to ENABLE Lanhaicode support,[--enable-lanhaicode ENABLE lanhaicode support])
Save exit.
Step Two: Write code
VI php_lanhaicode.h
Found: Php_function (confirm_lanhaicode_compiled); Add a line:
Save exit.
VI lanhaicode.c
Add our function to the array, find Zend_function_entry lanhaicode_functions[], add:
Php_fe (Lanhaicode, NULL)
Add the following code to the last side of the lanhaicode.c file:
Php_function (lanhai_test) {char *arg = Null;int Arg_len, Len;char *strg;if (Zend_parse_parameters (ZEND_NUM_ARGS () TSRMLS_CC, "s", &arg, &arg_len) = = FAILURE) {return;} Len = spprintf (&STRG, 0, "Your input string:%s\n", ARG); Return_stringl (STRG, Len, 0);}
Save exit.
Step three: Compile and install
Cd/root/soft/php/php-5.2.17/ext/lanhaicode/usr/local/php/bin/phpize./configure--with-php-config=/usr/local/php /bin/php-configmakemake Testmake Install
The following error occurred during the./configure process:
Checking for gcc ... no
Checking for cc ... No
Checking for cc ... No
Checking for CL ... No
Configure:error:no acceptable C compiler found in $PATH
See ' Config.log ' for more details.
Workaround: Install the GCC software suite and execute the command:
Yum install-y gcc
Now, see if there's a/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/lanhaicode.so.
Edit the php.ini and add the extension:
Vi/usr/local/php/lib/php.ini
Added under [PHP] module:
Extension = lanhaicode.so
Save exit.
Note: If you do not have the extension file directory, or install an error, then you can build this directory yourself, and then copy the extension to the directory, and then remember to change the php.ini file Extension_dir to the directory:
Extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/"
Fourth Step: Check the installation results
Now look at the module loaded without:
/usr/local/php/bin/php-m, you should print out:
[PHP Modules]
...
Lanhaicode
...
[Zend Modules]
Then restart Apache, Output phpinfo (), should be able to see:
Lanhaicode
Lanhaicode Support Enabled
See if the function exists and is called, built in the Web directory: lanhaicode.php
";p Rint_r (Get_loaded_extensions ());p Rint_r (Get_extension_funcs (' Lanhaicode ')); Echo lanhai_test (' My first PHP Extension '); echo "
";? >
