PHP study notes PHP extension development tutorial_PHP tutorial

PHP extension development is not something that all developers can operate. Below I will demonstrate the implementation process of PHP extension development. Students can refer to it if necessary.

Let’s first assume that we need such an extension and provide a function called tao_string. Its main function is to return a period of characters. The corresponding PHP code may be like this:

The code is as follows	Copy code
代码如下 复制代码 function tao_string($str){ $result = $str； return $result; } function tao_string($str){ $result = $str; return $result; }

The first step is to generate code

In order to extend the convenience of development, PHP provides a tool ext_skel similar to a code generator. For details, please refer to the official instructions of php.net (https://svn.php.net/repository/php/php-src/trunk/README. EXT_SKEL).

Create a file tao.skel with the content

代码如下	复制代码
cd MooENV/src/php-5.3.8/ext/ ./ext_skel --extname=tao --proto=tao.skel cd tao/

string tao_string(string str)

Just tell ext_skel that there is a function called tao_string in the extension we want to do. Then execute

The code is as follows	Copy code
cd MooENV/src/php-5.3.8/ext/ ./ext_skel --extname=tao --proto=tao.skel  代码如下 复制代码 dnl PHP_ARG_WITH(tao, for tao support, dnl Make sure that the comment is aligned: dnl [  --with-tao             Include tao support]) 修改为 PHP_ARG_WITH(tao, for tao support, Make sure that the comment is aligned: [  --with-tao             Include tao support]) cd tao/

At this time, the extended code framework of tao has come out.
The second step is to modify the configuration

代码如下	复制代码
PHP_FUNCTION(tao_string) { char *str = NULL; int argc = ZEND_NUM_ARGS(); int str_len; char *result; if (zend_parse_parameters(argc TSRMLS_CC, "s", &str, &str_len) == FAILURE) return; str_len = spprintf(&result, 0, "wo shi %.78s", str); RETURN_STRINGL(result, str_len, 0); }

Then modify the config.m4 file to delete the first dnl of the three lines 10, 11, and 12, that is,

The code is as follows	Copy code
dnl PHP_ARG_WITH(tao, for tao support, dnl Make sure that the comment is aligned:  代码如下 复制代码 /usr/local/php/bin/phpize ./configure --with-php-config=/usr/local/php/bin/php-config make dnl [ --with-tao ] Include tao support]) was changed to PHP_ARG_WITH(tao, for tao support, Make sure that the comment is aligned: [ --with-tao                       Include tao support])

The third step is to implement the function Modify the source code tao.c file Find and modify the tao_string function to

The code is as follows	Copy code
PHP_FUNCTION(tao_string) { char *str = NULL; int argc = ZEND_NUM_ARGS(); int str_len; char *result; if (zend_parse_parameters(argc TSRMLS_CC, "s", &str, &str_len) == FAILURE) return; str_len = spprintf(&result, 0, "wo shi %.78s", str); RETURN_STRINGL(result, str_len, 0); }

The fourth step, compile the extension After saving, start compiling

The code is as follows	Copy code
/usr/local/php/bin/phpize ./configure --with-php-config=/usr/local/php/bin/php-config make

Step 5, add extensions
At this time, if everything goes well, the extension is already in modules/tao.so. The following is to add this extension to PHP so that our PHP program can call it.

cp modules/tao.so /usr/local/php/ext/ vim /usr/local/php/etc/php.ini

The code is as follows  代码如下 复制代码 cp modules/tao.so /usr/local/php/ext/ vim /usr/local/php/etc/php.ini extension=/usr/local/php/ext/tao.so #在php.ini文件最后增加这一行 service php-fpm restart #重启PHP服务 cp tao.php /data/www/wwwroot/default/	Copy code

extension=/usr/local/php/ext/tao.so #Add this line at the end of the php.ini file service php-fpm restart #Restart PHP service

cp tao.php /data/www/wwwroot/default/

www.bkjia.comhttp: //www.bkjia.com/PHPjc/629901.htmlTechArticlePHP extension development is not something that all developers can operate. Let me demonstrate the implementation process of PHP extension development. , students can enter for reference if necessary. Let's first assume that...