PHP擴充開發-LINUX環境的代碼執行個體分享

LINUX環境下開發PHP擴充的步驟如下：

1、下載PHP源碼，解壓，我的解壓目錄是：/root/lamp/php-5.5.37

2、cd到/root/lamp/php-5.5.37/ext目錄下，建立檔案test_extension.def檔案

int a(int x, int y)string b(string str, int n)

3、通過擴充架構產生器產生架構目錄：
ext_skel –extname=test_extension –proto=test_extension.def
產生成功結果如下：

Creating directory test_extensionawk: /root/lamp/php-5.5.37/ext/skeleton/create_stubs:56: warning: escape sequence `\|' treated as plain `|'Creating basic files: config.m4 config.w32 .svnignore test_extension.c php_test_extension.h CREDITS EXPERIMENTAL tests/001.phpt test_extension.php [done].To use your new extension, you will have to execute the following steps:1.  $ cd ..2.  $ vi ext/test_extension/config.m43.  $ ./buildconf4.  $ ./configure --[with|enable]-test_extension5.  $ make6.  $ ./sapi/cli/php -f ext/test_extension/test_extension.php7.  $ vi ext/test_extension/test_extension.c8.  $ makeRepeat steps 3-6 until you are satisfied with ext/test_extension/config.m4 andstep 6 confirms that your module is compiled into PHP. Then, start writingcode and repeat the last two steps as often as necessary.

4、切換到產生的架構目錄下：cd test_extension
5、修改設定檔config.m4，去掉10、11、12行前面的dnl，如下

PHP_ARG_WITH(test_extension, for test_extension support,Make sure that the comment is aligned:[  --with-test_extension             Include test_extension support])

6、實現函數a和b的功能，vi test_extension.c，修改後函數a、b如下

PHP_FUNCTION(a){        int argc = ZEND_NUM_ARGS();        long x;        long y;        if (zend_parse_parameters(argc TSRMLS_CC, "ll", &x, &y) == FAILURE)        {                php_error(E_WARNING, "zend_parse_parameters failure!");                                return;        }        RETURN_LONG(x + y);}PHP_FUNCTION(b){        char *str = NULL;        int argc = ZEND_NUM_ARGS();        int str_len;        long n;        char *result;        char *ptr;        int result_length;        if (zend_parse_parameters(argc TSRMLS_CC, "sl", &str, &str_len, &n) == FAILURE)        {                        php_error(E_WARNING, "zend_parse_parameters failure!");                                return;        }        result_length = str_len * n;        result = (char *) emalloc(result_length + 1);        ptr = result;        while (n--) {                memcpy(ptr, str, str_len);                ptr += str_len;        }        *ptr = '/0';        RETURN_STRINGL(result, result_length, 0);}

7、test_extension目錄下執行：/usr/local/bin/phpize

Configuring for:PHP Api Version:         20121113Zend Module Api No:      20121212Zend Extension Api No:   220121212

8、配置：./configure –with-php-config=/usr/local/bin/php-config
9、編譯：make
10、安裝：make install
安裝完成後/usr/local/lib/php/extensions/no-debug-zts-20121212/下會產生test_extension.so

11、修改php.in，加上：extension=test_extension.so