PHP扩展开发

基础入门实例

1. 生成扩展框架

    cd ~/php-7.0.30/ext #进入源码包扩展目录 ./ext_skel --extname=my_func #生成扩展基本架构

2. 修改配置文件

• 打开配置文件 config.m4

   dnl Otherwise use enable: dnl PHP_ARG_ENABLE(my_func, whether to enable my_func support, dnl Make sure that the comment is aligned: dnl [ ?--enable-my_func ??????????Enable my_func support]) #修改为： dnl Otherwise use enable: PHP_ARG_ENABLE(my_func, whether to enable my_func support, Make sure that the comment is aligned: [ ?--enable-my_func ??????????Enable my_func support])

  dnl 是注释符,表示当前行是注释。这段话是说如果此扩展依赖其他扩展，去掉PHP_ARG_WITH段的注释符；否则去掉PHP_ARG_ENABLE段的注释符。显然我们不依赖其他扩展或lib库，所以去掉PHP_ARG_ENABLE段的注释符:

1. 在 my_func.c 上实现函数功能

    PHP_FUNCTION(my_func) { ????????//zend_string *strg; ????????//strg = strpprintf(0, "hello world."); ????????//RETURN_STR(strg); ????????char *arg = NULL; ????????size_t arg_len; ????????char *strg; ????????if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &arg, &arg_len) == FAILURE) { ????????????????return; ????????} ????????strg = strpprintf(0, "Hello, my_func_print: %s", arg); ????????RETURN_STR(strg); }

2. 添加到编译列表里(my_func.c)：

    const zend_function_entry my_func_functions[] = { ????????PHP_FE(my_func, NULL) ?/*添加这行*/ ????????PHP_FE(confirm_my_func_compiled, ?????NULL) ??????????/* For testing, remove later. */ ????????PHP_FE_END ?????/* Must be the last line in my_func_functions[] */ };

3. 编译与安装

    /usr/local/php7/bin/phpize ./configure --with-php-config=/usr/local/php-7.0.31/bin/php-config make && make install #vim usr/local/php7/etc/php.ini extension=my_func.so

4. 测试

    php -r "echo my_func('this is a function extension.');"

不使用工具写扩展

1. 一个扩展（如：world）至少包含3个文件:
   • config.m4(phpize用来准备编译扩展的配置文件)
   • php_world.h(引用包含的头文件)
   • world.c(源码文件)

2. config.m4

    PHP_ARG_ENABLE(world, whether to enable world support, Make sure that the comment is aligned: [ ?--enable-world ??????????Enable hello support]) if test "$PHP_WORLD" != "no"; then ????AC_DEFINE(HAVE_WORLD,1,[ ]) ????PHP_NEW_EXTENSION(world, world.c, $ext_shared,, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1) fi

3. php_world.h

    #ifndef PHP_WORLD_H #define PHP_WORLD_H extern zend_module_entry hello_module_entry; #define phpext_hello_ptr &hello_module_entry #define PHP_WORLD_VERSION "0.1.0" #define PHP_WORLD_EXTNAME "world" #endif

4. world.c

    #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "php.h" #include "php_world.h" PHP_FUNCTION(world) { ????zend_string *strg; ????strg = strpprintf(0, "hello world. (from world module)"); ????RETURN_STR(strg); } const zend_function_entry world_functions[] = { ????PHP_FE(world, NULL) ????PHP_FE_END }; zend_module_entry world_module_entry = { ????STANDARD_MODULE_HEADER, ????PHP_WORLD_EXTNAME, ????world_functions, ????NULL, ????NULL, ????NULL, ????NULL, ????NULL, ????PHP_WORLD_VERSION, ????STANDARD_MODULE_PROPERTIES }; #ifdef COMPILE_DL_WORLD #ifdef ZTS ZEND_TSRMLS_CACHE_DEFINE() #endif ZEND_GET_MODULE(world) #endif

5. 编译安装：
   同上

PHP扩展开发

原文地址：https://www.cnblogs.com/one-villager/p/10338986.html