### php_hello.h ```c // php_hello.h extern zend_class_entry *person_ce_ptr; PHP_METHOD(hello,__construct); PHP_METHOD(hello,saying); PHP_METHOD(hello,__destruct); ``` ### hello.c ```c // hello.c zend_class_entry person_ce; zend_class_entry *person_ce_ptr; ZEND_BEGIN_ARG_INFO_EX(arginfo_person_saying, 0, 0, 1) ZEND_ARG_INFO(0, msg) // zend_internal_arg_info宏定义 ZEND_END_ARG_INFO() const zend_function_entry person_functions[] = { PHP_ME(hello, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR) // ZEND_ACC_PUBLIC表示访问级别为public，ZEND_ACC_CTOR表示是构造函数 PHP_ME(hello, saying, arginfo_person_saying, ZEND_ACC_PUBLIC) PHP_ME(hello, __destruct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_DTOR) // ZEND_ACC_DTOR表示析构函数 PHP_FE_END }; PHP_METHOD(hello, saying) { char *content; size_t content_len; if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &content, &content_len) == FAILURE) { return; } // saying方法参数值赋值给name属性,用zend_update_property_string快捷函数代替 // zval tmp; // ZVAL_STRING(&tmp, content); // Z_SET_REFCOUNT(tmp, 0); // zend_update_property(scope, object, name, name_length, &tmp); // saying方法参数值赋值给name属性 zend_update_property_string(person_ce_ptr, getThis(), ZEND_STRL("name"), content); zval *self = getThis(); // getThis返回一个zval指针 zval *name; zval rv; // 读取name属性并打印name的值 name = zend_read_property(Z_OBJCE_P(self), self, ZEND_STRL("name"), 0 TSRMLS_CC, &rv); // Z_OBJECT_P展开后是(zval).value.obj->ce php_printf("%s", Z_STRVAL(name)); // zend_read_property返回一个zval结构, Z_STRVAL(name)展开后name->value.str.val } PHP_MINIT_FUNCTION(hello) { INIT_CLASS_ENTRY(person_ce, "person", person_functions); // 类名和类方法 person_ce_ptr = zend_register_internal_class(&person_ce TSRMLS_CC); // 注册 zend_declare_property_null(person_ce_ptr, ZEND_STRL("name"), ZEND_ACC_PUBLIC TSRMLS_CC); // 定义name属性，默认值为null return SUCCESS; } ``` ### 使用 ```php $person = new Person(); $person->saying("hello wolrd"); echo $person->name . "\n"; ``` 上面是一个类实现方法，代码都有详细的注释，以下是一些知识点补充： ```c // 读取普通属性 ZEND_API zval *zend_read_property(zend_class_entry *scope, zval *object, char *name, int name_length, zend_bool silent TSRMLS_DC); // 读取静态属性 ZEND_API zval *zend_read_static_property(zend_class_entry *scope, char *name, int name_length, zend_bool silent TSRMLS_DC); // 更新普通属性 ZEND_API void zend_update_property(zend_class_entry *scope, zval *object, char *name, int name_length, zval *value TSRMLS_DC); // 更新静态属性 ZEND_API int zend_update_static_property(zend_class_entry *scope, char *name, int name_length, zval *value TSRMLS_DC); ``` 快捷函数 ```c ZEND_API void zend_update_property_null(zend_class_entry *scope, zval *object, char *name, int name_length TSRMLS_DC); ZEND_API void zend_update_property_bool(zend_class_entry *scope, zval *object, char *name, int name_length, long value TSRMLS_DC); ZEND_API void zend_update_property_long(zend_class_entry *scope, zval *object, char *name, int name_length, long value TSRMLS_DC); ZEND_API void zend_update_property_double(zend_class_entry *scope, zval *object, char *name, int name_length, double value TSRMLS_DC); ZEND_API void zend_update_property_string(zend_class_entry *scope, zval *object, char *name, int name_length, const char *value TSRMLS_DC); ZEND_API void zend_update_property_stringl(zend_class_entry *scope, zval *object, char *name, int name_length, const char *value, int value_length TSRMLS_DC); ZEND_API int zend_update_static_property_null(zend_class_entry *scope, char *name, int name_length TSRMLS_DC); ZEND_API int zend_update_static_property_bool(zend_class_entry *scope, char *name, int name_length, long value TSRMLS_DC); ZEND_API int zend_update_static_property_long(zend_class_entry *scope, char *name, int name_length, long value TSRMLS_DC); ZEND_API int zend_update_static_property_double(zend_class_entry *scope, char *name, int name_length, double value TSRMLS_DC); ZEND_API int zend_update_static_property_string(zend_class_entry *scope, char *name, int name_length, const char *value TSRMLS_DC); ZEND_API int zend_update_static_property_stringl(zend_class_entry *scope, char *name, int name_length, const char *value, int value_length TSRMLS_DC); ``` ### PHP_METHOD PHP_METHOD(classname, name) ```c // php.h #define PHP_METHOD ZEND_METHOD // zend_API.h #define ZEND_METHOD(classname, name) ZEND_NAMED_FUNCTION(ZEND_MN(classname##_##name)) ZEND_MN(name) zim_##name #define ZEND_NAMED_FUNCTION(name) void name(INTERNAL_FUNCTION_PARAMETERS) ``` 例如PHP_METHOD(hello, saying)展开后如下： ```c zim_hello_saying(zend_execute_data *execute_data, zval *return_value) ```