PHP扩展开发-简单类扩展

今天来学习简单类扩展开发

实现目标为如下php的类

<?php
class classext(){

private $username;

CONST URL="http://www.google.com";

public function __construct(){}

public function getName(){
return $this->username;
}

public function setName($name){
$this->username=$name;
}

public function __destruct(){}

}

?>

1.先使用./ext_skel --extname=classext创建扩展框架

2.在php_classext.h中添加声明成员变量,代码如下

PHP_METHOD(classext,__construct);
PHP_METHOD(classext,__destruct);
PHP_METHOD(classext,getName);
PHP_METHOD(classext,setName);

3.在classext.c中添加相应的函数,我把所有代码贴出来大家参考

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_classext.h"

static int le_classext;

zend_class_entry *classext_ce;

/* 类方法的参数 */
ZEND_BEGIN_ARG_INFO(setName_args, 0)
ZEND_ARG_INFO(0, name)
ZEND_END_ARG_INFO()

PHP_METHOD(classext,__construct){

}

PHP_METHOD(classext,__destruct){

}

PHP_METHOD(classext,getName){
zval *self,*name;
self = getThis();
name = zend_read_property(Z_OBJCE_P(self),self,ZEND_STRL("username"),0 TSRMLS_CC);

RETURN_STRING(Z_STRVAL_P(name),0);
}

PHP_METHOD(classext, setName) {
char *arg = NULL;
int arg_len;
zval *value, *self;

if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &arg, &arg_len) == FAILURE) {
WRONG_PARAM_COUNT;
}

self = getThis();

MAKE_STD_ZVAL(value);
ZVAL_STRINGL(value, arg, arg_len, 0);

SEPARATE_ZVAL_TO_MAKE_IS_REF(&value);
zend_update_property(Z_OBJCE_P(self), self, ZEND_STRL("username"), value TSRMLS_CC);

RETURN_TRUE;
}

const zend_function_entry classext_functions[] = {
PHP_ME(classext, __construct,     NULL,             ZEND_ACC_PUBLIC|ZEND_ACC_CTOR)
PHP_ME(classext, __destruct,      NULL,             ZEND_ACC_PUBLIC|ZEND_ACC_DTOR)
PHP_ME(classext, getName,          NULL,             ZEND_ACC_PUBLIC)
PHP_ME(classext, setName,          setName_args,     ZEND_ACC_PUBLIC)
{NULL, NULL, NULL}    /* Must be the last line in martin_functions[] */
};

PHP_MINIT_FUNCTION(classext)
{
zend_class_entry classext;
INIT_CLASS_ENTRY(classext, "Classext", classext_functions);
classext_ce = zend_register_internal_class_ex(&classext, NULL, NULL TSRMLS_CC);
/* 声明常量URL */
zend_declare_class_constant_stringl(classext_ce, ZEND_STRL("URL"), ZEND_STRL("http://www.google.com") TSRMLS_CC);
/* 声明私有成员变量 username
ZEND_STRL("username")等价于"username",sizeof("username")-1;详见zend.h */
zend_declare_property_null(classext_ce, ZEND_STRL("username"), ZEND_ACC_PRIVATE TSRMLS_CC);

return SUCCESS;
}

PHP_MSHUTDOWN_FUNCTION(classext)
{
return SUCCESS;
}

PHP_RINIT_FUNCTION(classext)
{
return SUCCESS;
}

PHP_RSHUTDOWN_FUNCTION(classext)
{
return SUCCESS;
}

PHP_MINFO_FUNCTION(classext)
{
php_info_print_table_start();
php_info_print_table_header(2, "classext support", "enabled");
php_info_print_table_header(2, "The Version", "1.0.2");
php_info_print_table_end();
}

zend_module_entry classext_module_entry = {
STANDARD_MODULE_HEADER,
"classext",
NULL,
PHP_MINIT(classext),
PHP_MSHUTDOWN(classext),
PHP_RINIT(classext),
PHP_RSHUTDOWN(classext),
PHP_MINFO(classext),
PHP_CLASSEXT_VERSION,
STANDARD_MODULE_PROPERTIES
};

#ifdef COMPILE_DL_CLASSEXT
ZEND_GET_MODULE(classext)
#endif

4.编译扩展；ps：记得把config.m4中的第10,12行dnl删掉

5.重启php环境，加载相应的扩展后，我们在php脚本中执行

<?php
$class = new classext();
$class->setName("xiaozong");
echo $class->getName();
?>

输出:xiaozong