我使用zend_declare_class_constant_stringl
宏来声明一个常量属性,但我不知道如何读取常量?
声明代码:
zend_declare_class_constant_stringl(myclass_ce,ZEND_STRL("WEL"),ZEND_STRL("welcome\n") TSRMLS_CC);
我想使用zend_read_property
或zend_read_static_property
来读取常量属性,但它不起作用!
(1):
我使用zend_read_static_property
:
ZEND_METHOD(myclass,getName){
zval *name;
char *str;
zend_class_entry *ce;
ce=Z_OBJCE_P(getThis());
name=zend_read_static_property(ce,ZEND_STRL("name"),0 TSRMLS_CC);
str=Z_STRVAL_P(name);
RETURN_STRINGL(str,Z_STRLEN_P(name),1);
}
[root @ localhost myext] #php -f /var/www/html/myclass.php
Notice: Undefined property: myclass::$WEL in /var/www/html/myclass.php on line 3
(null)PHP Fatal error: Access to undeclared static property: myclass::$name in /var/www/html/myclass.php on line 5
(2)我使用zend_read_property:
ZEND_METHOD(myclass,getName){
zval *name;
char *str;
zend_class_entry *ce;
ce=Z_OBJCE_P(getThis());
name=zend_read_property(ce,getThis(),ZEND_STRL("name"),0 TSRMLS_CC);
str=Z_STRVAL_P(name);
RETURN_STRINGL(str,Z_STRLEN_P(name),1);
}
[root @ localhost myext] #php -f /var/www/html/myclass.php
Notice: Undefined property: myclass::$WEL in /var/www/html/myclass.php on line 3
(null)silenceperPHP Fatal error: Access to undeclared static property: myclass::$BYE in Unknown on line 0
答案 0 :(得分:2)
zval c;
if (zend_get_constant_ex(ZEND_STRL("ClassName::CONSTANT_NAME"), &c, NULL, 0 TSRMLS_CC) == SUCCESS) {
// ...
}
NULL
是执行提取的类范围(如果你想使用像self
这样的东西)。 0
是标志,例如ZEND_FETCH_CLASS_SILENT
。