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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
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1 回答 1

2

使用zend_get_constant_ex：

zval c;

if (zend_get_constant_ex(ZEND_STRL("ClassName::CONSTANT_NAME"), &c, NULL, 0 TSRMLS_CC) == SUCCESS) {
    // ...
}

这NULL是执行提取的类范围（如果你想使用类似的东西self）。是0标志，例如ZEND_FETCH_CLASS_SILENT。

于 2013-09-01T21:40:42.147 回答