问题描述
我想在一个公共静态函数中使用PHP函数，如下所示（我已经缩短了一些东西）：
I am trying to use a PHP function from within a public static function like so (I've shortened things a bit):
class MyClass {
public static function first_function() {
function inside_this() {
$some_var = self::second_function(); // doesnt work inside this function
}
// other code here...
} // End first_function
protected static function second_function() {
// do stuff
} // End second_function
} // End class PayPalDimesale
这是当我得到错误无法访问自己::当没有类范围活动。
That's when I get the error "Cannot access self:: when no class scope is active".
如果我在 inside_this 函数之外调用 second_function / p>
If I call second_function outside of the inside_this function, it works fine:
class MyClass {
public static function first_function() {
function inside_this() {
// some stuff here
}
$some_var = self::second_function(); // this works
} // End first_function
protected static function second_function() {
// do stuff
} // End second_function
} // End class PayPalDimesale
我需要做什么才能在 inside_this 函数中使用 second_function ？
What do I need to do to be able to use second_function from within the inside_this function?
推荐答案
这是因为 PHP中的所有函数都具有全局范围 - 即使它们被定义，
That is because All functions in PHP have the global scope - they can be called outside a function even if they were defined inside and vice versa.
所以你必须这样做：
function inside_this() {
$some_var = MyClass::second_function();
}
这篇关于当没有类范围处于活动状态时，无法访问self ::的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！