在另一个类的变量中调用一个类的常量
我想知道 PHP 是否有可能执行以下操作；
<?php
class boo {
static public $myVariable;
public function __construct ($variable) {
self::$myVariable = $variable;
}
}
class foo {
public $firstVar;
public $secondVar;
public $anotherClass;
public function __construct($configArray) {
$this->firstVar = $configArray['firstVal'];
$this->secondVar= $configArray['secondVar'];
$this->anotherClass= new boo($configArray['thirdVal']);
}
}
$classFoo = new foo (array('firstVal'=>'1st Value', 'secondVar'=>'2nd Value', 'thirdVal'=>'Hello World',));
echo $classFoo->anotherClass::$myVariable;
?>
预期输出： Hello World
我收到以下错误； 解析错误：语法错误，意外的T_PAAMAYIM_NEKUDOTAYIM
我用Google搜索了一下，它与$classFoo->anotherClass::$myVariable中的冒号（双点）有关code>
我不想费尽心思去改变我的其他类。无论如何，这个问题有解决办法吗？
提前感谢您的帮助。
PS 我只是不想为此浪费几个小时来寻找解决方法。昨天我已经花了 2.5 个小时来更改几乎整个 Jquery，因为客户想要更改，今天早上我被要求收回更改，因为他们不想使用它（他们改变了主意）。我现在只是想避免发生重大变化。
I was wondering if there is any possibility in PHP to do following;
<?php
class boo {
static public $myVariable;
public function __construct ($variable) {
self::$myVariable = $variable;
}
}
class foo {
public $firstVar;
public $secondVar;
public $anotherClass;
public function __construct($configArray) {
$this->firstVar = $configArray['firstVal'];
$this->secondVar= $configArray['secondVar'];
$this->anotherClass= new boo($configArray['thirdVal']);
}
}
$classFoo = new foo (array('firstVal'=>'1st Value', 'secondVar'=>'2nd Value', 'thirdVal'=>'Hello World',));
echo $classFoo->anotherClass::$myVariable;
?>
Expected OUTPUT : Hello World
I am getting following error; Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM
I Googled and it is related to colon (double dots) in $classFoo->anotherClass::$myVariable
I wouldn't like to go all the trouble to change my other classes. Is there anyway around this problem?
Thank you for your help in advance.
P.S. I just didn't want to lose few hours on this to find a way around. I already spent yesterday 2.5 hours to change almost whole Jquery because customer wanted a change and today in the morning I was asked to take the changes back because they didn't want to use it (they changed their mind). I am just trying to avoid big changes right now.
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您需要执行以下操作：
不支持将表达式扩展为静态调用/常量的类名/对象（但支持扩展变量，如上所示）。
You need to do:
Expanding expressions to class names/objects for static calls/constants is not supported (but expanding variables, as shown above, is).
如果您不关心内存和执行速度，这是正确的。
看来参考会更好：
对我有用。
If you do not care about memory and execution speed, this is correct.
It seems that reference would be better:
Works for me.