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I need to call a static method of a class, but I only have a classname, not an instance of it. I am doing it this way.
$class = new "ModelName";
$items = $class::model()->findAll();
It works on my computer, but when I move to the server, it throws an unexpected T_PAAMAYIM_NEKUDOTAYIM, so I think it actually expects model to be a variable instead of a method.
PS: If it helps, it's Yii framework, so if there's another way to call the find() functions, it's ok to me.
Thanks in advance
554
Example Explained Here, we declare a static method: welcome(). Then, we call the static method by using the class name, double colon (::), and the method name (without creating an instance of the class first).
To add a static method to the class, static keyword is used. They can be invoked directly outside the class by using scope resolution operator (::) as follows: MyClass::test();
The static method can call without object while instance method can not be called without object.
In PHP 7, calling non-static methods statically is deprecated, and will generate an E_DEPRECATED warning. See Static methods (php.net) for details. In the following example, the method foo() is called as dynamic while actually it is static.
This is because your server runs a version of PHP earlier than 5.3.0, in which this syntax is not supported.
From the documentation on the scope resolution operator:
As of PHP 5.3.0, it's possible to reference the class using a variable. The variable's value can not be a keyword (e.g. self, parent and static).
In any case, you can always use call_user_func:
$class = "ModelName"; // the "new" in your example was a typo, right?
$items = call_user_func(array($class, 'model'))->findAll();
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