PHP reference Class from variable with static method access

Question

Gives an Error:

$this->model::byUserPermission()

Leads to: syntax error, unexpected '::' (T_PAAMAYIM_NEKUDOTAYIM)

Works:

$facade = $this->model;
$facade::byUserPermission()

Is this a PHP Bug? Or can someone explain this to my, why that is happening (I am using php 5.6 and i am new to php. From my point of view, both are exactly the same). Thanks

Interesting. Maybe :: has a higher precedence than ->, in which case the code will be executed as $this->(model::byUserPermission()), which would be invalid, since calling a method on an undeclared constant doesn't make much sense. Can you try executing ($this->model)::byUserPermission()? I'd think that would evaluate things in the right order. — GolezTrol
– GolezTrol, Commented Sep 23, 2015 at 20:12
thanks for your help! however thats something I tested before posting and this gives the same error as above... and ($facade)::byUserPermission gives an error too. — Tim Schmidt
– Tim Schmidt, Commented Sep 23, 2015 at 20:19

Schleis · Accepted Answer · 2015-09-26 15:16:22Z

2

The problem is that this statement $this->model::byUserPermission() is ambiguous. And can be interpreted in multiple ways.

1) You could be trying to use the model property of the class that you are in to call a class's static method. As you are attempting in your question.

2) You could also mean you want to access the property of the class returned by the static function byUserPermission() in the model class.

edited Sep 26, 2015 at 15:16

answered Sep 23, 2015 at 20:28

Schleis

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