Accessing static trait property %s::$%s is deprecated, it should only be accessed on a class using the trait¶

Description¶

Traits should not be used as standalone structure, but rather as a part of a class. Even for class agnostic structures, such as constants or static properties, they should be accessed via any class that uses them.

Example¶

<?php

trait T {
     public static $property = 1;
}

echo T::$property;
T::$property = 2;

?>

Literal Examples¶

Accessing static trait property T::$property is deprecated, it should only be accessed on a class using the trait

Solutions¶

Find a class that use the trait, and then, access the static property from there.
Create a class that only use the trait, and use it. An anonymous class would do.
Turn the trait into a class.