1.2.638. Locally Used Property In Trait

List of properties that are used in the trait where they are defined. A property should be used at least once in the trait of its definition.

<?php

trait foo {
    public $unused, $used;// property $unused is never used in this trait

    function bar() {
        $this->used++; // property $used is used in this method
    }
}

class X {
    use foo;
}

$foo = new X();
$foo->unused = 'here'; // property $unused is used outside the trait definition
?>

1.2.638.1. Specs

Short name	Traits/LocallyUsedProperty
Rulesets	All, Changed Behavior
Exakat since	1.3.5
PHP Version	All
Severity	Minor
Time To Fix	Slow (1 hour)
Precision	Very high
Features	trait, property
Available in	Entreprise Edition, Exakat Cloud