1.2.673. Method Collision Traits

Two or more traits are included in the same class, and they have methods collisions.

Those collisions should be solved with a use expression. When they are not, PHP stops execution with a fatal error : Trait method M has not been applied, because there are collisions with other trait methods on C.

The code shown lints, but doesn’t execute.

<?php

trait A {
    public function A() {}
    public function M() {}
}

trait B {
    public function B() {}
    public function M() {}
}

class C {
    use  A, B;
}

class D {
    use  A, B{
        B::M insteadof A;
    };
}

?>

See also Traits.

1.2.673.1. Specs

Short name	Traits/MethodCollisionTraits
Rulesets	All, Analyze, Changed Behavior, LintButWontExec
Exakat since	1.4.2
PHP Version	All
Severity	Critical
Time To Fix	Quick (30 mins)
Precision	High
Features	method, trait, method-collision
Note	This issue may lint but will not run
Available in	Entreprise Edition, Exakat Cloud