1.2.676. 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.

1.2.676.2. Connex PHP features¶

method

trait

method-collision

1.2.676.2.1. 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
Note	This issue may lint but will not run
Available in	Entreprise Edition, Exakat Cloud