Trait nightmare

duplicate-trait-method.php

<?php                                                                           
                                                                                
trait A {                                                                       
    function f(  ) {                                                            
        return __METHOD__;                                                      
    }                                                                           
}                                                                               
                                                                                
class C {                                                                       
    use A {                                                                     
        f as x;                                                                 
        f as y;                                                                 
    }                                                                           
}                                                                               
                                                                                
$c = new C;                                                                     
var_dump( $c->x(), $c->y() );

remove-trait-method.php

<?php                                                                           
                                                                                
trait A {                                                                       
    function f() {                                                              
        return __METHOD__;                                                      
    }                                                                           
}                                                                               
                                                                                
trait B {                                                                       
    function f() {                                                              
        return __METHOD__;                                                      
    }                                                                           
}                                                                               
                                                                                
class C {                                                                       
    use A {                                                                     
        A::f insteadof B;                                                       
    }                                                                           
    use B {                                                                     
        B::f insteadof A;                                                       
    }                                                                           
}                                                                               
                                                                                
$c = new C;                                                                     
$c->f();