php class knowledge --- trait characteristics

# Since php class supports only single inheritance, but we need to use some of the outstanding characteristics of the class, and therefore have a trait 

<? Php 
trait under cpc #trait method can only use public 
{ 
   function trainning_hoaring () 
   { 
        echo " wailing child Hey ~ wailing children fed ~ " ; 
   } 
} 
trait CJ 
{ 
    function trainning_hoaring () 
    { 
        echo " eh Hey ~ ~ ~ " ; 
    } 
} 
class Me 
{ 
    use CPC, CJ {#use means that the structure of the above-defined trait 
        cj :: trainning_hoaring INSTEAD cpc;   # due cpc and cj is defined in the same manner, so if one of them is selected, it is necessary to use an expression 
        # trait insteadof using unused trait 
        cj :: trainning_hoaringAS cjhoaring; # CJ to trait trainning_hoaring from a characteristic alias cjhoaring

        :: trainning_hoaring cpc AS cpchoaring; # ditto role 
　　 } 
} 
$ cpc = new new Me (); $ cpc -> trainning_hoaring ();
 >?

Output:

Hey eh ~ ~ ~