Description:
------------
_ADD_MAGIC_METHOD in zend_compile.c identifies "serialize_func" and "unserialize_func" as magic methods and copies them to ce->serialize_func and ce->unserialize_func.

The correct names are "serialize" and "unserialize". These names could be changed, or, better yet, those two lines should be deleted because the methods serialize and unserialize are only relevant if the class implements Serializable (or, more precisely, if ce->serialize and ce->unserialize are zend_user_serialize and zend_user_unserialize, respectively, and in any case ce->serialize_func and ce->unserialize_func work only as a lazy cache.

Test script:
---------------
<?php
trait A {
function serialize_func() { return "serialize_func"; }
function serialize() { return "serialize"; }
function unserialize($foo) {}
}
class B implements Serializable { use A; }
echo serialize(new B);

Expected result:
----------------
C:1:"B":9:{serialize}

Actual result:
--------------
C:1:"B":14:{serialize_func}