(PECL uopz >= 1.0.0)
uopz_extend — Extend a class at runtime
$class
   , string $parent
   )
 Makes class extend parent
  
classThe name of the class to extend
parentThe name of the class to inherit
Example #1 uopz_extend() example
<?php
class A {}
class B {}
uopz_extend(A::class, B::class);
var_dump(class_parents(A::class));
?>
The above example will output something similar to:
array(1) {
  ["B"]=>
  string(1) "B"
}