PHP array_replace without creating keys

Question

I am trying to overwrite the elements of one array with values from another – without creating additional elements in the process.

For example:

Answer 1

I can't think of a built in method for that, however, it would be trivial with a loop and array_key_exists.

foreach( $replace as $k => $v )
{
   if ( array_key_exists( $k, $base ) )
      $base[ $k ] = $v;
}