Why php iteration by reference returns a duplicate last record?
I'll guess that you're reusing &$item here and that you're stumbling across a behavior which has been reported as bug a thousand times but is the correct behavior of references, which is why the manual advises:
Reference of a $value and the last array element remain even after the foreach loop. It is recommended to destroy it by unset().
foreach($arrayOfJsonMods as &$item){ //TODO memcached votes}unset($item);