How can I merge multiple separate arrays that are not included in an array? [duplicate]

Answer 1

The short answer to your question in code is:

$merged = call_user_func_array('array_merge', $unique_answer_title);

This is turning the one array you have into multiple parameters to array_merge() which accepts any number of parameters.

It had been previously (Sep 2010) outlined in:

• A better php array_merge

If you then complain about double values, this has been handled already as well:

• PHP merge array(s) and delete double values