<?php

$word = "'Ankara'da!?'";
echo trim(preg_replace_callback('~\b\'\b(*SKIP)(*F)|\s*(\p{P}+)\s*~u', function($m) {
	return ' ' . preg_replace('~\X(?=\X)~u', '$0 ', $m[1]) . ' ';
}, $word));