$row) { if (empty($row)) { unset($rows[$n]); continue; } preg_match_all('/$(.*?)$/', $row, $matches); if ( ! empty($matches[1])) { foreach ($matches[1] as $index => $patterns) { $patterns = explode('|', $patterns); $pick = $patterns[array_rand($patterns)]; $row = str_replace($matches[0][$index], $pick, $row); } } $rows[$n] = $row; } // Pick a random string from source return $rows[array_rand($rows)]; } } new Random_Text;