<?php
$patterns = ["are", "finite", "get", "er"];
$string = "You are definitely getting better today www.get.com";
$alternations = ''.implode('|', $patterns); $re = '(?<=\s)(?:are|finite|get|er)(?=\s)';
echo $string;
PD9waHAKJHBhdHRlcm5zID0gWyJhcmUiLCAiZmluaXRlIiwgImdldCIsICJlciJdOwokc3RyaW5nID0gIllvdSBhcmUgZGVmaW5pdGVseSBnZXR0aW5nIGJldHRlciB0b2RheSB3d3cuZ2V0LmNvbSI7CiRhbHRlcm5hdGlvbnMgPSAnJy5pbXBsb2RlKCd8JywgJHBhdHRlcm5zKTsKJHJlID0gJyg/PD1ccykoPzphcmV8ZmluaXRlfGdldHxlcikoPz1ccyknOwokc3RyaW5nID0gcHJlZ19yZXBsYWNlKCcjJy4kcmUuJyMnLCAnJywgJHN0cmluZyk7CiRzdHJpbmcgPSBwcmVnX3JlcGxhY2UoJyNcaHsyLH0jJywgJyAnLCAkc3RyaW5nKTsKZWNobyAkc3RyaW5nOw==