<?php
$re = '/^(?:locality|suburb)(?:(?:-|_)?name)?$/im';
$str = 'locality
Locality
LocalityName
locality_name
locality-name
suburb
Suburb
SuburbName
suburb_name
suburb-name
locality_pid
locality_index
LocalityRef
street_locality_pid
street_suburb_pid
';
// Print the entire match result
?>
PD9waHAKCiRyZSA9ICcvXig/OmxvY2FsaXR5fHN1YnVyYikoPzooPzotfF8pP25hbWUpPyQvaW0nOwokc3RyID0gJ2xvY2FsaXR5CkxvY2FsaXR5CkxvY2FsaXR5TmFtZQpsb2NhbGl0eV9uYW1lCmxvY2FsaXR5LW5hbWUKc3VidXJiClN1YnVyYgpTdWJ1cmJOYW1lCnN1YnVyYl9uYW1lCnN1YnVyYi1uYW1lCmxvY2FsaXR5X3BpZApsb2NhbGl0eV9pbmRleApMb2NhbGl0eVJlZgpzdHJlZXRfbG9jYWxpdHlfcGlkCnN0cmVldF9zdWJ1cmJfcGlkCic7CgpwcmVnX21hdGNoX2FsbCgkcmUsICRzdHIsICRtYXRjaGVzKTsKCi8vIFByaW50IHRoZSBlbnRpcmUgbWF0Y2ggcmVzdWx0CnByaW50X3IoJG1hdGNoZXMpOwoKPz4=