<pre>
<?php
if(isset($_GET['location'])){
  $location=trim($_GET['location']);
  $arr=retcszarr($location);
    echo "location=$location<hr>".print_r($arr,true);
}
function retcszarr($loc){
  $usstatenames=array('ALABAMA','ALASKA','AMERICAN SAMOA','ARIZONA','ARKANSAS','CALIFORNIA','COLORADO','CONNECTICUT','DELAWARE','DISTRICT OF COLUMBIA','FEDERATED STATES OF MICRONESIA','FLORIDA','GEORGIA','GUAM','HAWAII','IDAHO','ILLINOIS','INDIANA','IOWA','KANSAS','KENTUCKY','LOUISIANA','MAINE','MARSHALL ISLANDS','MARYLAND','MASSACHUSETTS','MICHIGAN','MINNESOTA','MISSISSIPPI','MISSOURI','MONTANA','NEBRASKA','NEVADA','NEW HAMPSHIRE','NEW JERSEY','NEW MEXICO','NEW YORK','NORTH CAROLINA','NORTH DAKOTA','NORTHERN MARIANA ISLANDS','OHIO','OKLAHOMA','OREGON','PALAU','PENNSYLVANIA','PUERTO RICO','RHODE ISLAND','SOUTH CAROLINA','SOUTH DAKOTA','TENNESSEE','TEXAS','UTAH','VERMONT','VIRGIN ISLANDS','VIRGINIA','WASHINGTON','WEST VIRGINIA','WISCONSIN','WYOMING');
  $usstateabbrs=array('AL','AK','AS','AZ','AR','CA','CO','CT','DE','DC','FM','FL','GA','GU','HI','ID','IL','IN','IA','KS','KY','LA','ME','MH','MD','MA','MI','MN','MS','MO','MT','NE','NV','NH','NJ','NM','NY','NC','ND','MP','OH','OK','OR','PW','PA','PR','RI','SC','SD','TN','TX','UT','VT','VI','VA','WA','WV','WI','WY');
    if(strpos($loc,',')!==false){
      $parts=array_map('trim',explode(',',$loc));
        $location['city']=strtoupper($parts[0]);
      preg_match('/([^ ]*)(?: +([^ ]+))?/',$parts[1],$statezip);
      if(isset($statezip[1])){
        $location['state']=strtoupper($statezip[1]);
      }
    if(isset($statezip[2])){
        $location['zip']=$statezip[2];
      }
    } else {
        $parts=array_map('trim',explode(' ',$loc));
      while(count($parts)>0){
            $part=strtoupper(array_pop($parts));
            if(in_array($part,$usstatenames)){
            $location['state']=$part;
          } elseif (in_array($part,$usstateabbrs)){
            $location['state']=$usstatenames[array_search($part,$usstateabbrs)];
          } elseif (preg_match('/\d+(?:-\d+)?/',$part,$zip)){
            $location['zip']=$zip[0];
          } else {
                $location['city']=strtoupper(implode(' ',$parts)." $part");
              break;
            }
      }
  }
    ksort($location);
    return $location;
}
?>