<?php

function getstatefromzip($zip5) {
  $allstates = array (
   AK9950099929, AL3500036999, AR7160072999, AR7550275505,
   AZ8500086599, CA9000096199, CO8000081699, CT0600006999,
   DC2000020099, DC2020020599, DE1970019999, FL3200033999,
   FL3410034999, GA3000031999, HI9670096798, HI9680096899,
   IA5000052999, ID8320083899, IL6000062999, IN4600047999,
   KS6600067999, KY4000042799, KY4527545275, LA7000071499,
   LA7174971749, MA0100002799, MD2033120331, MD2060021999,
   ME0380103801, ME0380403804, ME0390004999, MI4800049999,
   MN5500056799, MO6300065899, MS3860039799, MT5900059999,
   NC2700028999, ND5800058899, NE6800069399, NH0300003803,
   NH0380903899, NJ0700008999, NM8700088499, NV8900089899,
   NY0040000599, NY0639006390, NY0900014999, OH4300045999,
   OK7300073199, OK7340074999, OR9700097999, PA1500019699,
   RI0280002999, RI0637906379, SC2900029999, SD5700057799,
   TN3700038599, TN7239572395, TX7330073399, TX7394973949,
   TX7500079999, TX8850188599, UT8400084799, VA2010520199,
   VA2030120301, VA2037020370, VA2200024699, VT0500005999,
   WA9800099499, WI4993649936, WI5300054999, WV2470026899,
   WY8200083199);

  foreach($allstates as $ziprange) {
    if (($zip5 >= substr($ziprange, 2, 5)) && ($zip5 <= substr($ziprange,7,5))) {
     return substr($ziprange,0,2);
    }
  }
    
  return ;
}
?>

<? echo getstatefromzip(90210); ?>