Plum IVR Support

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function AreaCodeLocalTime ($AreaCode){
// this function returns a timestamp suitable for updating a mysql database timestamp field
// with the current time for the originating area code/ Built for IVR programs.
// http://en.wikipedia.org/wiki/Zoneinfo basic information
// http://en.wikipedia.org/wiki/Daylight_saving more than you wanted to know
// http://www.greatdata.com/pdf/ac-timezone.pdf one N. America table
// http://www.asksam.com/ebooks/releases.asp?file=area_codes.ask N. America area code -> time zone
//
// http://www.bennetyee.org/ucsd-pages/area.html this is the one I used...
// area code to offset to timezone in a separate program to generate this statement
// to represent the area code as an index to tne array $ac.
// the putenv approach is from http://support.modwest.com/kb.phtml?qid=258 (merci beaucoup)
	$ac = array(52=>'Central',201=>'Eastern',202=>'Eastern',203=>'Eastern',204=>'Central',205=>'Central',206=>'Pacific',207=>'Eastern',208=>'Mountain',209=>'Pacific',210=>'Central',211=>'Central',212=>'Eastern',213=>'Pacific',214=>'Central',215=>'Eastern',216=>'Eastern',217=>'Central',218=>'Central',219=>'Central',224=>'Central',225=>'Central',226=>'Eastern',228=>'Central',229=>'Eastern',231=>'Eastern',234=>'Eastern',236=>'Eastern',239=>'Eastern',240=>'Eastern',242=>'Eastern',246=>'Central',248=>'Eastern',250=>'Pacific',251=>'Central',252=>'Eastern',253=>'Pacific',254=>'Central',256=>'Central',260=>'Eastern',262=>'Central',264=>'Central',267=>'Eastern',268=>'Central',269=>'Eastern',270=>'Central',276=>'Eastern',278=>'Eastern',281=>'Central',283=>'Eastern',284=>'Central',289=>'Eastern',301=>'Eastern',302=>'Eastern',303=>'Mountain',304=>'Eastern',305=>'Eastern',306=>'Central',307=>'Mountain',308=>'Central',309=>'Central',310=>'Pacific',311=>'Central',312=>'Central',313=>'Eastern',314=>'Central',315=>'Eastern',316=>'Central',317=>'Eastern',318=>'Central',319=>'Central',320=>'Central',321=>'Eastern',323=>'Pacific',325=>'Central',330=>'Eastern',331=>'Central',334=>'Central',336=>'Eastern',337=>'Central',339=>'Eastern',340=>'Central',341=>'Pacific',345=>'Eastern',347=>'Eastern',351=>'Eastern',352=>'Eastern',360=>'Pacific',361=>'Central',369=>'Pacific',380=>'Eastern',385=>'Mountain',386=>'Eastern',401=>'Eastern',402=>'Central',403=>'Mountain',404=>'Eastern',405=>'Central',406=>'Mountain',407=>'Eastern',408=>'Pacific',409=>'Central',410=>'Eastern',411=>'Central',412=>'Eastern',413=>'Eastern',414=>'Central',415=>'Pacific',416=>'Eastern',417=>'Central',418=>'Eastern',419=>'Eastern',423=>'Eastern',424=>'Pacific',425=>'Pacific',430=>'Central',432=>'Mountain',434=>'Eastern',435=>'Mountain',438=>'Eastern',440=>'Eastern',441=>'Central',442=>'Pacific',443=>'Eastern',450=>'Eastern',456=>'Central',464=>'Central',469=>'Central',470=>'Eastern',473=>'Central',475=>'Eastern',478=>'Eastern',479=>'Central',480=>'Mountain',484=>'Eastern',500=>'Central',501=>'Central',502=>'Eastern',503=>'Pacific',504=>'Central',505=>'Mountain',506=>'Central',507=>'Central',508=>'Eastern',509=>'Pacific',510=>'Pacific',511=>'Central',512=>'Central',513=>'Eastern',514=>'Eastern',515=>'Central',516=>'Eastern',517=>'Eastern',518=>'Eastern',519=>'Eastern',520=>'Mountain',530=>'Pacific',540=>'Eastern',541=>'Pacific',551=>'Eastern',555=>'Central',557=>'Central',559=>'Pacific',561=>'Eastern',562=>'Pacific',563=>'Central',564=>'Pacific',567=>'Eastern',570=>'Eastern',571=>'Eastern',573=>'Central',574=>'Eastern',575=>'Mountain',580=>'Central',585=>'Eastern',586=>'Eastern',600=>'Central',601=>'Central',602=>'Mountain',603=>'Eastern',604=>'Pacific',605=>'Central',606=>'Eastern',607=>'Eastern',608=>'Central',609=>'Eastern',610=>'Eastern',611=>'Central',612=>'Central',613=>'Eastern',614=>'Eastern',615=>'Central',616=>'Eastern',617=>'Eastern',618=>'Central',619=>'Pacific',620=>'Central',623=>'Mountain',626=>'Pacific',627=>'Pacific',628=>'Pacific',630=>'Central',631=>'Eastern',636=>'Central',641=>'Central',646=>'Eastern',647=>'Eastern',649=>'Eastern',650=>'Pacific',651=>'Central',660=>'Central',661=>'Pacific',662=>'Central',664=>'Central',669=>'Pacific',670=>'Central',671=>'Central',678=>'Eastern',679=>'Eastern',682=>'Central',684=>'Central',689=>'Eastern',700=>'Central',701=>'Central',702=>'Pacific',703=>'Eastern',704=>'Eastern',705=>'Eastern',706=>'Eastern',707=>'Pacific',708=>'Central',709=>'Central',710=>'Central',711=>'Central',712=>'Central',713=>'Central',714=>'Pacific',715=>'Central',716=>'Eastern',717=>'Eastern',718=>'Eastern',719=>'Mountain',720=>'Mountain',724=>'Eastern',727=>'Eastern',731=>'Central',732=>'Eastern',734=>'Eastern',737=>'Central',740=>'Eastern',747=>'Pacific',754=>'Eastern',757=>'Eastern',758=>'Central',760=>'Pacific',762=>'Eastern',763=>'Central',764=>'Pacific',765=>'Eastern',767=>'Central',769=>'Central',770=>'Eastern',772=>'Eastern',773=>'Central',774=>'Eastern',775=>'Pacific',778=>'Pacific',779=>'Central',780=>'Mountain',781=>'Eastern',784=>'Central',785=>'Central',786=>'Eastern',787=>'Central',800=>'Central',801=>'Mountain',802=>'Eastern',803=>'Eastern',804=>'Eastern',805=>'Pacific',806=>'Central',807=>'Eastern',808=>'Central',809=>'Central',810=>'Eastern',811=>'Central',812=>'Central',813=>'Eastern',814=>'Eastern',815=>'Central',816=>'Central',817=>'Central',818=>'Pacific',819=>'Eastern',822=>'Central',828=>'Eastern',829=>'Central',830=>'Central',831=>'Pacific',832=>'Central',833=>'Central',835=>'Eastern',843=>'Eastern',844=>'Central',845=>'Eastern',847=>'Central',848=>'Eastern',850=>'Central',855=>'Central',856=>'Eastern',857=>'Eastern',858=>'Pacific',859=>'Eastern',860=>'Eastern',862=>'Eastern',863=>'Eastern',864=>'Eastern',865=>'Eastern',866=>'Central',867=>'Eastern',868=>'Central',869=>'Central',870=>'Central',872=>'Central',876=>'Eastern',877=>'Central',878=>'Eastern',880=>'Central',881=>'Central',882=>'Central',888=>'Central',898=>'Central',900=>'Central',901=>'Central',902=>'Central',903=>'Central',904=>'Eastern',905=>'Eastern',906=>'Central',907=>'Central',908=>'Eastern',909=>'Pacific',910=>'Eastern',911=>'Central',912=>'Eastern',913=>'Central',914=>'Eastern',915=>'Mountain',916=>'Pacific',917=>'Eastern',918=>'Central',919=>'Eastern',920=>'Central',925=>'Pacific',927=>'Eastern',928=>'Mountain',931=>'Central',935=>'Pacific',936=>'Central',937=>'Eastern',939=>'Central',940=>'Central',941=>'Eastern',947=>'Eastern',949=>'Pacific',951=>'Pacific',952=>'Central',954=>'Eastern',956=>'Central',957=>'Mountain',959=>'Eastern',970=>'Mountain',971=>'Pacific',972=>'Central',973=>'Eastern',975=>'Central',976=>'Central',978=>'Eastern',979=>'Central',980=>'Eastern',984=>'Eastern',985=>'Central',989=>'Eastern',999=>'Central');
	$tz = $ac[$AreaCode];
	if (!$tz){
		$tz = "Central";	
	}
	putenv("TZ=US/".$tz);
	return date("Y-m-d")." ".date("H:i:s"); 
}