auto complete com banco mysql?

Achei na internet um script autocomplete que busca as informações em um arquivo php porem utiliza um array para a exibição das opções gostaria de saber como faço pra inserir as informações a partir de um banco sql, segue abaixo o array do arquivo que exibe as opções.

$aUsers = array(
"Ädams, Egbert",
"Altman, Alisha",
"Archibald, Janna",
"Auman, Cody",
"Bagley, Sheree",
"Ballou, Wilmot",
"Bard, Cassian",
"Bash, Latanya",
"Beail, May",
"Black, Lux",
"Bloise, India",
"Blyant, Nora",
"Bollinger, Carter",
"Burns, Jaycob",
"Carden, Preston",
"Carter, Merrilyn",
"Christner, Addie",
"Churchill, Mirabelle",
"Conkle, Erin",
"Countryman, Abner",
"Courtney, Edgar",
"Cowher, Antony",
"Craig, Charlie",
"Cram, Zacharias",
"Cressman, Ted",
"Crissman, Annie",
"Davis, Palmer",
"Downing, Casimir",
"Earl, Missie",
"Eckert, Janele",
"Eisenman, Briar",
"Fitzgerald, Love",
"Fleming, Sidney",
"Fuchs, Bridger",
"Fulton, Rosalynne",
"Fye, Webster",
"Geyer, Rylan",
"Greene, Charis",
"Greif, Jem",
"Guest, Sarahjeanne",
"Harper, Phyllida",
"Hildyard, Erskine",
"Hoenshell, Eulalia",
"Isaman, Lalo",
"James, Diamond",
"Jenkins, Merrill",
"Jube, Bennett",
"Kava, Marianne",
"Kern, Linda",
"Klockman, Jenifer",
"Lacon, Quincy",
"Laurenzi, Leland",
"Leichter, Jeane",
"Leslie, Kerrie",
"Lester, Noah",
"Llora, Roxana",
"Lombardi, Polly",
"Lowstetter, Louisa",
"Mays, Emery",
"Mccullough, Bernadine",
"Mckinnon, Kristie",
"Meyers, Hector",
"Monahan, Penelope",
"Mull, Kaelea",
"Newbiggin, Osmond",
"Nickolson, Alfreda",
"Pawle, Jacki",
"Paynter, Nerissa",
"Pinney, Wilkie",
"Pratt, Ricky",
"Putnam, Stephanie",
"Ream, Terrence",
"Rumbaugh, Noelle",
"Ryals, Titania",
"Saylor, Lenora",
"Schofield, Denice",
"Schuck, John",
"Scott, Clover",
"Smith, Estella",
"Smothers, Matthew",
"Stainforth, Maurene",
"Stephenson, Phillipa",
"Stewart, Hyram",
"Stough, Gussie",
"Strickland, Temple",
"Sullivan, Gertie",
"Swink, Stefanie",
"Tavoularis, Terance",
"Taylor, Kizzy",
"Thigpen, Alwyn",
"Treeby, Jim",
"Trevithick, Jayme",
"Waldron, Ashley",
"Wheeler, Bysshe",
"Whishaw, Dodie",
"Whitehead, Jericho",
"Wilks, Debby",
"Wire, Tallulah",
"Woodworth, Alexandria",
"Zaun, Jillie"
);

$aInfo = array(
"Bedfordshire",
"Buckinghamshire",
"Cambridgeshire",
"Cheshire",
"Cornwall",
"Cumbria",
"Derbyshire",
"Devon",
"Dorset",
"Durham",
"East Sussex",
"Essex",
"Gloucestershire",
"Hampshire",
"Hertfordshire",
"Kent",
"Lancashire",
"Leicestershire",
"Lincolnshire",
"Norfolk",
"Northamptonshire",
"Northumberland",
"North Yorkshire",
"Nottinghamshire",
"Oxfordshire",
"Shropshire",
"Somerset",
"Staffordshire",
"Suffolk",
"Surrey",
"Warwickshire",
"West Sussex",
"Wiltshire",
"Worcestershire",
"Durham",
"East Sussex",
"Essex",
"Gloucestershire",
"Hampshire",
"Hertfordshire",
"Kent",
"Lancashire",
"Leicestershire",
"Lincolnshire",
"Norfolk",
"Northamptonshire",
"Northumberland",
"North Yorkshire",
"Nottinghamshire",
"Oxfordshire",
"Shropshire",
"Somerset",
"Staffordshire",
"Suffolk",
"Surrey",
"Warwickshire",
"West Sussex",
"Wiltshire",
"Worcestershire",
"Durham",
"East Sussex",
"Essex",
"Gloucestershire",
"Hampshire",
"Hertfordshire",
"Kent",
"Lancashire",
"Leicestershire",
"Lincolnshire",
"Norfolk",
"Northamptonshire",
"Northumberland",
"North Yorkshire",
"Nottinghamshire",
"Oxfordshire",
"Shropshire",
"Somerset",
"Staffordshire",
"Suffolk",
"Surrey",
"Warwickshire",
"West Sussex",
"Wiltshire",
"Worcestershire",
"Durham",
"East Sussex",
"Essex",
"Gloucestershire",
"Hampshire",
"Hertfordshire",
"Kent",
"Lancashire",
"Leicestershire",
"Lincolnshire",
"Norfolk",
"Northamptonshire",
"Northumberland",
"North Yorkshire",
"Nottinghamshire"
);