index.php

<?php
$sehirler = [
'01' => 'Adana',
'02' => 'Adıyaman',
'03' => 'Afyon',
'04' => 'Ağrı',
'05' => 'Amasya',
'06' => 'Ankara',
'07' => 'Antalya',
'08' => 'Artvin',
'09' => 'Aydın',
'10' => 'Balıkesir',
'11' => 'Bilecik',
'12' => 'Bingöl',
'13' => 'Bitlis',
'14' => 'Bolu',
'15' => 'Burdur',
'16' => 'Bursa',
'17' => 'Çanakkale',
'18' => 'Çankırı',
'19' => 'Çorum',
'20' => 'Denizli',
'21' => 'Diyarbakır',
'22' => 'Edirne',
'23' => 'Elazığ',
'24' => 'Erzincan',
'25' => 'Erzurum',
'26' => 'Eskişehir',
'27' => 'Gaziantep',
'28' => 'Giresun',
'29' => 'Gümüşhane',
'30' => 'Hakkari',
'31' => 'Hatay',
'32' => 'Isparta',
'33' => 'Mersin',
'34' => 'İstanbul',
'35' => 'İzmir',
'36' => 'Kars',
'37' => 'Kastamonu',
'38' => 'Kayseri',
'39' => 'Kırklareli',
'40' => 'Kırşehir',
'41' => 'Kocaeli',
'42' => 'Konya',
'43' => 'Kütahya',
'44' => 'Malatya',
'45' => 'Manisa',
'46' => 'Kahramanmaraş',
'47' => 'Mardin',
'48' => 'Muğla',
'49' => 'Muş',
'50' => 'Nevşehir',
'51' => 'Niğde',
'52' => 'Ordu',
'53' => 'Rize',
'54' => 'Sakarya',
'55' => 'Samsun',
'56' => 'Siirt',
'57' => 'Sinop',
'58' => 'Sivas',
'59' => 'Tekirdağ',
'60' => 'Tokat',
'61' => 'Trabzon',
'62' => 'Tunceli',
'63' => 'Şanlıurfa',
'64' => 'Uşak',
'65' => 'Van',
'66' => 'Yozgat',
'67' => 'Zonguldak',
'68' => 'Aksaray',
'69' => 'Bayburt',
'70' => 'Karaman',
'71' => 'Kırıkkale',
'72' => 'Batman',
'73' => 'Şırnak',
'74' => 'Bartın',
'75' => 'Ardahan',
'76' => 'Iğdır',
'77' => 'Yalova',
'78' => 'Karabük',
'79' => 'Kilis',
'80' => 'Osmaniye',
'81' => 'Düzce'
];