Associative Array of States and Countries

This is exactly what I've been looking for! Thank you!

I took it a step further and made separate arrays for the states and provinces:

<?php
$country_list = array(
	'US'	=>	'United States',
	'AF'	=>	'Afghanistan',
	'AL'	=>	'Albania',
	'DZ'	=>	'Algeria',
	'AS'	=>	'American Samoa',
	'AD'	=>	'Andorra',
	'AO'	=>	'Angola',
	'AI'	=>	'Anguilla',
	'AQ'	=>	'Antarctica',
	'AG'	=>	'Antigua And Barbuda',
	'AR'	=>	'Argentina',
	'AM'	=>	'Armenia',
	'AW'	=>	'Aruba',
	'AU'	=>	'Australia',
	'AT'	=>	'Austria',
	'AZ'	=>	'Azerbaijan',
	'BS'	=>	'Bahamas',
	'BH'	=>	'Bahrain',
	'BD'	=>	'Bangladesh',
	'BB'	=>	'Barbados',
	'BY'	=>	'Belarus',
	'BE'	=>	'Belgium',
	'BZ'	=>	'Belize',
	'BJ'	=>	'Benin',
	'BM'	=>	'Bermuda',
	'BT'	=>	'Bhutan',
	'BO'	=>	'Bolivia',
	'BA'	=>	'Bosnia And Herzegowina',
	'BW'	=>	'Botswana',
	'BV'	=>	'Bouvet Island',
	'BR'	=>	'Brazil',
	'IO'	=>	'British Indian Ocean Territory',
	'BN'	=>	'Brunei Darussalam',
	'BG'	=>	'Bulgaria',
	'BF'	=>	'Burkina Faso',
	'BI'	=>	'Burundi',
	'KH'	=>	'Cambodia',
	'CM'	=>	'Cameroon',
	'CA'	=>	'Canada',
	'CV'	=>	'Cape Verde',
	'KY'	=>	'Cayman Islands',
	'CF'	=>	'Central African Republic',
	'TD'	=>	'Chad',
	'CL'	=>	'Chile',
	'CN'	=>	'China',
	'CX'	=>	'Christmas Island',
	'CC'	=>	'Cocos (Keeling) Islands',
	'CO'	=>	'Colombia',
	'KM'	=>	'Comoros',
	'CG'	=>	'Congo',
	'CD'	=>	'Congo, The Democratic Republic Of The',
	'CK'	=>	'Cook Islands',
	'CR'	=>	'Costa Rica',
	'CI'	=>	'Cote D\'Ivoire',
	'HR'	=>	'Croatia (Local Name: Hrvatska)',
	'CU'	=>	'Cuba',
	'CY'	=>	'Cyprus',
	'CZ'	=>	'Czech Republic',
	'DK'	=>	'Denmark',
	'DJ'	=>	'Djibouti',
	'DM'	=>	'Dominica',
	'DO'	=>	'Dominican Republic',
	'TP'	=>	'East Timor',
	'EC'	=>	'Ecuador',
	'EG'	=>	'Egypt',
	'SV'	=>	'El Salvador',
	'GQ'	=>	'Equatorial Guinea',
	'ER'	=>	'Eritrea',
	'EE'	=>	'Estonia',
	'ET'	=>	'Ethiopia',
	'FK'	=>	'Falkland Islands (Malvinas)',
	'FO'	=>	'Faroe Islands',
	'FJ'	=>	'Fiji',
	'FI'	=>	'Finland',
	'FR'	=>	'France',
	'FX'	=>	'France, Metropolitan',
	'GF'	=>	'French Guiana',
	'PF'	=>	'French Polynesia',
	'TF'	=>	'French Southern Territories',
	'GA'	=>	'Gabon',
	'GM'	=>	'Gambia',
	'GE'	=>	'Georgia',
	'DE'	=>	'Germany',
	'GH'	=>	'Ghana',
	'GI'	=>	'Gibraltar',
	'GR'	=>	'Greece',
	'GL'	=>	'Greenland',
	'GD'	=>	'Grenada',
	'GP'	=>	'Guadeloupe',
	'GU'	=>	'Guam',
	'GT'	=>	'Guatemala',
	'GN'	=>	'Guinea',
	'GW'	=>	'Guinea-Bissau',
	'GY'	=>	'Guyana',
	'HT'	=>	'Haiti',
	'HM'	=>	'Heard And Mc Donald Islands',
	'HN'	=>	'Honduras',
	'HK'	=>	'Hong Kong',
	'HU'	=>	'Hungary',
	'IS'	=>	'Iceland',
	'IN'	=>	'India',
	'ID'	=>	'Indonesia',
	'IR'	=>	'Iran (Islamic Republic Of)',
	'IQ'	=>	'Iraq',
	'IE'	=>	'Ireland',
	'IL'	=>	'Israel',
	'IT'	=>	'Italy',
	'JM'	=>	'Jamaica',
	'JP'	=>	'Japan',
	'JO'	=>	'Jordan',
	'KZ'	=>	'Kazakhstan',
	'KE'	=>	'Kenya',
	'KI'	=>	'Kiribati',
	'KP'	=>	'Korea, Democratic People\'S Republic Of',
	'KR'	=>	'Korea, Republic Of',
	'KW'	=>	'Kuwait',
	'KG'	=>	'Kyrgyzstan',
	'LA'	=>	'Lao People\'S Democratic Republic',
	'LV'	=>	'Latvia',
	'LB'	=>	'Lebanon',
	'LS'	=>	'Lesotho',
	'LR'	=>	'Liberia',
	'LY'	=>	'Libyan Arab Jamahiriya',
	'LI'	=>	'Liechtenstein',
	'LT'	=>	'Lithuania',
	'LU'	=>	'Luxembourg',
	'MO'	=>	'Macau',
	'MK'	=>	'Macedonia, Former Yugoslav Republic Of',
	'MG'	=>	'Madagascar',
	'MW'	=>	'Malawi',
	'MY'	=>	'Malaysia',
	'MV'	=>	'Maldives',
	'ML'	=>	'Mali',
	'MT'	=>	'Malta',
	'MH'	=>	'Marshall Islands, Republic of the',
	'MQ'	=>	'Martinique',
	'MR'	=>	'Mauritania',
	'MU'	=>	'Mauritius',
	'YT'	=>	'Mayotte',
	'MX'	=>	'Mexico',
	'FM'	=>	'Micronesia, Federated States Of',
	'MD'	=>	'Moldova, Republic Of',
	'MC'	=>	'Monaco',
	'MN'	=>	'Mongolia',
	'MS'	=>	'Montserrat',
	'MA'	=>	'Morocco',
	'MZ'	=>	'Mozambique',
	'MM'	=>	'Myanmar',
	'NA'	=>	'Namibia',
	'NR'	=>	'Nauru',
	'NP'	=>	'Nepal',
	'NL'	=>	'Netherlands',
	'AN'	=>	'Netherlands Antilles',
	'NC'	=>	'New Caledonia',
	'NZ'	=>	'New Zealand',
	'NI'	=>	'Nicaragua',
	'NE'	=>	'Niger',
	'NG'	=>	'Nigeria',
	'NU'	=>	'Niue',
	'NF'	=>	'Norfolk Island',
	'MP'	=>	'Northern Mariana Islands, Commonwealth of the',
	'NO'	=>	'Norway',
	'OM'	=>	'Oman',
	'PK'	=>	'Pakistan',
	'PW'	=>	'Palau, Republic of',
	'PA'	=>	'Panama',
	'PG'	=>	'Papua New Guinea',
	'PY'	=>	'Paraguay',
	'PE'	=>	'Peru',
	'PH'	=>	'Philippines',
	'PN'	=>	'Pitcairn',
	'PL'	=>	'Poland',
	'PT'	=>	'Portugal',
	'PR'	=>	'Puerto Rico',
	'QA'	=>	'Qatar',
	'RE'	=>	'Reunion',
	'RO'	=>	'Romania',
	'RU'	=>	'Russian Federation',
	'RW'	=>	'Rwanda',
	'KN'	=>	'Saint Kitts And Nevis',
	'LC'	=>	'Saint Lucia',
	'VC'	=>	'Saint Vincent And The Grenadines',
	'WS'	=>	'Samoa',
	'SM'	=>	'San Marino',
	'ST'	=>	'Sao Tome And Principe',
	'SA'	=>	'Saudi Arabia',
	'SN'	=>	'Senegal',
	'SC'	=>	'Seychelles',
	'SL'	=>	'Sierra Leone',
	'SG'	=>	'Singapore',
	'SK'	=>	'Slovakia (Slovak Republic)',
	'SI'	=>	'Slovenia',
	'SB'	=>	'Solomon Islands',
	'SO'	=>	'Somalia',
	'ZA'	=>	'South Africa',
	'GS'	=>	'South Georgia, South Sandwich Islands',
	'ES'	=>	'Spain',
	'LK'	=>	'Sri Lanka',
	'SH'	=>	'St. Helena',
	'PM'	=>	'St. Pierre And Miquelon',
	'SD'	=>	'Sudan',
	'SR'	=>	'Suriname',
	'SJ'	=>	'Svalbard And Jan Mayen Islands',
	'SZ'	=>	'Swaziland',
	'SE'	=>	'Sweden',
	'CH'	=>	'Switzerland',
	'SY'	=>	'Syrian Arab Republic',
	'TW'	=>	'Taiwan',
	'TJ'	=>	'Tajikistan',
	'TZ'	=>	'Tanzania, United Republic Of',
	'TH'	=>	'Thailand',
	'TG'	=>	'Togo',
	'TK'	=>	'Tokelau',
	'TO'	=>	'Tonga',
	'TT'	=>	'Trinidad And Tobago',
	'TN'	=>	'Tunisia',
	'TR'	=>	'Turkey',
	'TM'	=>	'Turkmenistan',
	'TC'	=>	'Turks And Caicos Islands',
	'TV'	=>	'Tuvalu',
	'UG'	=>	'Uganda',
	'UA'	=>	'Ukraine',
	'AE'	=>	'United Arab Emirates',
	'GB'	=>	'United Kingdom',
	'UM'	=>	'United States Minor Outlying Islands',
	'UY'	=>	'Uruguay',
	'UZ'	=>	'Uzbekistan',
	'VU'	=>	'Vanuatu',
	'VA'	=>	'Vatican City, State of the',
	'VE'	=>	'Venezuela',
	'VN'	=>	'Viet Nam',
	'VG'	=>	'Virgin Islands (British)',
	'VI'	=>	'Virgin Islands (U.S.)',
	'WF'	=>	'Wallis And Futuna Islands',
	'EH'	=>	'Western Sahara',
	'YE'	=>	'Yemen',
	'YU'	=>	'Yugoslavia',
	'ZM'	=>	'Zambia',
	'ZW'	=>	'Zimbabwe'
);

$us_states = array(
	'AL'	=>	'Alabama',
	'AK'	=>	'Alaska',
	'AS'	=>	'American Samoa',
	'AZ'	=>	'Arizona',
	'AR'	=>	'Arkansas',
	'AE'	=>	'Armed Forces - Europe',
	'AP'	=>	'Armed Forces - Pacific',
	'AA'	=>	'Armed Forces - USA/Canada',
	'CA'	=>	'California',
	'CO'	=>	'Colorado',
	'CT'	=>	'Connecticut',
	'DE'	=>	'Delaware',
	'DC'	=>	'District of Columbia',
	'FL'	=>	'Florida',
	'GA'	=>	'Georgia',
	'GU'	=>	'Guam',
	'HI'	=>	'Hawaii',
	'ID'	=>	'Idaho',
	'IL'	=>	'Illinois',
	'IN'	=>	'Indiana',
	'IA'	=>	'Iowa',
	'KS'	=>	'Kansas',
	'KY'	=>	'Kentucky',
	'LA'	=>	'Louisiana',
	'ME'	=>	'Maine',
	'MD'	=>	'Maryland',
	'MA'	=>	'Massachusetts',
	'MI'	=>	'Michigan',
	'MN'	=>	'Minnesota',
	'MS'	=>	'Mississippi',
	'MO'	=>	'Missouri',
	'MT'	=>	'Montana',
	'NE'	=>	'Nebraska',
	'NV'	=>	'Nevada',
	'NH'	=>	'New Hampshire',
	'NJ'	=>	'New Jersey',
	'NM'	=>	'New Mexico',
	'NY'	=>	'New York',
	'NC'	=>	'North Carolina',
	'ND'	=>	'North Dakota',
	'OH'	=>	'Ohio',
	'OK'	=>	'Oklahoma',
	'OR'	=>	'Oregon',
	'PA'	=>	'Pennsylvania',
	'PR'	=>	'Puerto Rico',
	'RI'	=>	'Rhode Island',
	'SC'	=>	'South Carolina',
	'SD'	=>	'South Dakota',
	'TN'	=>	'Tennessee',
	'TX'	=>	'Texas',
	'UT'	=>	'Utah',
	'VT'	=>	'Vermont',
	'VI'	=>	'Virgin Islands',
	'VA'	=>	'Virginia',
	'WA'	=>	'Washington',
	'WV'	=>	'West Virginia',
	'WI'	=>	'Wisconsin',
	'WY'	=>	'Wyoming'
);

$canadian_provinces = array(
	'AB'	=>	'Alberta',
	'BC'	=>	'British Columbia',
	'MB'	=>	'Manitoba',
	'NB'	=>	'New Brunswick',
	'NF'	=>	'Newfoundland and Labrador',
	'NT'	=>	'Northwest Territories',
	'NS'	=>	'Nova Scotia',
	'NU'	=>	'Nunavut',
	'ON'	=>	'Ontario',
	'PE'	=>	'Prince Edward Island',
	'QC'	=>	'Quebec',
	'SK'	=>	'Saskatchewan',
	'YT'	=>	'Yukon Territory'
); 

$aussie_states = array(
	'ACT'	=>	'Australian Capital Territory',
	'JBT'	=>	'Jervis Bay Territory',
	'NSW'	=>	'New South Wales',
	'NT'	=>	'Northern Territory',
	'QLD'	=>	'Queensland',
	'SA'	=>	'South Australia',
	'TAS'	=>	'Tasmania',
	'VIC'	=>	'Victoria',
	'WA'	=>	'Western Australia'
);
?>

Suggestion - encase in double quotes - you can lay off the escape '\' character.

AAT is the largest land area in the world so not nice to forget it

<?php
$aussie_states = array(
'AAT' => 'Australian Antarctic Territory',
'ACT' => 'Australian Capital Territory',
'JBT' => 'Jervis Bay Territory',
'NSW' => 'New South Wales',
'NT' => 'Northern Territory',
'QLD' => 'Queensland',
'SA' => 'South Australia',
'TAS' => 'Tasmania',
'VIC' => 'Victoria',
'WA' => 'Western Australia'
);
?>

Pointless creating one for the UK. The politicians change the boundaries and the names of counties - seemingly at every opportunity (gerrymandering).

$indian_all_states  = array (
 'AP' => 'Andhra Pradesh',
 'AR' => 'Arunachal Pradesh',
 'AS' => 'Assam',
 'BR' => 'Bihar',
 'CT' => 'Chhattisgarh',
 'GA' => 'Goa',
 'GJ' => 'Gujarat',
 'HR' => 'Haryana',
 'HP' => 'Himachal Pradesh',
 'JK' => 'Jammu & Kashmir',
 'JH' => 'Jharkhand',
 'KA' => 'Karnataka',
 'KL' => 'Kerala',
 'MP' => 'Madhya Pradesh',
 'MH' => 'Maharashtra',
 'MN' => 'Manipur',
 'ML' => 'Meghalaya',
 'MZ' => 'Mizoram',
 'NL' => 'Nagaland',
 'OR' => 'Odisha',
 'PB' => 'Punjab',
 'RJ' => 'Rajasthan',
 'SK' => 'Sikkim',
 'TN' => 'Tamil Nadu',
 'TR' => 'Tripura',
 'UK' => 'Uttarakhand',
 'UP' => 'Uttar Pradesh',
 'WB' => 'West Bengal',
 'AN' => 'Andaman & Nicobar',
 'CH' => 'Chandigarh',
 'DN' => 'Dadra and Nagar Haveli',
 'DD' => 'Daman & Diu',
 'DL' => 'Delhi',
 'LD' => 'Lakshadweep',
 'PY' => 'Puducherry',
)

28 Indian States list
?
$indian_states = array (
'AP' => 'Andhra Pradesh',
'AR' => 'Arunachal Pradesh',
'AS' => 'Assam',
'BR' => 'Bihar',
'CT' => 'Chhattisgarh',
'GA' => 'Goa',
'GJ' => 'Gujarat',
'HR' => 'Haryana',
'HP' => 'Himachal Pradesh',
'JK' => 'Jammu & Kashmir',
'JH' => 'Jharkhand',
'KA' => 'Karnataka',
'KL' => 'Kerala',
'MP' => 'Madhya Pradesh',
'MH' => 'Maharashtra',
'MN' => 'Manipur',
'ML' => 'Meghalaya',
'MZ' => 'Mizoram',
'NL' => 'Nagaland',
'OR' => 'Odisha',
'PB' => 'Punjab',
'RJ' => 'Rajasthan',
'SK' => 'Sikkim',
'TN' => 'Tamil Nadu',
'TR' => 'Tripura',
'UK' => 'Uttarakhand',
'UP' => 'Uttar Pradesh',
'WB' => 'West Bengal',
);

7 Union Territory
?
$indian_union_territory = array (
'AN' => 'Andaman & Nicobar',
'CH' => 'Chandigarh',
'DN' => 'Dadra and Nagar Haveli',
'DD' => 'Daman & Diu',
'DL' => 'Delhi',
'LD' => 'Lakshadweep',
'PY' => 'Puducherry',
);