PHP array of continents in the world and their countries

world-continents.php

<?php

  $continents = [
      'Africa' =>  array('Algeria','Angola','Benin','Botswana','Burkina Faso','Burundi','Cabo Verde','Cameroon','Central African Republic','Chad','Comoros','Democratic Republic of the Congo','Republic of the Congo','Cote d\'Ivoire','Djibouti','Egypt','Equatorial Guinea','Eritrea','Ethiopia','Gabon','Gambia','Ghana','Guinea','Guinea Bissau','Kenya','Lesotho','Liberia','Libya','Madagascar','Malawi','Mali','Mauritania','Mauritius','Morocco','Mozambique','Namibia','Niger','Nigeria','Rwanda','Sao Tome and Principe','Senegal','Seychelles','Sierra Leone','Somalia','South Africa','South Sudan','Sudan','Swaziland','Tanzania','Togo','Tunisia','Uganda','Zambia','Zimbabwe'),
      'NorthAmerica' => array('Antigua and Barbuda','Bahamas','Barbados','Belize','Canada','Costa Rica','Cuba','Dominica','Dominican Republic','El Salvador','Grenada','Guatemala','Haiti','Honduras','Jamaica','Mexico','Nicaragua','Panama','Saint Kitts and Nevis','Saint Lucia','Saint Vincent and the Grenadines','Trinidad and Tobago','United States of America'),
      'SouthAmerica' => array('Argentina', 'Bolivia','Brazil','Chile','Colombia','Ecuador','Guyana','Paraguay','Peru','Suriname','Uruguay','Venezuela'),
      'Europe' => array('Albania','Andorra','Armenia','Austria','Azerbaijan','Belarus','Belgium','Bosnia and Herzegovina','Bulgaria','Croatia','Cyprus','Czech Republic','Denmark','Estonia','Finland','France','Georgia','Germany','Greece','Iceland','Ireland','Italy','Kazakhstan','Kosovo','Latvia','Liechtenstein','Lithuania','Luxembourg','Macedonia','Malta','Moldova','Monaco','Montenegro','Netherlands','Norway','Poland','Portugal','Romania','Russia','San Marino','Serbia','Slovakia','Slovenia','Spain','Sweden','Switzerland','Turkey','Ukraine','United Kingdom','Vatican City'),
      'Asia' => array('Armenia','Azerbaijan','Bahrain','Bangladesh','Bhutan','Brunei', 'Cambodia','China','Cyprus','Georgia','India','Indonesia','Iran','Iraq','Israel', 'Japan','Jordan','Kazakhstan','Kuwait','Kyrgyzstan','Laos','Lebanon','Malaysia','Maldives','Mongolia','Myanmar','Nepal','North Korea','Oman','Pakistan','Palestine','Philippines','Qatar','Russia','Saudi Arabia','Singapore','South Korea','Sri Lanka','Syria','Taiwan','Tajikistan','Thailand','Timor Leste','Turkey','Turkmenistan','United Arab Emirates','Uzbekistan','Vietnam','Yemen')
  ];

added ocean-pacific countries and also modified continent listing by adding middle-east
`<?php

$continents = [
'africa' => array('Algeria','Angola','Benin','Botswana','Burkina Faso','Burundi','Cabo Verde','Cameroon','Central African Republic','Chad','Comoros','Democratic Republic of the Congo','Republic of the Congo','Cote d'Ivoire','Djibouti','Equatorial Guinea','Eritrea','Ethiopia','Gabon','Gambia','Ghana','Guinea','Guinea Bissau','Kenya','Lesotho','Liberia','Libya','Madagascar','Malawi','Mali','Mauritania','Mauritius','Morocco','Mozambique','Namibia','Niger','Nigeria','Rwanda','Sao Tome and Principe','Senegal','Seychelles','Sierra Leone','Somalia','South Africa','South Sudan','Sudan','Swaziland','Tanzania','Togo','Tunisia','Uganda','Zambia','Zimbabwe'),
'north-america' => array('Antigua and Barbuda','Bahamas','Barbados','Belize','Canada','Costa Rica','Cuba','Dominica','Dominican Republic','El Salvador','Grenada','Guatemala','Haiti','Honduras','Jamaica','Mexico','Nicaragua','Panama','Saint Kitts and Nevis','Saint Lucia','Saint Vincent and the Grenadines','Trinidad and Tobago','United States of America'),
'south-america' => array('Argentina', 'Bolivia','Brazil','Chile','Colombia','Ecuador','Guyana','Paraguay','Peru','Suriname','Uruguay','Venezuela'),
'europe' => array('Albania','Andorra','Armenia','Austria','Azerbaijan','Belarus','Belgium','Bosnia and Herzegovina','Bulgaria','Croatia','Cyprus','Czech Republic','Denmark','Estonia','Finland','France','Georgia','Germany','Greece','Iceland','Ireland','Italy','Kazakhstan','Kosovo','Latvia','Liechtenstein','Lithuania','Luxembourg','Macedonia','Malta','Moldova','Monaco','Montenegro','Netherlands','Norway','Poland','Portugal','Romania','Russia','San Marino','Serbia','Slovakia','Slovenia','Spain','Sweden','Switzerland','Ukraine','United Kingdom','Vatican City'),
'asia' => array('Armenia','Azerbaijan','Bangladesh','Bhutan','Brunei', 'Cambodia','China','Georgia','India','Indonesia', 'Japan','Kazakhstan','Kyrgyzstan','Laos','Malaysia','Maldives','Mongolia','Myanmar','Nepal','North Korea','Pakistan','Philippines','Russia','Singapore','South Korea','Sri Lanka','Taiwan','Tajikistan','Thailand','Timor Leste','Turkmenistan','Uzbekistan','Vietnam'),
'middle-east' => array('Bahrain','Cyprus','Egypt','Iran','Iraq','Israel','Jordan','Kuwait','Lebanon','Oman','Palestine','Qatar','Saudi Arabia','Syria','Turkey','United Arab Emirates','Yemen'),
'ocean-pacific' => array('Australia','Federated Islands of Micronesia','Fiji','French Polynesia','Guam','Kiribati','Marshall Islands','Nauru','New Zealand','Paulau','Papua New Guinea','Samoa','Solomon Islands','Tonga','Tuvala','Vanuata')];`

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