Как упростить меню выбора страны PHP/mysql

Question

У меня есть меню, в котором отображаются страны. Он смотрит на БД и, судя по значению в db, показывает выбранную опцию. Есть более простой способ сделать это прочь, чем:

if ($country == 'AG') {echo '<option value="AG" selected="selected">Antigua</option>';} 
else {echo '<option value="AG">Antigua</option>';}; 

if ($country == 'AR') {echo '<option value="AR" selected="selected">Argentina</option>';} 
else {echo '<option value="AR">Argentina</option>';}; 

if ($country == 'AM') {echo '<option value="AM" selected="selected">Armenia</option>';} 
else {echo '<option value="AM">Armenia</option>';}; 

if ($country == 'AW') {echo '<option value="AW" selected="selected">Aruba</option>';} 
else {echo '<option value="AW">Aruba</option>';}; 

if ($country == 'AU') {echo '<option value="AU" selected="selected">Australia</option>';} 
else {echo '<option value="AU">Australia</option >';}; 

if ($country == 'AT') {echo '<option value="AT" selected="selected">Austria</option>';} 
else {echo '<option value="AT">Austria</option>';}; 

if ($country == 'AZ') {echo '<option value="AZ" selected="selected">Azerbaijan</option>';} 
else {echo '<option value="AZ">Azerbaijan</option>';}; 

if ($country == 'BS') {echo '<option value="BS" selected="selected">Bahamas</option>';} 
else {echo '<option value="BS">Bahamas</option>';}; 

if ($country == 'BH') {echo '<option value="BH" selected="selected">Bahrain</option>';} 
else {echo '<option value="BH">Bahrain</option>';}; 

Есть много стран, и сделать это было бы безумием не так ли ????

Answer 1

Всякий раз, когда у вас есть много кода, что делать практически то же самое, это знак того, чтобы использовать цикл или функцию вместо перезаписи тысяч строк кода.

Как Майкл Б. заметил, что легкий путь - использовать массив и простой цикл, чтобы отобразить этот список и отметить правильный выбранный элемент.

$countries = array(
    'us' => 'United States of America', 
    'de' => 'Germany', 
    'pl' => 'Poland', 
    'fr' => 'France', 
    ... 
); 

foreach ($countires as $code => $name) { 
    echo '<option value="' . $code . '" ' . ($country == $code ? 'selected="selected"' : null) . '>' . $name . '</option>'; 
} 

Answer 2

Может быть что-то, как это будет работает:

$myCountry = "PL"; 

foreach ($countries as $country) { 
    echo '<option value = "'BH'"' 

    if ($country == $myCountry) {echo ' selected="selected"';} 

    echo '>Bahrain</option>'; 
} 

Где $countries является массивом или записей со всеми данными странами.

В зависимости от типа $countries необходимо заменить данные Бахрейна в приведенном выше примере данными, полученными от $countries.

Answer 3

Да, это было бы, прочитайте DRY principle. Итерация через результирующие страны и проверить внутри цикла, если выбрана эта страна, как так:

$selected_value = 'AG'; // set to stored preference or something 
foreach ($countries as $code => $country) { 
    echo '<option value="' . htmlspecialchars($code) . '"'; 
    if ($code == $selected_value) { 
    echo ' selected="selected"'; 
    } 
    echo '>' . htmlspecialchars($country) . '</option>'; 
} 

Answer 4

Что-то вроде:

$countries = array('AG' => 'Antigua', 'AR' => 'Argentina', ...); 

foreach($countries as $code => $name) { 
    $selected = ($country == $code) ? 'selected="selected"' : ''; 
    echo '<option value="' . $code . '"' . $selected . ' >' . $name . '</option>'; 
} 

Answer 5

Пусть $countries будет массивом стран из базы данных. Пусть заданное значение страна находится внутри переменной $country

foreach($countries as $value) 
{ 
    if($country == $value['code']) 
     echo '<option value="' . $value['code'] .'" selected="selected">'. $value['name'] . '</option'; 
    else 
     echo '<option value="' . $value['code'] . '">' . $value['name'] . '</option>'; 
} 

Answer 6

   <?php if($country=" ") { ?> 
        <option value="">Select Country</option> 
        <?php } else { ?> 
        <option value=""><?php echo $country; ?></option> 
       <?php } ?> 

       <option value="Afghanistan">Afghanistan</option> 
       <option value="Albania">Albania</option> 
       <option value="Algeria">Algeria</option> 
       <option value="American Samoa">American Samoa</option> 
       <option value="Andorra">Andorra</option> 
       <option value="Angola">Angola</option> 
       <option value="Anguilla">Anguilla</option> 
       <option value="Antigua &amp; Barbuda">Antigua &amp; Barbuda</option> 
       <option value="Argentina">Argentina</option> 
       <option value="Armenia">Armenia</option> 
       <option value="Aruba">Aruba</option> 
       <option value="Australia">Australia</option> 
       <option value="Austria">Austria</option> 
       <option value="Azerbaijan">Azerbaijan</option> 
       <option value="Bahamas">Bahamas</option> 
       <option value="Bahrain">Bahrain</option> 
       <option value="Bangladesh">Bangladesh</option> 
       <option value="Barbados">Barbados</option> 
       <option value="Belarus">Belarus</option> 
       <option value="Belgium">Belgium</option> 
       <option value="Belize">Belize</option> 
       <option value="Benin">Benin</option> 
       <option value="Bermuda">Bermuda</option> 
       <option value="Bhutan">Bhutan</option> 
       <option value="Bolivia">Bolivia</option> 
       <option value="Bonaire">Bonaire</option> 
       <option value="Bosnia &amp; Herzegovina">Bosnia &amp; Herzegovina</option> 
       <option value="Botswana">Botswana</option> 
       <option value="Brazil">Brazil</option> 
       <option value="British Indian Ocean Ter">British Indian Ocean Ter</option> 
       <option value="Brunei">Brunei</option> 
       <option value="Bulgaria">Bulgaria</option> 
       <option value="Burkina Faso">Burkina Faso</option> 
       <option value="Burundi">Burundi</option> 
       <option value="Cambodia">Cambodia</option> 
       <option value="Cameroon">Cameroon</option> 
       <option value="Canada">Canada</option> 
       <option value="Canary Islands">Canary Islands</option> 
       <option value="Cape Verde">Cape Verde</option> 
       <option value="Cayman Islands">Cayman Islands</option> 
       <option value="Central African Republic">Central African Republic</option> 
       <option value="Chad">Chad</option> 
       <option value="Channel Islands">Channel Islands</option> 
       <option value="Chile">Chile</option> 
       <option value="China">China</option> 
       <option value="Christmas Island">Christmas Island</option> 
       <option value="Cocos Island">Cocos Island</option> 
       <option value="Colombia">Colombia</option> 
       <option value="Comoros">Comoros</option> 
       <option value="Congo">Congo</option> 
       <option value="Cook Islands">Cook Islands</option> 
       <option value="Costa Rica">Costa Rica</option> 
       <option value="Cote D'Ivoire">Cote D'Ivoire</option> 
       <option value="Croatia">Croatia</option> 
       <option value="Cuba">Cuba</option> 
       <option value="Curacao">Curacao</option> 
       <option value="Cyprus">Cyprus</option> 
       <option value="Czech Republic">Czech Republic</option> 
       <option value="Denmark">Denmark</option> 
       <option value="Djibouti">Djibouti</option> 
       <option value="Dominica">Dominica</option> 
       <option value="Dominican Republic">Dominican Republic</option> 
       <option value="East Timor">East Timor</option> 
       <option value="Ecuador">Ecuador</option> 
       <option value="Egypt">Egypt</option> 
       <option value="El Salvador">El Salvador</option> 
       <option value="Equatorial Guinea">Equatorial Guinea</option> 
       <option value="Eritrea">Eritrea</option> 
       <option value="Estonia">Estonia</option> 
       <option value="Ethiopia">Ethiopia</option> 
       <option value="Falkland Islands">Falkland Islands</option> 
       <option value="Faroe Islands">Faroe Islands</option> 
       <option value="Fiji">Fiji</option> 
       <option value="Finland">Finland</option> 
       <option value="France">France</option> 
       <option value="French Guiana">French Guiana</option> 
       <option value="French Polynesia">French Polynesia</option> 
       <option value="French Southern Ter">French Southern Ter</option> 
       <option value="Gabon">Gabon</option> 
       <option value="Gambia">Gambia</option> 
       <option value="Georgia">Georgia</option> 
       <option value="Germany">Germany</option> 
       <option value="Ghana">Ghana</option> 
       <option value="Gibraltar">Gibraltar</option> 
       <option value="Great Britain">Great Britain</option> 
       <option value="Greece">Greece</option> 
       <option value="Greenland">Greenland</option> 
       <option value="Grenada">Grenada</option> 
       <option value="Guadeloupe">Guadeloupe</option> 
       <option value="Guam">Guam</option> 
       <option value="Guatemala">Guatemala</option> 
       <option value="Guinea">Guinea</option> 
       <option value="Guyana">Guyana</option> 
       <option value="Haiti">Haiti</option> 
       <option value="Hawaii">Hawaii</option> 
       <option value="Honduras">Honduras</option> 
       <option value="Hong Kong">Hong Kong</option> 
       <option value="Hungary">Hungary</option> 
       <option value="Iceland">Iceland</option> 
       <option value="India">India</option> 
       <option value="Indonesia">Indonesia</option> 
       <option value="Iran">Iran</option> 
       <option value="Iraq">Iraq</option> 
       <option value="Ireland">Ireland</option> 
       <option value="Isle of Man">Isle of Man</option> 
       <option value="Israel">Israel</option> 
       <option value="Italy">Italy</option> 
       <option value="Jamaica">Jamaica</option> 
       <option value="Japan">Japan</option> 
       <option value="Jordan">Jordan</option> 
       <option value="Kazakhstan">Kazakhstan</option> 
       <option value="Kenya">Kenya</option> 
       <option value="Kiribati">Kiribati</option> 
       <option value="Korea North">Korea North</option> 
       <option value="Korea South">Korea South</option> 
       <option value="Kuwait">Kuwait</option> 
       <option value="Kyrgyzstan">Kyrgyzstan</option> 
       <option value="Laos">Laos</option> 
       <option value="Latvia">Latvia</option> 
       <option value="Lebanon">Lebanon</option> 
       <option value="Lesotho">Lesotho</option> 
       <option value="Liberia">Liberia</option> 
       <option value="Libya">Libya</option> 
       <option value="Liechtenstein">Liechtenstein</option> 
       <option value="Lithuania">Lithuania</option> 
       <option value="Luxembourg">Luxembourg</option> 
       <option value="Macau">Macau</option> 
       <option value="Macedonia">Macedonia</option> 
       <option value="Madagascar">Madagascar</option> 
       <option value="Malaysia">Malaysia</option> 
       <option value="Malawi">Malawi</option> 
       <option value="Maldives">Maldives</option> 
       <option value="Mali">Mali</option> 
       <option value="Malta">Malta</option> 
       <option value="Marshall Islands">Marshall Islands</option> 
       <option value="Martinique">Martinique</option> 
       <option value="Mauritania">Mauritania</option> 
       <option value="Mauritius">Mauritius</option> 
       <option value="Mayotte">Mayotte</option> 
       <option value="Mexico">Mexico</option> 
       <option value="Midway Islands">Midway Islands</option> 
       <option value="Moldova">Moldova</option> 
       <option value="Monaco">Monaco</option> 
       <option value="Mongolia">Mongolia</option> 
       <option value="Montserrat">Montserrat</option> 
       <option value="Morocco">Morocco</option> 
       <option value="Mozambique">Mozambique</option> 
       <option value="Myanmar">Myanmar</option> 
       <option value="Nambia">Nambia</option> 
       <option value="Nauru">Nauru</option> 
       <option value="Nepal">Nepal</option> 
       <option value="Netherland Antilles">Netherland Antilles</option> 
       <option value="Netherlands (Holland, Europe)">Netherlands (Holland, Europe)</option> 
       <option value="Nevis">Nevis</option> 
       <option value="New Caledonia">New Caledonia</option> 
       <option value="New Zealand">New Zealand</option> 
       <option value="Nicaragua">Nicaragua</option> 
       <option value="Niger">Niger</option> 
       <option value="Nigeria">Nigeria</option> 
       <option value="Niue">Niue</option> 
       <option value="Norfolk Island">Norfolk Island</option> 
       <option value="Norway">Norway</option> 
       <option value="Oman">Oman</option> 
       <option value="Pakistan">Pakistan</option> 
       <option value="Palau Island">Palau Island</option> 
       <option value="Palestine">Palestine</option> 
       <option value="Panama">Panama</option> 
       <option value="Papua New Guinea">Papua New Guinea</option> 
       <option value="Paraguay">Paraguay</option> 
       <option value="Peru">Peru</option> 
       <option value="Philippines">Philippines</option> 
       <option value="Pitcairn Island">Pitcairn Island</option> 
       <option value="Poland">Poland</option> 
       <option value="Portugal">Portugal</option> 
       <option value="Puerto Rico">Puerto Rico</option> 
       <option value="Qatar">Qatar</option> 
       <option value="Republic of Montenegro">Republic of Montenegro</option> 
       <option value="Republic of Serbia">Republic of Serbia</option> 
       <option value="Reunion">Reunion</option> 
       <option value="Romania">Romania</option> 
       <option value="Russia">Russia</option> 
       <option value="Rwanda">Rwanda</option> 
       <option value="St Barthelemy">St Barthelemy</option> 
       <option value="St Eustatius">St Eustatius</option> 
       <option value="St Helena">St Helena</option> 
       <option value="St Kitts-Nevis">St Kitts-Nevis</option> 
       <option value="St Lucia">St Lucia</option> 
       <option value="St Maarten">St Maarten</option> 
       <option value="St Pierre &amp; Miquelon">St Pierre &amp; Miquelon</option> 
       <option value="St Vincent &amp; Grenadines">St Vincent &amp; Grenadines</option> 
       <option value="Saipan">Saipan</option> 
       <option value="Samoa">Samoa</option> 
       <option value="Samoa American">Samoa American</option> 
       <option value="San Marino">San Marino</option> 
       <option value="Sao Tome &amp; Principe">Sao Tome &amp; Principe</option> 
       <option value="Saudi Arabia">Saudi Arabia</option> 
       <option value="Senegal">Senegal</option> 
       <option value="Seychelles">Seychelles</option> 
       <option value="Sierra Leone">Sierra Leone</option> 
       <option value="Singapore">Singapore</option> 
       <option value="Slovakia">Slovakia</option> 
       <option value="Slovenia">Slovenia</option> 
       <option value="Solomon Islands">Solomon Islands</option> 
       <option value="Somalia">Somalia</option> 
       <option value="South Africa">South Africa</option> 
       <option value="Spain">Spain</option> 
       <option value="Sri Lanka">Sri Lanka</option> 
       <option value="Sudan">Sudan</option> 
       <option value="Suriname">Suriname</option> 
       <option value="Swaziland">Swaziland</option> 
       <option value="Sweden">Sweden</option> 
       <option value="Switzerland">Switzerland</option> 
       <option value="Syria">Syria</option> 
       <option value="Tahiti">Tahiti</option> 
       <option value="Taiwan">Taiwan</option> 
       <option value="Tajikistan">Tajikistan</option> 
       <option value="Tanzania">Tanzania</option> 
       <option value="Thailand">Thailand</option> 
       <option value="Togo">Togo</option> 
       <option value="Tokelau">Tokelau</option> 
       <option value="Tonga">Tonga</option> 
       <option value="Trinidad &amp; Tobago">Trinidad &amp; Tobago</option> 
       <option value="Tunisia">Tunisia</option> 
       <option value="Turkey">Turkey</option> 
       <option value="Turkmenistan">Turkmenistan</option> 
       <option value="Turks &amp; Caicos Is">Turks &amp; Caicos Is</option> 
       <option value="Tuvalu">Tuvalu</option> 
       <option value="Uganda">Uganda</option> 
       <option value="Ukraine">Ukraine</option> 
       <option value="United Arab Emirates">United Arab Emirates</option> 
       <option value="United Kingdom">United Kingdom</option> 
       <option value="United States of America">United States of America</option> 
       <option value="Uruguay">Uruguay</option> 
       <option value="Uzbekistan">Uzbekistan</option> 
       <option value="Vanuatu">Vanuatu</option> 
       <option value="Vatican City State">Vatican City State</option> 
       <option value="Venezuela">Venezuela</option> 
       <option value="Vietnam">Vietnam</option> 
       <option value="Virgin Islands (Brit)">Virgin Islands (Brit)</option> 
       <option value="Virgin Islands (USA)">Virgin Islands (USA)</option> 
       <option value="Wake Island">Wake Island</option> 
       <option value="Wallis &amp; Futana Is">Wallis &amp; Futana Is</option> 
       <option value="Yemen">Yemen</option> 
       <option value="Zaire">Zaire</option> 
       <option value="Zambia">Zambia</option> 
       <option value="Zimbabwe">Zimbabwe</option> 
       </select>