使用 PHP 将 JSON 数据转换为 HTML 下拉列表

Question

如何使用 PHP 将此 XML/JSON 数据转换为 HTML select 下拉列表？

JSON/XML 数据：

{"CountryList":"<Countries><Country><Code>AF<\/Code><Name>Afghanistan<\/Name><\/Country><Country><Code>AL<\/Code><Name>Albania<\/Name><\/Country><Country><Code>DZ<\/Code><Name>Algeria<\/Name><\/Country><Country><Code>AS<\/Code><Name>American Samoa<\/Name><\/Country><Country><Code>AD<\/Code><Name>Andorra<\/Name><\/Country><Country><Code>AO<\/Code><Name>Angola<\/Name><\/Country><Country><Code>AI<\/Code><Name>Anguilla<\/Name><\/Country><Country><Code>AQ<\/Code><Name>Antarctica<\/Name><\/Country><Country><Code>AG<\/Code><Name>Antigua &amp; Barbuda<\/Name><\/Country><Country><Code>AR<\/Code><Name>Argentina<\/Name><\/Country><Country><Code>AM<\/Code><Name>Armenia<\/Name><\/Country><Country><Code>AW<\/Code><Name>Aruba<\/Name><\/Country><Country><Code>AU<\/Code><Name>Australia<\/Name><\/Country><Country><Code>AT<\/Code><Name>Austria<\/Name><\/Country><Country><Code>AZ<\/Code><Name>Azerbaijan<\/Name><\/Country><Country><Code>BS<\/Code><Name>Bahamas<\/Name><\/Country><Country><Code>BH<\/Code><Name>Bahrain<\/Name><\/Country><Country><Code>BD<\/Code><Name>Bangladesh<\/Name><\/Country><Country><Code>BB<\/Code><Name>Barbados<\/Name><\/Country><Country><Code>BY<\/Code><Name>Belarus (Belorussia)<\/Name><\/Country><\/Countries>","Error":{"ErrorCode":0,"ErrorMessage":""},"Status":1,"TokenId":"bdf0738c-7a47-410e-961a-52da9b5df935"}

所需的 HTML 输出：

<select>
    <option value="AF|Afghanistan">Afghanistan</option>
    <option value="AL|Albania">Albania</option>
    <option value="DZ|Algeria">Algeria</option>
    <option value="AS|American Samoa">American Samoa</option>
    <option value="AD|Andorra">Andorra</option>
    <option value="AO|Angola">Angola</option>
    <option value="AI|Anguilla">Anguilla</option>
    <option value="AQ|Antarctica">Antarctica</option>
    <option value="AG|Antigua & Barbuda">Antigua & Barbuda</option>
    <option value="AR|Argentina">Argentina</option>
    <option value="AM|Armenia">Armenia</option>
    <option value="AW|Aruba">Aruba</option>
    <option value="AU|Australia">Australia</option>
    <option value="AT|Austria">Austria</option>
    <option value="AZ|Azerbaijan">Azerbaijan</option>
    <option value="BS|Bahamas">Bahamas</option>
    <option value="BH|Bahrain">Bahrain</option>
    <option value="BD|Bangladesh">Bangladesh</option>
    <option value="BB|Barbados">Barbados</option>
    <option value="BY|Belarus (Belorussia)">Belarus (Belorussia)</option
</select>

---

解析后得到这样的数组

数组
(
[CountryList] => AFA阿富汗AL阿尔巴尼亚DZ阿尔及利亚AS美属萨摩亚AD安道尔AO安哥拉AI安圭拉AQ南极洲AG安提瓜和巴布达AR阿根廷A亚美尼亚AWA鲁巴AU澳大利亚ATA奥地利AZ阿塞拜疆BS巴哈马BHBahrainBDB孟加拉国BB巴巴多斯BY白俄罗斯（白俄罗斯）

[错误] => 数组
(
[错误代码] => 0
[错误消息] =>
)

[状态] => 1

[TokenId] => 5a5e32c4-77ee-4703-b0b1-4ff275ac61asw0 )

---

我在以下链接中看到的数据 https://drive.google.com/file/d/0B9VV_J4sKTatdWJGeHJkOVZzZ00/view?usp=sharing

Answer 1

试试这个可能对你有帮助。

解决方案

$json = json_decode($data);$source = new DOMDocument();
$source->loadXml($json->CountryList);
$xpath = new DOMXpath($source);
$target = new DOMDocument();
$options = $target->appendChild($target->createElement('select'));

foreach ($xpath->evaluate('/Countries/Country') as $country) {
    $countryCode = $xpath->evaluate('string(Code)', $country);
    $countryName = $xpath->evaluate('string(Name)', $country);
    $option = $options->appendChild(
        $target->createElement('option')
    );
    $option->setAttribute('value', $countryCode . "|" . $countryName);
    $option->appendChild($target->createTextNode($countryName));
}

$target->formatOutput = TRUE;
echo $target->saveXml($options);

输出：

    <select>
        <option value="AF|Afghanistan">Afghanistan</option>
        <option value="AL|Albania">Albania</option>
        <option value="DZ|Algeria">Algeria</option>
        <option value="AS|American Samoa">American Samoa</option>
        <option value="AD|Andorra">Andorra</option>
        <option value="AO|Angola">Angola</option>
        <option value="AI|Anguilla">Anguilla</option>
        <option value="AQ|Antarctica">Antarctica</option>
        <option value="AG|Antigua & Barbuda">Antigua & Barbuda</option>
        <option value="AR|Argentina">Argentina</option>
        <option value="AM|Armenia">Armenia</option>
        <option value="AW|Aruba">Aruba</option>
        <option value="AU|Australia">Australia</option>
        <option value="AT|Austria">Austria</option>
        <option value="AZ|Azerbaijan">Azerbaijan</option>
        <option value="BS|Bahamas">Bahamas</option>
        <option value="BH|Bahrain">Bahrain</option>
        <option value="BD|Bangladesh">Bangladesh</option>
        <option value="BB|Barbados">Barbados</option>
        <option value="BY|Belarus (Belorussia)">Belarus (Belorussia)</option
     </select>

Answer 2

您的 JSON 以 XML 形式包含国家/地区。所以你必须先解码 JSON：

$json = json_decode($data);

之后解析 XML：

$source = new DOMDocument();
$source->loadXml($json->CountryList);
$xpath = new DOMXpath($source);

您可以使用 DOM 生成目标 XML。创建一个目标文档并附加根节点。使用 Xpath 迭代国家并创建/附加选项元素。

$target = new DOMDocument();
$options = $target->appendChild($target->createElement('select'));

foreach ($xpath->evaluate('/Countries/Country') as $country) {
  $option = $options->appendChild(
    $target->createElement('option')
  );
  $option->setAttribute(
    'value', 
    $xpath->evaluate('string(Code)', $country)
  );
  $option->appendChild(
    $target->createTextNode(
      $xpath->evaluate('string(Name)', $country)
    )
  );
}

$target->formatOutput = TRUE;
echo $target->saveXml($options);

输出：

<select>
  <option value="AF">Afghanistan</option>
  <option value="AL">Albania</option>
  <option value="DZ">Algeria</option>
  <option value="AS">American Samoa</option>
  <option value="AD">Andorra</option>
  <option value="AO">Angola</option>
  <option value="AI">Anguilla</option>
  ...

Answer 3

您的数据不是 XML，而是 JSON 字符串。

如果可以访问原始XML数据，可以获得更好的结果。

顺便说一句，要解码您当前的数据，请使用json_decode：

$data = json_decode($data);

然后，创建一个匹配国家模式的模式并匹配$data->CountryList中的所有匹配项

$pattern = '{([^<]+)</Code>([^<]+)</Name></Country>}';
preg_match_all( $pattern, $data->CountryList, $matches );

此时，您可以通过foreach 循环输出您的<option> 列表：

foreach( $matches[0] as $key => $val )
{
    echo sprintf( '<option value="%s">%s</option>', $matches[1][$key], $matches[2][$key] );
}

eval.in demo

编辑：模式语法

{([^<]+)</Code>([^<]+)</Name></Country>}
 └──┬──┘└──┬──┘└──┬──┘└─┬─────────────┘
    │      │      │     └ 2nd and 3rd tags (not captured)
    │      │      └ One or more chars except ‘<’ (2nd captured group)
    │      └ 1st tag (not captured)
    └ One or more chars except ‘<’ (1st captured group)