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使用SimpleXML讀取XML資料 - PHP

SimpleXML是在php 5.0之後就是核心組成,所以是不需要額外安裝的。
(所以使用SimpleXML記得要檢查php版本喔!)

做個簡單的小範例,使用臺灣郵局 - 3+2碼郵遞區號XML檔部分資料
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<NewDataSet>
  <Zip32>
    <Zip5>10042</Zip5>
    <City>台北市</City>
    <Area>中正區</Area>
    <Road>秀山街</Road>
    <Scope></Scope>
  </Zip32>
</NewDataSet>

這時如果我們只想建立一個陣列,就是City->Area陣列,也就可以取得['台北市'][0] = ['中正區']
以下是範例程式碼
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<?php
$address = array();

$xml = simplexml_load_file("test.xml");

foreach($xml->children() as $zip){
    $city = trim((string)$zip->City);
    $area = trim((string)$zip->Area);

    $address[$city] = array($area);
}

var_dump($address);
?>


第7行與第8行為什麼要強制轉型成string,則是因為$zip->City取出來的值是物件,所以必須得轉型,否則是無法拿來作為key使用。

輸出結果如下
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array(1) {
  ["台北市"]=>
  array(1) {
    [0]=>
    string(9) "中正區"
  }
}


參考資料:

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