simpleXMLでchildren（）を実際に理解できない

Question

私は単純なopencalaisプロジェクトに取り組んでいます。子どもがカウントするカテゴリを動的に実現するために私のプログラムが必要でした。

私は、例のように発生した場合、子孫を処理する別の関数を記述しようとしていました。 （複数の企業/人/など）が、このコードはすべての世話をしたようです。それは私にいくつかのwork.Butを保存して以来、本当に良いことですが、私はPHPに新しいと私は子供のドキュメントを読んだが、カントはこれがどうなったのか理解しています。

コード：

$xml = simplexml_load_string("$response"); 
print_fr($xml); 

$categories = $xml->CalaisSimpleOutputFormat->children(); 
print_fr($categories); 

foreach($categories as $entities) { 
    $eName = $entities->getName(); 
    if($eName!== "Topics") { 
     echo "<br /> The Entity is -- \" ".$eName."\""; 
     echo "<br /> The Entity Name is -- \" ".$entities."\""; 
     echo "<br /> The Relevance Score is -- \" ".$entities['relevance']."\""; 
    } 
    else if($eName == "Topics") { 
     echo "Deal with topics later"; 
    } 
} 

O/P：何が起こっているのか、あなたのxmlファイルで

SimpleXMLElement Object 
(
    [Description] => SimpleXMLElement Object 
     (
      [allowDistribution] => false 
      [allowSearch] => false 
      [calaisRequestID] => a647072b-203c-cbb0-1319-045ba23774d2 
      [externalID] => SimpleXMLElement Object 
       (
        [0] => 
       ) 

      [id] => http://id.opencalais.com/ZwD-c-aYZMsFWaSXn2vWbw 
      [about] => http://d.opencalais.com/dochash-1/e12aabaf-1b01-3844-96bc-90238dae24dc 
      [docTitle] => SimpleXMLElement Object 
       (
       ) 

      [docDate] => 2007-09-15 
      [externalMetadata] => SimpleXMLElement Object 
       (
       ) 

      [submitter] => Calais REST Sample 
     ) 

    [CalaisSimpleOutputFormat] => SimpleXMLElement Object 
     (
      [Company] => Array 
       (
        [0] => Tensleep Corporation 
        [1] => International Star Inc. 
        [2] => XSTV Media Inc. 
        [3] => XSTV Corporation 
        [4] => Gerard Klauer Mattison 
        [5] => IDC 
       ) 

      [Event] => Array 
       (
        [0] => General or Shareholder Meeting 
        [1] => M&A 
       ) 

      [Position] => analyst 
      [City] => Shreveport 
      [Facility] => The Hilton Hotel 
      [Person] => Array 
       (
        [0] => David Bailey 
        [1] => Roger Kay 
       ) 

      [Topics] => SimpleXMLElement Object 
       (
        [Topic] => Business_Finance 
       ) 

     ) 

) 

SimpleXMLElement Object 
(
    [Company] => Array 
     (
      [0] => Tensleep Corporation 
      [1] => International Star Inc. 
      [2] => XSTV Media Inc. 
      [3] => XSTV Corporation 
      [4] => Gerard Klauer Mattison 
      [5] => IDC 
     ) 

    [Event] => Array 
     (
      [0] => General or Shareholder Meeting 
      [1] => M&A 
     ) 

    [Position] => analyst 
    [City] => Shreveport 
    [Facility] => The Hilton Hotel 
    [Person] => Array 
     (
      [0] => David Bailey 
      [1] => Roger Kay 
     ) 

    [Topics] => SimpleXMLElement Object 
     (
      [Topic] => Business_Finance 
     ) 

) 


The Entity is -- " Company" 
The Entity Name is -- " Tensleep Corporation" 
The Relevance Score is -- " 0.451" 
The Entity is -- " Company" 
The Entity Name is -- " International Star Inc." 
The Relevance Score is -- " 0.142" 
The Entity is -- " Company" 
The Entity Name is -- " XSTV Media Inc." 
The Relevance Score is -- " 0.364" 
The Entity is -- " Event" 
The Entity Name is -- " General or Shareholder Meeting" 
The Relevance Score is -- " " 
The Entity is -- " Position" 
The Entity Name is -- " analyst" 
The Relevance Score is -- " 0.334" 
The Entity is -- " City" 
The Entity Name is -- " Shreveport" 
The Relevance Score is -- " 0.112" 
The Entity is -- " Company" 
The Entity Name is -- " XSTV Corporation" 
The Relevance Score is -- " 0.319" 
The Entity is -- " Company" 
The Entity Name is -- " Gerard Klauer Mattison" 
The Relevance Score is -- " 0.247" 
The Entity is -- " Company" 
The Entity Name is -- " IDC" 
The Relevance Score is -- " 0.169" 
The Entity is -- " Event" 
The Entity Name is -- " M&A" 
The Relevance Score is -- " " 
The Entity is -- " Facility" 
The Entity Name is -- " The Hilton Hotel" 
The Relevance Score is -- " 0.112" 
The Entity is -- " Person" 
The Entity Name is -- " David Bailey" 
The Relevance Score is -- " 0.247" 
The Entity is -- " Person" 
The Entity Name is -- " Roger Kay" 
The Relevance Score is -- " 0.169" 
Deal with topics later 

Answer 1

見た目だけでなく、配列がどのように動作するか

を理解するには、データがされていることですCalaisSimpleOutputFormat内の配列にグループ化されます

$xml = simplexml_load_string(' 
<CalaisSimpleOutputFormat> 
    <Company>company 1</Company> 
    <event>event 1</event> 
    <Company>company 2</Company> 
    <event>event 2</event> 
</CalaisSimpleOutputFormat> 
'); 

$CalaisSimpleOutputFormat = $xml->children(); 

foreach($xml as $cat_name=>$data_in_cat){ 

    echo $cat_name.' '.$data_in_cat.'<br/>'; 

} 

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