Question

问候

有人对递归函数有一些经验吗？

我正在尝试将XML文件解析为对象（在PHP中）（稍后在drupal中使用它）我写的代码是在第一个“children”节点之后几乎总是相同的（见下文）。改变的唯一两件事是来自xpath的链接（不应该那么困难）和创建动态对象变量（如果存在）。

第一个主题的代码（整个过程是一个课程）

'$ item-＆gt; ident＆lt; - 因为你在foreach

而闻名

$ resulty = $ xpaths-＆gt; xpath（“/ org.olat.course.Structure / rootNode / children / [ident = '$ item-＆gt; ident'] / children / [type ='st'或type ='sp'或type = 'BC']“）;
foreach ($resulty as $itemy) {

   $SubjectObject = new subject();

// isnt 100% correct but doesn't matter now

   $SubjectObject->getSubjectFolders($FolderObject);

  $SubjectObject->setSubjectId(isset($item->SubjectId) ? (string) $item->SubjectId: null);
  $SubjectObject->setSubjectShortTitle(isset($item->SubjectName) ? (string) $item->SubjectName: null);

  $ChapterObject->setSubject($SubjectObject);
 }

现在 - 如果我想要来自某个科目的科目的科目而不是

$ resulty = $ xpaths-＆gt; xpath（“/ org.olat.course.Structure / rootNode / children / [ident ='$ item-＆gt; ident'] / children / [ type ='st'或type ='sp'或type ='bc']“）;

foreach ($resulty as $itemy) {

   $SubjectObject = new subject();

   $SubjectObject->getSubjectFolders($FolderObject);

  $SubjectObject->setSubjectId(isset($itemy->SubjectId) ? (string) $itemy->SubjectId: null);
  $SubjectObject->setSubjectShortTitle(isset($itemy->SubjectName) ? (string) $itemy->SubjectName: null);

        $resultz = $xpaths->xpath("/org.olat.course.Structure/rootNode/children/*[ident = '$item->ident']children/*[ident = '$itemy->ident']/children/*[type = 'st' or type = 'sp' or type = 'bc']");

            foreach ($resultz as $itemz) {

               $SubSubjectObject = new subject();

               $SubSubjectObject->getSubjectFolders($FolderObject);

              $SubSubjectObject->setSubjectId(isset($itemz->SubjectId) ? (string) $itemz->SubjectId: null);
              $SubSubjectObject->setSubjectShortTitle(isset($itemz->SubjectName) ? (string) $itemz->SubjectName: null);



                            $resulta = $xpaths->xpath("/org.olat.course.Structure/rootNode/children/*[ident = '$item->ident']/children/*[ident = '$itemy->ident']/children/*[ident = '$itemz->ident']/children/*[type = 'st' or type = 'sp' or type = 'bc']");

                                foreach ($resulta as $itema) {

                                   $SubSubSubSubjectObject= new subject();

                                   $SubSubSubSubjectObject->getSubjectFolders($FolderObject);

                                  $SubSubSubSubjectObject->setSubjectId(isset($itema->SubjectId) ? (string) $itema->SubjectId: null);
                                  $SubSubSubSubjectObject->setSubjectShortTitle(isset($itema->SubjectName) ? (string) $itema->SubjectName: null);


                                                  (and so on)


                                  $SubSubSubjectObject->setSubject($SubSubSubSubjectObject);
                                 }



              $SubjectObject->setSubject($SubSubjectObject);

          }


  $ChapterObject->setSubject($SubjectObject);

}

这里是xml树（示例）

<Structure>

    <rootnode>

        <CursusName>History</CursusName>
        <CursusId>100001</CursusId>
        <children>

            <childNode>

                 <SubjectName>World War 1</SubjectName>
                <SubjectId>100002</SubjectId>
                <children>

                    <childNode>

                         <SubjectName>World War 1.1</SubjectName>
                        <SubjectId>100016</SubjectId>
                        <children>

                            <childNode>

                                 <SubjectName>World War 1.1.1</SubjectName>
                                <SubjectId>100032</SubjectId>
                                <children>

                                    <childNode>

                                         <SubjectName>World War 1.1.1.1</SubjectName>
                                        <SubjectId>100065</SubjectId>
                                        </children>

                                    </childNode>

                                </children>
                                +<children></children>

                            </childNode>

                        </children>
                        +<children></children>

                    </childNode>
                    +<childNode></childNode>

                </children>
                +<children></children>

            </childNode>
            +<childNode></childNode>
            +<childNode></childNode>

        </children>
        +<visibility></visibility>
        +<accessibility></accessibility>

    </rootnode>
    <version>1</version>

</Structure>

SO

有人可以帮我吗？有人知道如何解决对象的问题吗？一种foreach / while循环创建对象？并将它们提取到他的父对象中？

抱歉长篇文章和所有这些代码行

亲切的问候

迪特尔

亲切的问候

Answer 1

function recurseResults($resulty)
{
    foreach ($resulty as $itemy) 
    {
        $SubjectObject = new subject();
        $SubjectObject->getSubjectFolders($FolderObject);
        $SubjectObject->setSubjectId(isset($itemy->SubjectId) ? (string) $itemy->SubjectId: null);
        $SubjectObject->setSubjectShortTitle(isset($itemy->SubjectName) ? (string) $itemy->SubjectName: null);
        $resultz = $xpaths->xpath("/org.olat.course.Structure/rootNode/children/*[ident = '$item->ident']children/*[ident = '$itemy->ident']/children/*[type = 'st' or type = 'sp' or type = 'bc']");
        // __save my new subject somewhere__
        recurseResults($resultz);
    }
}

如何在嵌套的xml中创建递归函数 - PHP

1 个答案: