Question

如何编写foreach循环，使用以下多维数组打印所有信息而不使用任何函数：

$workers = array(
    "Natalie" => array
        ("First term" => array(
              "Subworker" => "Susan", 
               "Length" => '1900-2000', 
                "Notes" => "Finished all tasks"),                     
      "Second term" => array(
               "Subworker" => "Laura", 
             "Length" => '1985-1986'), 
           ),               
      "Laura" => array(
            "First term" => array(
                  "Subworker" => "Sarah", 
                  "Length" => '1999-1992'),                     
             ),               
        "Carolyn" => array(
             "First term" => array(
                  "Subworker" => "Jenny", 
                  "Length" => '1900 -1945', 
                  "Notes" => array
                         ("Finished all tasks", 
                           "Did not finish all tasks",                           
                           "Completed partial tasks" )
                  ),                    
                  ),               
        "Jacob" => array(
            "First term" => array(
                "Subworker" => "Danielle", 
                "Length" => '1993-1994', 
                "Notes" => "Finished all tasks"),                       
                ),   
        "Jenny" => array(
           "First term" => array(
                "Subworker" => "Angela", 
                "Length" => '1999 - 2001'),                      
           "Second term" =>        array(
              "Subworker" => array(
                    "Paula" => "Let Go", 
                    "Steve" => "Hired"), 
              "Length" => '1987 - 1999', 
              "Notes" => "Hired"),                              
            )              
        );

/ ****到目前为止，我已经完成了以下操作，但它并没有打印出所有内容。例如，它不是在Jenny，第二学期，Subworker Paula和Steve下打印出来的./*****

foreach($workers as $worker => $value) {
    foreach ($value as $newkey => $info) {
         echo $worker.':<br>'.$newkey.':<br>';
             foreach ($value as $newkey) {
                 echo 'Subworker: '.$newkey["Subkey"].'<BR>';
                     foreach ($value as $newkey) {
                         echo 'Length: '.$newkey["Length"].'<BR>';
                            foreach ($value as $newkey) {
                            echo 'Notes: '.$newkey["Notes"].'<BR>';             
               }
           }
        }
      }
   }

Answer 1

有必要通过函数进行交叉并在上游进行小测试，避免在dev环境中返回错误总是有用的。：）

我必须添加列表（ul，li）以便更好地阅读

if (is_array($workers) && !empty($workers)) {
    echo loopArray($workers);
} else {
    echo "<ul><li>".$workers."</li></ul>";
}

function loopArray($array)
{
    $result = "";
    $result .= "<ul>";
    foreach ($array as $item => $value) {
        if (is_array($value) && !empty($value)) {
            $result .= "<li>".$item;
            $result .= loopArray($value)."</li>";
        } else {
            $result .= "<ul><li>".$item.': '.$value."</li></ul>";
        }
    }
    $result .= "</ul>";

    return $result;
}

Answer 2

要打印您提供的特定数组，而不使用函数：

// workers
foreach($workers as $worker => $workerarr) {
  echo $worker.":<ul>\n";

  // worker terms
  foreach ($workerarr as $term => $terminfo) {
    echo "<li>$term:<ul>\n";

    // term info
    foreach ($terminfo as $type => $typevalue) {
      echo "<li>$type: ";

      // is type value an array?
      if ( is_array($typevalue) ) {

        // if so, put in list
        echo "<ul>\n";
        foreach ($typevalue as $label => $value) {
          $label = is_int($label)? '': "$label: "; // only print text
          echo "<li>$label$value</li>\n";
        }
        echo "</ul>";
      }

      // if not...
      else {
        echo $typevalue;
      }

      echo "</li>\n";
    }
    echo "</ul></li>\n";
  }
  echo "</ul>";
}

使用无序列表帮助以可读方式显示信息。要查看问题中仅包含拆分标记，请参阅PHP Sandbox - Original

PHP Sandbox - Unordered Lists

（）具有不同编号元素级别的多维数组

2 个答案: