php - 在 PHP 中访问数组内部的数组

Question

你好，我想访问这个数组中的非事件标签，你知道吗？

stdClass::__set_state(
array
  'languages' => 
    array
      76 => 
        array
          'id' => string '76' (length=2)
          'tag' => string 'Deutsch' (length=7)
  'targets' => 
    array
      81 => 
        array
          'id' => string '81' (length=2)
          'tag' => string 'Deutschland' (length=11)
  'tags' => 
    array
      7866 => 
        array
          'id' => string '7866' (length=4)
          'tag' => string 'automobile' (length=10)
      17800 => 
        array
          'id' => string '17800' (length=5)
          'tag' => string 'seat leon' (length=9)
      17801 => 
        array
          'id' => string '17801' (length=5)
          'tag' => string 'seat leon cupra' (length=15)
  'inactiveTags' => 
    array
      195 => 
        array
          'id' => string '195' (length=3)
          'tag' => string 'auto' (length=4)
      17804 => 
        array
          'id' => string '17804' (length=5)
          'tag' => string 'coupès' (length=6)
      17805 => 
        array
          'id' => string '17805' (length=5)
          'tag' => string 'fahrdynamik' (length=11)
      901 => 
        array
          'id' => string '901' (length=3)
          'tag' => string 'fahrzeuge' (length=9)
      17802 => 
        array
          'id' => string '17802' (length=5)
          'tag' => string 'günstige neuwagen' (length=17)
      1991 => 
        array
          'id' => string '1991' (length=4)
          'tag' => string 'motorsport' (length=10)
      2154 => 
        array
          'id' => string '2154' (length=4)
          'tag' => string 'neuwagen' (length=8)
      10660 => 
        array
          'id' => string '10660' (length=5)
          'tag' => string 'seat' (length=4)
      17803 => 
        array
          'id' => string '17803' (length=5)
          'tag' => string 'sportliche ausstrahlung' (length=23)
      74 => 
        array
          'id' => string '74' (length=2)
          'tag' => string 'web 2.0' (length=7)
  'categories' => 
    array
      16082 => 
        array
          'id' => string '16082' (length=5)
          'tag' => string 'Auto & Motorrad' (length=15)
      51 => 
        array
          'id' => string '51' (length=2)
          'tag' => string 'Blogosphäre' (length=11)
      66 => 
        array
          'id' => string '66' (length=2)
          'tag' => string 'Neues & Trends' (length=14)
      68 => 
        array
          'id' => string '68' (length=2)
          'tag' => string 'Privat' (length=6)

Answer 1

您可以访问非事件标签数组(假设 $myArray 包含该数组)

$myArray['inactiveTags'];

你的问题似乎并没有超出访问 inactiveTags 键的内容，所以我只能推测你的最终目标是什么。

inactiveTags 数组中的第一个键值对是

array ('195' => array(
                 'id' => 195, 
                 'tag' => 'auto')
      )

要访问标签值，您可以使用

$myArray['inactiveTags'][195]['tag']; // auto

如果您想遍历每个 inactiveTags 元素，我建议:

foreach($myArray['inactiveTags'] as $value) {
  print $value['id'];
  print $value['tag'];
}

这将打印每个 inactiveTag 的所有 id 和标签值

编辑::为了让其他人看到，这里是问题中提供的数组的 var_dump，因为它不可读

array  'languages' =>     array      76 =>         array          'id' => string '76' (length=2)          'tag' => string 'Deutsch' (length=7)  'targets' =>     array      81 =>         array          'id' => string '81' (length=2)          'tag' => string 'Deutschland' (length=11)  'tags' =>     array      7866 =>         array          'id' => string '7866' (length=4)          'tag' => string 'automobile' (length=10)      17800 =>         array          'id' => string '17800' (length=5)          'tag' => string 'seat leon' (length=9)      17801 =>         array          'id' => string '17801' (length=5)          'tag' => string 'seat leon cupra' (length=15)  'inactiveTags' =>     array      195 =>         array          'id' => string '195' (length=3)          'tag' => string 'auto' (length=4)      17804 =>         array          'id' => string '17804' (length=5)          'tag' => string 'coupès' (length=6)      17805 =>         array          'id' => string '17805' (length=5)          'tag' => string 'fahrdynamik' (length=11)      901 =>         array          'id' => string '901' (length=3)          'tag' => string 'fahrzeuge' (length=9)      17802 =>         array          'id' => string '17802' (length=5)          'tag' => string 'günstige neuwagen' (length=17)      1991 =>         array          'id' => string '1991' (length=4)          'tag' => string 'motorsport' (length=10)      2154 =>         array          'id' => string '2154' (length=4)          'tag' => string 'neuwagen' (length=8)      10660 =>         array          'id' => string '10660' (length=5)          'tag' => string 'seat' (length=4)      17803 =>         array          'id' => string '17803' (length=5)          'tag' => string 'sportliche ausstrahlung' (length=23)      74 =>         array          'id' => string '74' (length=2)          'tag' => string 'web 2.0' (length=7)  'categories' =>     array      16082 =>         array          'id' => string '16082' (length=5)          'tag' => string 'Auto & Motorrad' (length=15)      51 =>         array          'id' => string '51' (length=2)          'tag' => string 'Blogosphäre' (length=11)      66 =>         array          'id' => string '66' (length=2)          'tag' => string 'Neues & Trends' (length=14)      68 =>         array          'id' => string '68' (length=2)          'tag' => string 'Privat' (length=6)