Php 在使用稀疏键访问内部数组时，如何遍历二维数组？

我有一个2D数组$UserDesignedCategory

Array ( 
    [1] => Array (
        [0] => CEO 
        [1] => Assistant Art Director 
        [2] => Assistant Choreographer 
        [3] => Assistant Creative Director 
        [4] => Assistant Director 
        [5] => Assistant Editor 
        [6] => Assistant Equipment Engineer 
        [7] => Assistant Hair Dresser 
        [8] => Assistant Lighting Director 
        [9] => Assistant Make Up Artist 
    ) 
    [2] => Array ( 
        [0] => Senior Developer 
    ) 
    [3] => Array ( 
        [0] => CEO 
        [1] => Script Supervisor 
        [2] => Creative Director 
        [3] => Anchor 
        [4] => Executive Producer 
        [5] => Director 
        [6] => Actor 
    ) 
    [7] => Array ( 
        [0] => Director 
        [1] => Executive Producer 
        [2] => Journalist 
        [3] => Producer 
    ) 
    [10] => Array ( 
        [0] => Head of Division 
        [1] => Vice President 
    ) 
    [11] => Array ( 
        [0] => Anchor 
        [1] => Chairman 
        [2] => Co Founder 
        [3] => Creative Director 
        [4] => Director 
    ) 
    [13] => Array ( 
        [0] => Associate Producer 
    ) 
    [16] => Array ( 
        [0] => Accounts Manager 
    ) 
    [20] => Array ( 
        [0] => Adventure Cameraperson 
        [1] => Cameraperson 
        [2] => Director Of Photography 
        [3] => Underwater Cameraperson 
    ) 
    [21] => Array ( 
        [0] => Director 
        [1] => Screenplay Writer 
        [2] => Writer 
    ) 
    [28] => Array ( 
        [0] => Director 
    ) 
    [50] => Array ( 
        [0] => Cameraperson 
    ) 
    [73] => Array ( 
        [0] => Accounts Manager 
        [1] => Actor 
        [2] => Aerial Cameraperson 
        [3] => Anchor 
    ) 
    [78] => Array ( 
        [0] => Accounts Manager 
        [1] => Aerial Cameraperson 
        [2] => Animator 
    ) 
    [79] => Array ( 
        [0] => Actor 
        [1] => Anchor 
        [2] => Adventure Cameraperson 
        [3] => Aerial Cameraperson 
        [4] => Animation Director 
        [5] => Animator 
        [6] => Assistant Make Up Artist 
        [7] => Assistant Manager 
    ) 
    [82] => Array ( 
        [0] => Adventure Cameraperson 
        [1] => Cameraperson 
        [2] => Director Of Photography 
        [3] => Associate Producer 
    )
    [86] => Array ( 
        [0] => Director 
        [1] => Producer 
        [2] => Writer 
    ) 
    [87] => Array ( 
        [0] => Co Founder 
        [1] => Vice President 
    ) 
) 

我有稀疏的键，因此无法对（$I=0；I‘小于’计数；$I++）使用

我已经使用了foreach（$userDesignatedCatogery作为$key=>$value），但它也没有帮助

---

如何遍历此数组以访问内部数组？

数组的简单遍历

<?php

  foreach($userDesignatedCatogery as $index => $pull) {
    echo '#' . $index . '<br>';
    foreach($pull as $id => $position)
        echo $id . ' => ' . $position . '<br>';
  } 

您有两种方法：

第一个：

$count = count($userDesignatedCategory);
for ($i=0; $i < $count; $i++) { 
    foreach ($userDesignatedCategory[$i] as $item) {
        //some codes here
    }
}

foreach ($userDesignatedCategory as $item) {
    foreach ($item as $subitem) {
        // some code here
    }
}

如何仅访问整个单个内部阵列？我必须找到userDesginationCategory[0]与所有内部数组的交集。$key=key（$UserDesignedCategory）$main=$UserDesignedCategory[$key]；未设置（$UserDesignedCategory[$key]）$结果=[]；foreach（$userDesignedCategory as$index=>$values）{如果（$intersect=array\u intersect（$main，$values））$result[$index]=$intersect；}/$result-有你的交集你的期望结果是什么？如何在第二种方法中访问内部数组的键？@KaranTikku你的数组没有键名，你可以计算索引，像这样：
foreach（$userdesignatedcography作为$item）{$count=0；foreach（$item作为$subitem）{$current_index=$count；$count++；}}
I使用array_search（）访问内部元素键。@KaranTikku这是为了在数组中搜索，要使用这个函数，您最有价值找到键！我的代码通过计算步数来显示我现在的位置！如果你的问题解决了，我很高兴。