Php 如果匹配，如何获取其他数组值？

阵列1输出

 Array ( 
       [0] => Array ( [ID] => 335 [userid] => 4 [username] => demo [media_id] => 17 ) 
       [1] => Array ( [ID] => 436 [userid] => 4 [username] => demo [media_id] => 18 )
       [2] => Array ( [ID] => 637 [userid] => 4 [username] => demo [media_id] => 19 ) 
       [3] => Array ( [ID] => 838 [userid] => 4 [username] => demo [media_id] => 20 ) 
 );

阵列2输出

 Array ( 
        [1] => Array ( [ID] => 35 [userid] => 4  [media_id] => 17 ) 
        [2] => Array ( [ID] => 36 [userid] => 4  [media_id] => 18 )
     );

如果匹配，如何获取其他数组值？我需要如果

array 2

的

media\u id

和

userid

在

array 1

中匹配，那么如何从

array 2

的每个循环中的

array 1

获取perticular

id

和

username

更新

$array1 = array ( 
    0 => array ( "ID" => "335", "userid" => "4", "username" => "demo", "media_id" => "17" ), 
    1 => array ( "ID" => "436", "userid" => "4", "username" => "demo", "media_id" => "18" ),
    2 => array ( "ID" => "637", "userid" => "4", "username" => "demo", "media_id" => "19" ), 
    3 => array ( "ID" => "838", "userid" => "4", "username" => "demo", "media_id" => "20" ) 
                      );

$array2 = array ( 
    1 => array ( "ID" => "35", "userid" => "4", "media_id" => "17" ),
    2 => array ( "ID" => "36", "userid" => "4", "media_id" => "18" )
                          );


      foreach($array2 as $array) {

          foreach($array1 as $get_data) {
                 if($array1['media_id'] == $get_data['media_id'] && $array1['userid'] == $get_data['userid']){
                                    $get_result[] = //get_data true;
                                   } else {
                                    $get_result[] = //get_data false;
                                   }
                                }


                      //get ID and username or show false value 


              }  

最终答案

foreach($array2 as $array) {
     $return = "false";
     foreach($array1 as $get_data) {
         if($array1['media_id'] == $get_data['media_id'] && $array1['userid'] == $get_data['userid']) {
         $get_result[] = ['ID' => $get_data['ID'], 'username' => $get_data['username']];
         $return = "true";
    }
  }

   if($return = "false"){
        echo false;
   }

}

---

如果我能很好地理解你的问题（我不确定），这应该可以：

foreach($array2 as $array) {
  foreach($array1 as $get_data) {
    if($array1['media_id'] == $get_data['media_id'] && $array1['userid'] == $get_data['userid']) {
      $get_result[] = ['ID' => $get_data['ID'], 'username' => $get_data['username']];
    }
  }
}
if (count($get_result) == 0) {
  $get_result[] = false;
}

---

不确定你的真正需要，但@gmc给了你（全部的一部分？）你需要的东西

<?php

$array1 = array ( 
0 => array ( "ID" => "335", "userid" => "4", "username" => "demo", "media_id" => "117" ), 
1 => array ( "ID" => "436", "userid" => "4", "username" => "demo", "media_id" => "118" ),
2 => array ( "ID" => "637", "userid" => "4", "username" => "demo", "media_id" => "19" ), 
3 => array ( "ID" => "838", "userid" => "4", "username" => "demo", "media_id" => "20" ) 
                  );

$array2 = array ( 
1 => array ( "ID" => "35", "userid" => "4", "media_id" => "17" ),
2 => array ( "ID" => "36", "userid" => "4", "media_id" => "18" )
                      );

$get_result = array();

  foreach($array2 as $array) {

      foreach($array1 as $get_data) {
             if( ($array['media_id'] == $get_data['media_id']) && ($array['userid'] == $get_data['userid'])) {
                                $get_result[] = ['ID' => $get_data['ID'], 'username' => $get_data['username']];
                               }
                            }
  }

if (count($get_result) == 0) {
echo"false";
}
else {
echo"true"; print_r($get_result); }
?>

/* I modified values to 117 & 118 -> returns "false" */
/* If you set values to 17 & 18 -> returns "true" */

/*我将值修改为117&118->返回“false”*/
/*如果将值设置为17和18->返回“true”*/

请输入一个有效的php数组，而不是输出在哪里尝试使用

foreach（）

？我试过了，谢谢，但问题是，如果为false，我需要一个值。但它显示出多重假值。我想你明白了@如果不匹配，gmcAny选项仅获取一次false？我得到多个假值。我需要在第一个foreach中使用此值。有什么想法吗？谢谢你的帮助，但我终于解决了。检查答案。正在工作，但问题是相同的，我需要一个值

false

在else选项中只需要一次，但我需要多次。->我需要一个值false->你的意思是什么？“媒体id”=>“17”->true+“媒体id”=>“18”->true+“媒体id”=>“19”->false+“媒体id”=>“20”->false？但您需要将错误答案存储在哪里？请参阅gmc答案。我想他完全理解我的问题，我需要在第一个论坛上讨论这个问题。谢谢你的帮助，但最终我解决了这个问题。检查答案。