php mysql+ 注意 : Array to string conversion in C

Question

当我尝试用逗号分解数组时，我不断收到此错误，任何人都可以帮助我如何修复此错误???

friend_request.php

 <?php

     if(isset($_POST['acceptrequest'.$user_from]))
     {
         //select the friend array  row  from the logged in user
         $get_friend_check = mysql_query("SELECT friend_array FROM user WHERE user_name = '$login_user'") or die(mysql_error());
         $get_friend_row = mysql_fetch_assoc($get_friend_check);
         $friend_array = $get_friend_row['friend_array'];
         $friendArray_explode = explode(",", $friend_array);
         echo $friendArray_explode;
     }
     ?>

The last line of code produce this error how to fix it ??

Answer 1

这是一个注意(不是错误!) - 您正在尝试像字符串一样打印数组。使用 print_r 或 var_dump 代替 echo:

print_r($friendArray_explode);