Mysqli Undefined index Array json

Question

i Hinweis mit Summe metode haben: "Undefined index: PGW maximal aktiven Teilnehmer"

$a=mysqli_query($koneksi, "SELECT sum(`PGW maximum active subscribers`) as count FROM ggsn_4g_pdp_max"); 
 
\t $b=mysqli_query($koneksi, "SELECT sum('SGW maximum active subscribers') as count FROM ggsn_4g_pdp_max"); 
 
\t $c=mysqli_query($koneksi, "SELECT sum('SPGW maximum active subscribers') as count FROM ggsn_4g_pdp_max"); 
 
\t 
 
\t 
 
    $pgw_array=array(); 
 
    $sgw_array=array(); 
 
    $spgw_array=array(); 
 
    
 
\t 
 
    while($r=mysqli_fetch_array($a)){ 
 
     $pgw_array[]= $r["PGW maximum active subscribers"]; 
 
\t } 
 
\t while($g=mysqli_fetch_array($b)){ 
 
     $sgw_array[]= $g["SGW maximum active subscribers"]; 
 
\t } 
 
\t while($n=mysqli_fetch_array($c)){ 
 
     $spgw_array[]= $n["SPGW maximum active subscribers"]; 
 
\t }

, wie ich festgelegt kann ... bitte

Answer 1

? Sie müssen den Alias ​​count: $r["count"]