Exécuter quatre requêtes sur trois bases de données en PHP

Question

Je suis assez nouveau à PHP et MySQL et aller sur des choses que j'ai lu dans divers endroits, j'ai réussi à couper ensemble ce script, malheureusement, la sortie n'est pas tout à fait ce que je prévu, je reçois beaucoup de:

Buffer Status 2H: Notice: Undefined variable: row in /var/www/secretbit/allbuff.php on line 53 0 records. <br /> 
Buffer Status TC: Notice: Undefined variable: row in /var/www/secretbit/allbuff.php on line 54 0 records. <br /> 
Buffer Status ST: Notice: Undefined variable: row in /var/www/secretbit/allbuff.php on line 55 0 records. <br /> 
Buffer Status 3C: Notice: Undefined variable: row in /var/www/secretbit/allbuff.php on line 56 0 records <br /> 

Et voici le code que je l'ai utilisé pour compiler ce monstre:

<?php 

error_reporting(-1); 
ini_set('display_errors', true); 

$con = mysqli_connect(
    '192.168.20.10', 
    'root2', 
    'password', 
    'contaque' 
); 

$con2 = mysqli_connect(
    '192.168.20.222', 
    'root2', 
    'password', 
    'contaque' 
); 

$con3 = mysqli_connect(
    '192.168.20.8', 
    'root2', 
    'password', 
    'contaque' 
); 

$res = mysqli_query(
$con, 
    "SELECT COUNT(*) AS 'total1' FROM contaque_hopper WHERE campaign_id = 'CLOSERUK';" 
); 

$res = mysqli_query(
$con2, 
    "SELECT COUNT(*) AS 'total2' FROM contaque_hopper WHERE campaign_id = 'CLOSERTC';" 
); 

$res = mysqli_query(
$con2, 
    "SELECT COUNT(*) AS 'total3' FROM contaque_hopper WHERE campaign_id = 'CLOSERST';" 
); 

$res = mysqli_query(
$con3, 
    "SELECT COUNT(*) AS 'total4' FROM contaque_hopper WHERE campaign_id = 'CLOSER3C';" 
); 

echo 'Buffer Status 2H: ', (int)$row['total1'], ' records. <br />'; 
echo 'Buffer Status TC: ', (int)$row['total2'], ' records. <br />'; 
echo 'Buffer Status ST: ', (int)$row['total3'], ' records. <br />'; 
echo 'Buffer Status 3C: ', (int)$row['total4'], ' records. <br />'; 

?> 

Answer 1

Eh bien, il ressemble à $row est indéfini. Je pense que vous devez probablement utiliser la méthode mysqli_fetch_assoc() pour obtenir les résultats des requêtes.