MySQL 正在插入 NULL 值

Question

have some trouble with my table.

With every new request, MySQL add a NULL value and i dont know why :( in fact all my column data are "shifted", any idea how to fix that ? thanks

To add a query into SQL i use this kind of code :

PS : even when i set my column into NOT NULL it replace the name with blank.

require_once 'sql.php';
  $sqlConnexion = new mysqli($hn,$un,$pw,$db);
    if($sqlConnexion->connect_error){
      die ('Soucis de connexion SQL');}
       $date = date("d/m/y G:i:s");

 if(isset($_POST['zoneDeText'])){
 $area = $_POST['zoneDeText'];

$A = preg_replace('/\s{1,}/',' ', $area);
    $B =preg_replace('/^\s/','', $A);
            $C = preg_replace('/,$/', '', $B);
                $explode = explode(' ', $C);

if($C != ''){
$instruction= $sqlConnexion->prepare("INSERT INTO entry SET entréesUtilisateurs=?");
    if($instruction !== false){
        $instruction->bind_param('s', $C);
            $instruction->execute();
                $instruction->close();
    }else{
        echo "Trouble inserting $C";
    }

SQL trouble in image

Answer 1

Why are you using "INSERT INTO entry SET"?

You should use "INSERT INTO entry(entréesUtilisateurs, SortieTraitée, Date) VALUES (?, ?, ?)"