Не удаляется запись из базы по нажатию кнопки

$connection = mysql_connect('localhost', 'root', '');
    $db = mysql_select_db("myadmin");
    if(!$connection || !$db) {
    exit (mysql_error());
    } 
    
$query = "SELECT * FROM `user` WHERE login= "."'".$_POST['user']. "'". "AND password=". "'".$_POST['pass']."'". "AND id= 1";
 
    $result = mysql_query($query);
    $row = mysql_fetch_array($result);
      if(!$row) 
{
              echo "no correct";
     
}
      else {
         
            $queri_names = ("SELECT name, surname, id from user");
            $result_names = mysql_query($queri_names)or die (mysql_error());
        //echo "<form action='' method='POST'";
        echo "
        <form action='' method='POST'>
        <table border=1>
         <tr>
         <td>Id</td>
         <td>name</td>
         <td>surname</td>
         </tr>";
    
 
        while ($row = mysql_fetch_assoc($result_names))
                    
    {   
        echo "<tr><td>",
 
            '<input type="submit" name="deleteItem" value= "'.$row["id"].'">' 
             ."'"."&nbsp;</td><td>"  . $row["name"].
                 "&nbsp;</td><td>"                                                                                                                                                  
                . $row["surname"]."<br>";            
    }
        echo "
        </table>
        </form>";
     
    } 
    if(isset($_POST['deleteItem']) and is_numeric($_POST['deleteItem'])){
 
        $_POST['deleteItem'];
    $delete = $_POST['deleteItem'];
    $query = ("DELETE FROM `user` where `id` = '$delete'"); 
 
}
 
 
mysql_close();
 
    ?>

$connection = mysql_connect('localhost', 'root', '');
    $db = mysql_select_db("myadmin");
    if(!$connection || !$db) {
    exit (mysql_error());
    } 
if(isset($_POST['deleteItem']) and is_numeric($_POST['deleteItem'])){
    $delete = $_POST['deleteItem'];
    $query = ("DELETE FROM `user` where `id` = '$delete'"); 
    $result = mysql_query($query);
 
}
    
$query = "SELECT * FROM `user` WHERE login= "."'".$_POST['user']. "'". "AND password=". "'".$_POST['pass']."'". "AND id= 1";
 
    $result = mysql_query($query);
    $row = mysql_fetch_array($result);
      if(!$row) 
{
              echo "no correct";
     
}
      else {
         
            $queri_names = ("SELECT name, surname, id from user");
            $result_names = mysql_query($queri_names)or die (mysql_error());
        //echo "<form action='' method='POST'";
        echo "
        <form action='' method='POST'>
        <table border=1>
         <tr>
         <td>Id</td>
         <td>name</td>
         <td>surname</td>
         </tr>";
    
 
        while ($row = mysql_fetch_assoc($result_names))
                    
    {   
        echo "<tr><td>",
 
            '<input type="submit" name="deleteItem" value= "'.$row["id"].'">' 
             ."'"."&nbsp;</td><td>"  . $row["name"].
                 "&nbsp;</td><td>"                                                                                                                                                  
                . $row["surname"]."<br>";            
    }
        echo "
        </table>
        </form>";
     
    } 
 
 
mysql_close();
 
    ?>

$connection = mysql_connect('localhost', 'root', '');
$db = mysql_select_db("myadmin");
if (!$connection || !$db) {
    exit(mysql_error());
}
if (isset($_POST['deleteItem']) and is_numeric($_POST['deleteItem'])) {
    $delete = $_POST['deleteItem'];
//    $query = ("DELETE FROM `user` where `id` = '$delete'"); 
    $deltime = time() + 86400;
    $query = ("update `user` set `deleted`= '$deltime' where `id` = '$delete'");
    $result = mysql_query($query);
}
if (isset($_POST['returnItem']) and is_numeric($_POST['returnItem'])) {
    $delete = $_POST['returnItem'];
    $query = ("update `user` set `deleted`= '0' where `id` = '$delete'");
    $result = mysql_query($query);
}
$deltime = time();
$query = ("DELETE FROM `user` where `deleted` > 0 and `deleted` < '$deltime'");
$result = mysql_query($query);
 
$query = "SELECT * FROM `user` WHERE login= " . "'" . $_POST['user'] . "'" . "AND password=" . "'" . $_POST['pass'] . "'" . "AND id= 1";
 
$result = mysql_query($query);
$row = mysql_fetch_array($result);
if (!$row) {
    echo "no correct";
} else {
 
    $queri_names = ("SELECT name, surname, id from user");
    $result_names = mysql_query($queri_names)or die(mysql_error());
    //echo "<form action='' method='POST'";
    $fh = '<table border=1>'
            . '<tr><td>Id</td><td>name</td><td>surname</td></tr>';
    $ff = '</table>';
    $trtd = '<tr><td>_R_</td></tr>';
    $bdel = '<form action="" method="POST">Удалить:<input type="submit" name="deleteItem" value= "_ID_"></form>';
    $bret = '<form action="" method="POST">Восстановить:<input type="submit" name="returnItem" value= "_ID_"></form>';
    if ($row['deleted'] > 0) {// проверяем маркер удаления для вывода верной кнопки
        $bt = $bret;
    } else {
        $bt = $bdel;
    }
    $ri = $b . '&nbsp;</td><td>_INF_N_&nbsp;</td><td>_INF_S_';
    $rd = '';
    echo $fh;
 
 
    while ($row = mysql_fetch_assoc($result_names)) {
        $r = array();
        $r['_ID_'] = $row['id'];
        $r['_INF_N_'] = $row['name'];
        $r['_INF_S_'] = $row['surname'];
        $ri = strtr($ri, $r); // подставляем  переменные
        $r = array();
        $r['_R_'] = $ri;
        $trtd = strtr($trtd, $r); // добавляем внешние теги
        echo $trtd;
    }
    echo $ff;
}
mysql_close();