Php+html+phpmyadmin

<?php
ini_set('error_reporying',E_ALL);
ini_set('display_errors',1);
ini_set('display_startup_errors',1);
header('Content-Type: text/html; charset=utf-8');
$hostname='localhost';
$username='root';
$password='123456';
$dbname='regina';
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link=mysqli_connect($hostname,$username,$password,$dbname);
if ($link) {print "<br>Подключение к БД прошло удачно!</br>";}
 else { print "<br>Не могу присоединиться! </br>";}
echo "<form method='POST' action='my_basa1.php'>Город: ";
echo "<select name='city'>";
echo "<option value=''>--Выберите город--</option>";
$result=mysqli_query("SELECT `city_name` FROM `city`",$link);
$array=mysqli_fetch_array($result);
do
{
echo "<option value=".$array[`city_name`].">".$array[`city_name`]."</option>";
}
while($array = mysqli_fetch_array($result));
echo "</select></form>";
mysqli_close($link);
?>

while($array = mysql_fetch_array($result))
{
echo "<option value='".$array['city_name']."'>".$array['city_name']."</option>";
}

echo "<form method='POST' action=''>Город: ";
$query="SELECT `city_name` FROM `city`";
$result=mysqli_query($link,$query);
$row=mysqli_fetch_assoc($result);
echo "<select name='city'>";
echo "<option disabled>--Выберите город--</option>";
if ($result=mysqli_query($link,$query)) {
while ($row=mysqli_fetch_assoc($result)) {
echo "<option value='$row[city_name]'>$row[city_name]</option>)";
}} else { "Не вышло=(";}
echo "</select>";

$city=@$_POST['city'];

echo "<p>Город: ";
$querycity="SELECT `city_name` FROM `city`";
$resultcity=mysqli_query($link,$querycity);
$selectcity='<select name="city">';
$selectcity.='<option disabled>--Выберите город--</option>';
while ($rowcity=mysqli_fetch_assoc($resultcity)): 
$selectcity.='<option value="'.$rowcity['city_name'].'" ';
if ($rowcity["city_name"] == $city)
{
 $selectcity.=' selected';
}
$selectcity.= '>'.$rowcity["city_name"].'</option>)';
endwhile;
$selectcity.='</select>';
echo $selectcity;