PHP add/remove table Postgresql

Hi I have data from database in postgresql. I show them like this

<form name="delete" id="delete action="<?php echo $PHP_SELF?>" onsubmit="return sprawdz()" method="post" >
<?php
echo"Aktualne terminy rezerwacji.";
$results=pg_query($connection,"select * from ulice_miasta");

    echo "<table border=1>\n";
    echo"<tr><td>Ulica</td><td>Miasto</td><td></td></tr>";
    $i=0;
    for($lt = 0; $lt < pg_num_rows($results); $lt++) {
        echo "<tr>\n";
          for($gt = 1; $gt < pg_num_fields($results); $gt++) {
            echo "<td>" . pg_result($results, $lt, $gt) . "</td>\n";
        }
        for($gt = 0; $gt < 1; $gt++) {
             $abc=pg_result($results,$lt,0);
             echo
        "<td>
        <input type='submit' name='submit' value='delete'/>$abc</td>
        <input type='hidden' name='delete' value=$abc/>";
             }
        
        
        echo "</tr>\n";
    }
    echo "</table>\n";

?>
</form>

On the line " <input type='submit' name='submit' value='delete'/>$abc</td>"  the number is correct but after clicking on "delete" it send by POST the last number from the list.

Any advice ?

The table colums are like "ID", Street, City

"USUN" is a "Delete" button