How to echo option i selected, because right now it shows blank

[Lukeishen]

<?php  
                              if(mysqli_num_rows($result) )  
                          {  
                               while($row = mysqli_fetch_array($result))  
                               {  
                          ?>  
                          <form method="POST">
                              <select name="inv"> 
                               <option><?php echo $row["rizikos_lygis"];?></option>
                               <option value=<?php echo $row["sugeneruoja"]; ?>><?php echo $row["pavadinimas"];?>&nbsp<?php echo $row["sugeneruoja"]; ?></option>
                              </select>
                              <input type="submit" name="submit" value="Apskaičiuoti">    
                          </form>
                          <?php  
                               }  
                          }  
  ?> 
<?php
if(isset($_POST['submit'])){
 echo $row["sugeneruoja"];
}
?>

Edited January 27, 2021 by Lukeishen

[dodgeitorelse3]

Assuming you ran a query to get $result your first option has no value set. The second option should have the echo inside quotes just like your submit does.

Edited January 27, 2021 by dodgeitorelse3

[Phi11W]

You structure looks wrong to me. 

You have multiple form elements, each of which contains one select element with two option elements. 

I would expect there to be one form element, which contains one select element, which contains one or more option elements. 

echo( '<form method="POST">' ); 
echo( '<select name="inv">' );
if( mysqli_num_rows($result) ) 
{  
  echo( '<option>' . $row["rizikos_lygis"] . '</option>' );
  while( $row = mysqli_fetch_array($result) )  
  {  
    printf( '<option value=\'%s\'>%s&nbsp;%s</option>'
      , $row["sugeneruoja"]
      , $row["pavadinimas"] 
      , $row["sugeneruoja"] 
      );
  }
}
echo( '</select>' ); 
echo( '<input type="submit" name="submit" value="Apskaičiuoti">' ); 
echo( '</form>' ); 

Regards, 
   Phill  W.

 

[NotionCommotion]

Try this:

echo 'blablabla '.$row["sugeneruoja"];

 or better yet, var_dump($row["sugeneruoja"]);  Forgot why, but echoing an integer by itself sometimes isn't displayed.