Question

I have 2 tables Table 1 and Table 2 .

What I expect is the below format.
Required format

Table 1    
   ID   Title   S_ID    
   1    Option1   2    
   2    Option2   2    
   3    Option3   1  

Table 2       
   S_ID  SNAME    
   1     Name1    
   2     Name2    
   3     Name3    

But I am getting a null value for S_ID of Table1.

Table 1    
   ID   Title   S_ID    
   1    Option1   NULL    
   2    Option2   NULL    
   3    Option3   NULL

Table 2    
   S_ID  SNAME    
   1     Name1    
   2     Name2    
   3     Name3    

Here is my code:

HTML :

<select name=sid>
<option value="select"></option>
<option value="N1">Name1</option>
<option value="N2">Name2</option>
<option value="N3">Name3</option>
</select>    

Insert.php

$title=$_POST['title'];
$sid=$_POST['S_ID'];    
$insertquery="INSERT INTO review (title) VALUES('$title')";    

What I need is when I select any name from drop down, the id of that from Table 2 should get stored in Table 1 as shown in the above required format, and retrieve the titles that comes under respective names on click of particular name.

Do help by writing required code. Thank You.

Answer 1

IMHO your INSERT statement should look like this:

$insertquery = "INSERT INTO review (title, S_ID) VALUES('$title', '$sid')";

And you definitely need to consider sanitizing input and using prepared statements.

Update:

You can populate your select with options from Table 2 (and assuming that you use mysqli) you can do something like this:

<?php

$db = new mysqli("host", "user", "password", "db");

$qry = "SELECT * FROM Table2";
$result = $db->query($qry);
echo "<select name=\"S_ID\">";
echo "<option value=\"select\" selected=\"selected\">Select a name</option>";
while ($row = $result->fetch_array(MYSQL_ASSOC)) {
    echo "<option value=\"" . $row['S_ID'] . "\">" . $row['SNAME'] . "</option>";
}
echo '</select>';
$result->close();
$db->close();

?>

For sake of brevity and simplicity there are no checks.