dynamic drop down menu in php

[aliyesami]

hi !

below is a simple html code which lets a user input a value and then passes it to a php program which runs a sql querry againt an oracle database displaying the result set.
what I would like to do is to be able to offer a drop down list of values to select from ( which will come from a table in oracle) instead of the user remembering n entering a value, how can i achieve that ?

thanks
Sami

--------------------------------------------- form2.html -----------------------------------------------------------------

<form method="POST" action="select2.php">
<div align="left"><p><font face="BankGothic Md BT">host name?</font>
<input type="text" name="host" size="14"><input type="submit" value="Submit"></p>
</div></form>

---------------------------------------------- select2.php -----------------------------------------------------------

<?php

$host = $_POST["host"];
$hostname=strtoupper($host);

  $conn = oci_connect('SAMI', 'SAMI', 'emrep');
  if (!$conn) {
    $e = oci_error();
    print htmlentities($e['message']);
    exit;
  }

  $query = "SELECT * FROM INSTANCE where HOST_ID in (select HOST_ID from HOST_LOOKUP where HOST_NAME='$hostname')" ;

  $stid = oci_parse($conn, $query);
  if (!$stid) {
    $e = oci_error($conn);
    print htmlentities($e['message']);
    exit;
  }

  $r = oci_execute($stid, OCI_DEFAULT);
  if (!$r) {
    $e = oci_error($stid);
    echo htmlentities($e['message']);
    exit;
  }

  print '<table border="1">';
  while ($row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS)) {
    print '<tr>';
       foreach ($row as $item) {
         print '<td>'.($item?htmlentities($item):'&nbsp;').'</td>';
       }
       print '</tr>';
  }
  print '</table>';

  oci_close($conn);
?>

[Walkere]

what I would like to do is to be able to offer a drop down list of values to select from ( which will come from a table in oracle) instead of the user remembering n entering a value, how can i achieve that ?

In HTML, what you're looking for is the <select> tag. This creates a dropdown list, like...

<select>
    <option value="value">Text</option>
    <option value="value">Text</option>
</select>

So what you need to do is get the result set from your database, loop through the result set, and create an <option> tag for each item in the result set.

I'm not familiar with the Oracle functions, so you'll have to create the query and what not yourself, but here's the idea.

$query = "SELECT value, text FROM table WHERE condition = TRUE";
$result = oci_execute($query, OCI_DEFAULT);

echo '<select>';

while ($row = oci_fetch_array($result)) {
   echo '<option value='" . $row['value'] . '">' . $row['text'] . '</option>';
}
echo '</select>';

Hopefully you get the concept out of that, and you can fill in the right query/oracle functions to get it to work.

The steps are basically...

• Write query
• Execute query
• Open the <select>
• Loop through query results
• Print an option for each value in the query result set
• Close the <select>

Good luck,
- Walkere

[daneuchar]

@Walkere

Dude you rock ... i was like googling!! since a long time..! to make my dynamic menu for a small project to get.. values from mysql.. but this helped me a lot :)

echo '<option value='" . $row['value'] . '">' . $row['text'] . '</option>';

thanx again

[sarper]

well this code rocks,
how do i use the selected value in another query? for example i have
Value text
1 A
2 b
3 c

after user select "b" how do i use "2" in anther query
how do i get the value?