PHP dropdown default value

Question

I have this code,How would you set a default selection in this dropdown menu.

<tr><td class="tdt">

<?php te('Hypervisor');?>:</td> <td title='Add more from Hypervisor menu'>
<select validate='required:true' class='mandatory' name='hyp'>
   <option value=''>Select</option>
  <?php 
    foreach ($hyper as $a) {
      $dbid=$a['id'];
      $atype=$a['typedesc']; $s="";
      if (isset($hyp) && $hyp==$a['id']) $s=" SELECTED ";
      echo "<option $s value='$dbid' title='$dbid'>$atype</option>\n";
    }
    echo "</select>\n";
  ?>

Thanks for your help.

UPDATE:

I have a table connected to this code called hypervisors.in that table theres id field and typedesc field.I'd like to set "ESXi" as the default value which is represented by an ID num 1.

Update 2:

$sql="SELECT id,typedesc FROM hypervisors";
$sth=db_execute($dbh,$sql);
while ($r=$sth->fetch(PDO::FETCH_ASSOC)) 
    $hyper[$r['id']]=$r;

that is SQL query

This exact way. Side note: when you are generating HTML, always htmlspecialchars any dynamic content. — Jon
– Jon, Commented Sep 26, 2013 at 8:48

Code Lღver · Accepted Answer · 2013-09-26 08:58:25Z

3

use this:

  foreach ($hyper as $a) {
      $dbid=$a['id'];
      $atype=$a['typedesc'];
      if (isset($hyp) && $hyp==$dbid) {
         echo "<option selected='selected' value='$dbid'>$atype</option>\n";
      } else {
         echo "<option value='$dbid'>$atype</option>\n";
      }

    }

edited Sep 26, 2013 at 8:58

answered Sep 26, 2013 at 8:52

Code Lღver

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5 Comments

Carter Over a year ago

thanks for your reply .Your code did work but it won't select anything as default or do i have to set the default value myself.thanks

Code Lღver Over a year ago

@Carter this is because of your condition $hyp==$dbid is not working. check that $hyp has some value or not.

Carter Over a year ago

Thanks Broken Heart ღ.My code work perfectly without the default value.Its just it'd be convenient to set default so the user can easily navigate the form without making a whole lot of selections

Code Lღver Over a year ago

@Carter ohk, my pleasure to help you. in future you can ask for other problems solution.

MiniGunnR Over a year ago

Also, adding this logic with the ternary operators lessens the code within one line. :)

Adam · Accepted Answer · 2013-09-26 09:17:39Z

1

With selected within the option tag, you set the selected default value of your dropdown http://www.w3schools.com/tags/att_option_selected.asp

if (isset($hyp) && $hyp==$a['id']){
      $s=" SELECTED ";
      echo "<option $s value='$dbid' selected>$atype</option>\n";
}
else {
     echo "<option value='$dbid'>$atype</option>\n";
}

edited Sep 26, 2013 at 9:17

Adam

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answered Sep 26, 2013 at 8:52

Rikan

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2 Comments

Carter Over a year ago

thanks for reply but the code didn't work i'm getting a syntax error. appreciate your help

Rikan Over a year ago

Did you replace your if (isset($hyp) && $hyp==$a['id']) $s=" SELECTED "; echo "<option $s value='$dbid' title='$dbid'>$atype</option>\n"; with mine?

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