Keep the selected value for dropdown after submit

Hi,

I have a problem with keep the selected value for dropdown after submit.

I have this php code and i don´t know how to retain the selected value after submit

It works ok. But, when script made its work I lose values in boxes, previously selected.

<form name="search" action="" method="get"><select name="cp_state">
  <?php
  $metakey = 'cp_state';
  $counties = $wpdb->get_col($wpdb->prepare("SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE meta_key = %s ORDER BY meta_value ASC", $metakey) );
  if ($counties) {
    foreach ($counties as $cp_state) {
      echo "<option value=\"" . $cp_state . "\">" . $cp_state . "</option>";
	  $metakey .= ' selected';
    }
  }
  ?>
</select>
<input type="submit" value="search" />
</form>

Code (markup):

Thank you in advance

 

try this

<form name="search" action="" method=""><select name="cp_state">
  <?php
  $metakey = 'cp_state';
  $counties = $wpdb->get_col($wpdb->prepare("SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE meta_key = %s ORDER BY meta_value ASC", $metakey) );
  if ($counties) {
    foreach ($counties as $cp_state) {
      echo "<option value=\"" . $cp_state . "\"";
       if ($_POST['cp_state']==$cp_state) {
            echo "selected=\"selected\"";
       }
      echo ">" . $cp_state . "</option>";
	  $metakey .= ' selected';
    }
  }
  ?>
</select>
<input type="submit" value="search" />
</form>

PHP:

 

Hi,

Thank you for your help but he doesen't work.
He always goes to the first value of drop down.

 

You can use selected value in the session and use that value as selected if session variable is exist using isset function