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PHP Form Select Option pre-checked.

Select boxs and options are a great method of limiting the input from a user on a form to valid data only. However to maintain usability with the interface you really should pre-select the existing value.


print("<form action=\"$PHP_SELF\" method=\"post\">");

print("<select name=\"this_select_field\">");

$query = "SELECT id, field TABLES FROM table_name ";

$result = mysql_query($query, $connection);

while ($myrow = mysql_fetch_row($result)){

     print("<option value=\"$myrow[0]\"");

     if ($myrow[0] == $this_select_field) { print("selected"); }

     print(">$myrow[1]");

}

print ("</select>");

print ("<input type=\"Submit\" name=\"submit\" value=\"Submit\">");

print ("</form>");

Building a select box from an array can be very useful to:

Lets build an array, the key is a certain value corresponding to a users experience.


$user_lvl_array[1] = "Novice";

$user_lvl_array[100] = "User";

$user_lvl_array[200] = "Expert";

$user_lvl_array[300] = "Guru";


print ("<form action=\"\$PHP_SELF\"> method=\"post\">");

print ("<select name=\"new_user_level\">");

foreach ($user_lvl_array AS $key => $value){

         print("<option value=\"$key\"");

         if ($key == $new_user_level) { print("selected"); }

         print(">$value ($key)");

}

print ("</select>");

print ("<input type=\"Submit\" name=\"submit\" value=\"Submit\">");

print ("</form>");

Try it here

$new_user_level
$user_lvl_array[$new_user_level] .

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