Combo box in php?

[7724]

Hi Guys,

I have a list of areas in a DB and want to call these out to a Combo Box:

id | area

1 |Slough
2 |Burnham

Now I thought the below code would output these, but it does not

<?php

include("******");

function get_areas()
{
   $query = 'SELECT *
             FROM areas
             ORDER BY area';
   $result = @mysql_query($query);
   if (!$result)
     return false;
   $num_areas = @mysql_num_rows($result);
   if ($num_areas ==0)
      return false;
   $result = db_result_to_array($result);
   return $result; 
}

?>

<select class="input" name="area" id="area">
<option value="" selected> </option>
<?php
  $area_array = get_areas();
  foreach ($area_array as $thisarea)
    {
      echo '<option value="';
      echo $thisarea['area'];
      echo '">';
      echo $thisarea['area'];
      echo '</option>';
    }
?>
</select>

Can anyone please advise?

Thanks

Chris

[WDPEjoe]

First, take the @ away from the mysql function calls to see if there are errors being generated there.

Second, the only other place I could see that it could be broken is the db_result_to_array() function. Otherwise, it looks fine to me.

[rincewind456]

Have you done any debugging?

Do some [man]print_r/man's to see if the arrays are being populated.

Have you checked to see if the function db_result_to_array() is included in your include files.

[ghettopixel]

Assuming that the key areas is what you are trying to get and that function groups each field into a multi dimensional array (example $value['fieldname'][1]) you want to try this.

<?PHP
include("wtf.php");
function get_areas() {
	$query='SELECT * FROM areas ORDER BY area';
	$result=mysql_query($query);
	if(FALSE==$result)
		return false;
	if((0 || FALSE)==mysql_num_rows($result)) {
		return false;
	} else {
		$result=db_result_to_array($result);
		return $result;
	}
}

?>
<select class="input" name="area" id="area">
<option value="" selected> </option>
<?PHP
$area_array=get_areas();
foreach ($area_array['area'] as $thisarea) {
	print("<option value=\"{$thisarea}\">{$thisarea}</option>";
}
?>
</select>

[7724]

Thanks,

But getting Invalid argument supplied for foreach().

Tried changing my db structure names and also:

foreach ($area_array[$the_region] as $thisarea) {

But I still have problems

Any ideas?

Thanks

<?PHP 
include("**************");

function get_areas() { 
    $query='SELECT * FROM prop_area ORDER BY the_region'; 
    $result=mysql_query($query); 
    if(FALSE==$result) 
        return false; 
    if((0 || FALSE)==mysql_num_rows($result)) { 
        return false; 
    } else { 
        $result=db_result_to_array($result); 
        return $result; 
    } 
} 

?> 
<select class="input" name="area" id="area"> 
<option value="" selected> </option> 
<?PHP 
$area_array=get_areas(); 
foreach ($area_array[$the_region] as $thisarea) { 
    print("<option value=\"{$thisarea}\">{$thisarea}</option>");
} 
?> 
</select> 

[rincewind456]

Did you do any of what I suggested in my earlier post?

[7724]

Yes I did Thank you,

Here's my db_result_to_array function (not in the include file). Does this help anyone help me solve my problem?

Thanks

<?PHP 
include("**************"); 


function db_result_to_array($result)
{
   $res_array = array();

   for ($count=0; $row = mysql_fetch_array($result); $count++)
     $res_array[$count] = $row;

   return $res_array;
}

function get_areas() { 
    $query='SELECT * FROM prop_area ORDER BY the_region'; 
    $result=mysql_query($query); 
    if(FALSE==$result) 
        return false; 
    if((0 || FALSE)==mysql_num_rows($result)) { 
        return false; 
    } else { 
        $result=db_result_to_array($result); 
        return $result; 
    } 
} 

?> 
<select class="input" name="area" id="area"> 
<option value="" selected> </option> 
<?PHP 
$area_array=get_areas(); 
foreach ($area_array[$the_region] as $thisarea) { 
    print("<option value=\"{$thisarea}\">{$thisarea}</option>"); 
} 
?> 
</select>

[MarkR]

HTML does not support combo-boxes. To create a combo-box, some complicated Javascript would be required.

Of course, if you mean a LIST BOX, the kind created by the "select" element, that is something completely different.

A combo box is a little-used Windows control which allows the selection of a value from a dropdown list OR a free-text entry. This is probably not what you mean (judging from the above).

Mark

[rincewind456]

Had you done as I said about using [man]print_r/man you would probably have seen the problem.

Assuming that area is called area in your database then this change to your foreach loop

foreach ($area_array as $thisarea) {
	//print_r($thisarea);
   print("<option value=\"".$thisarea['area']."\">".$thisarea['area']."</option>\n");
}

should give results like this

<select class="input" name="area" id="area">
<option value="" selected> </option>
<option value="burnham">burnham</option>
<option value="leeds">leeds</option>
<option value="slough">slough</option>
<option value="hythe">hythe</option>
</select>