Selectbox Converter

This basic application converts select boxes into PHP arrays and provides the output as a array that can be used (with the function of your choice) to determine which option was selected before the form was posted.

Convert Select Box Options to PHP array

Options Results
Values Results
Multi Dimensional array of both Values and Options

PHP Select box generator function

    
    
    <?php
    
    /*-----------------------------------------------------------------------------------------*/
    // http://www.muffinresearch.co.uk/lab/php/
    /*-----------------------------------------------------------------------------------------*/
    function array2select($arr,$sel = '',$usekey=1,$nullvalue='')
    /*-----------------------------------------------------------------------------------------*/
    // This function creates select boxes from arrays.
    //
    // 1. There is an optional parameter to pass in a selected value. If the array value matches the selected
    //    value this item will be selected by default in the generated select box.
    //
    // 2. The default behaviour is for the key of the array to be used as the selectbox value
    //    if this is not required please make $usekey = 0
    //
    // 3. The last optional argument gives you control over a string that you would like the value to be an empty string for.
    //    The obvious example would be the first option if you use something like "Please Select"
    //
    // Check out http://www.muffinresearch.co.uk/lab/php/select2array/ for a means to convert select-box options
    // To a PHP array. Saves ages if you already have the options and you need to make them into arrays.
    /*-----------------------------------------------------------------------------------------*/
    {
            
      while (list( $key, $val ) = each($arr))
      {
        if($sel && $usekey && ($key == $sel || is_array($sel) && in_array($key,$sel)))
        {
          $select_v=" selected='selected'";
        }
        else if ($sel && !$usekey && ($val == $sel || is_array($sel) && in_array($val,$sel)))
        {
          $select_v=" selected='selected'";
        }
        else
         {
          $select_v='';
        }
        
        if($nullvalue != '')
        {
          if ($key == $nullvalue)
          {
            $key = '';          
          }
        }
        
        if ($usekey == 1)
        {
          echo "<option value=\"$key\"$select_v>$val</option>\n";
        }
        else
        {
          if(($nullvalue != '') && ($key == ''))
          {
            echo "<option value=\"$key\"$select_v>$val</option>\n";
          }
          else
          {
            echo "<option$select_v>$val</option>\n";
          }
        }
      }
    }
    
    ?>