zerocaffe.in Blog of Uncaffeinated Experiences on Entrepreneurship and Everything Else

require 'table_helper.lib.php';
 
################# FOR UNIT TESTING THE FUNCTION #######################
function url_logos($profile_id) {
  switch($profile_id) {
    case 1: return "abcde"; break;
    case 2: return "vwxyz"; break;
    default: return "NONE"; break;
  }
}
 
$Data = array(
  array('john', 'john carmack', 1, 75, '2008-12-1 00:0:00'),
  array('galt', 'john galt', 2, 2, '2008-06-06 06:06:06'),
  array('dagny', 'dagny taggart', 1, 180, '2008-11-00 00:0:00'),
  array('hank', 'hank rearden', 2, 200, '2008-06-02 06:06:06'),
  array('roark', 'howard roark', 1, 0, '2008-12-1 00:0:00'),
  array('john', 'john carmack', 1, 75, '2008-12-1 00:0:00'),
);
$Headers = array('Alias', 'Name', 'Profile', 'Games', 'Joining Date', 'Square');
$Templates = array(
  '"<b>{$data[0]}</b>"',
  '$data[1]',
  '"http://www.someurl.com/profile.php?id={$data[2]}&name={$data[0]}"',
  '"<a href=\"http://www.someurl.com/games/played.do?num={$data[3]}\">{$data[3]}</a>"',
  '$data[4]',
  'url_logos($data[2]);'
);
 
TableHelper::Render($Headers, $Templates, $Data);

class TableHelper {
        /**
         * @func   Render($Headers, $Templates, $Data, $Prefix = 'data')
         * @desc   renders a table for the given data and the cell templates given.
         * @param1 $Headers a string array of table column headers
         * @param2 $Templates string of cell templates. The data bucket should be named 
         *         as data in the default case. If you think of any other name be sure
         *         to pass the correct prefix to the function.
         * @param3 $Data Data to fill the templates with.
         * @param4 $Prefix Default bucket for row data is 'data'. Can be anything else.
         * @note   This function now builds a template file instead of using eval.
         */
        static function Render($Headers, $Templates, $Data, $Prefix = 'data') {
                $NumCols = count($Headers);
 
                echo '< table>';
                echo '< tr>';
                        foreach ($Headers as $header)
                                echo '< th>'.$header.'< /th>';
                echo '< /tr>';
 
                foreach ($Data as $$Prefix) {
                        echo '< tr>';
                        for ($i = 0; $i < $NumCols; $i++) {
                                        eval("\$_cell=\"$Templates[$i]\";");
                                        echo '< td>',$_cell,'';
                        }
                        echo '< /tr>';   
                }
                echo '';
        }
}

# BEGIN Section Table Template Caching Section
define(CACHED_TEMPLATES_FOLDER, './cache/');
 
class TableHelper {
        /**
         * @func CachedFilePath($Id)
         * @desc The table template cached file is just named as unique id.tpl.php
         *       in the CACHED_TEMPLATES_FOLDER folder.
         */
        static function CachedFilePath($Id) {
                return CACHED_TEMPLATES_FOLDER.$Id.'.html.php';
        }
 
        /**
         * @func BuildTemplate($Id, $Headers, $Templates)
         * @desc Generates the php code for rendering the table and writes the
         *       table generation view code template to the cached folder.
         */
        static function BuildTemplate($Id, $Headers, $Templates) {
                assert(is_writeable(CACHED_TEMPLATES_FOLDER)) or die('Error THL001: Cache Folder has no Write Permissions.');
 
                $str = '';
 
                /* Build the Table Rendering PHP Code String */
                $str .= "< table>\n";
                $str .= "< tr>\n";
                        foreach ($Headers as $header)
                                $str .= "< th>$header< /th>\n";
                $str .= "< /tr>\n";
 
                $str .= '< ? php foreach ($Data as $$Prefix) { ?>';
                        $str .= "< tr>\n";
                        foreach ($Templates as $template)
                                $str .= "< td>< ?= $template ?>< /td>\n";
                        $str .= "< /tr>\n";
                $str .= "< ? php } ?>\n"; 
                $str .= "\n";
 
                $handle = fopen(TableHelper::CachedFilePath($Id), 'w'); 
                        fwrite($handle, $str);
                fclose($handle);
 
                return true;
        }
        # END Section Table Template Caching Section

        /**
         * @func   Render($Id, $Headers, $Templates, $Data, $Prefix = 'data')
         * @ver    1.2
         * @desc   renders a table for the given data and the cell templates given.
         * @param1 $Headers a string array of table column headers
         * @param2 $Templates string of cell templates. The data bucket should be named 
         *         as data in the default case. If you think of any other name be sure
         *         to pass the correct prefix to the function.
         * @param3 $Data Data to fill the templates with.
         * @param4 $Prefix Default bucket for row data is 'data'. Can be anything else.
         * @note   This function now builds a template file instead of using eval.
         */
        static function Render($Id, $Headers, $Templates, $Data, $Prefix = 'data') {
                $NumCols = count($Headers);
 
                /* Attempt to just include the cached template file for this table */
                $cached_file_path = TableHelper::CachedFilePath($Id);
                if(!file_exists($cached_file_path)) 
                        TableHelper::BuildTemplate($Id, $Headers,$Templates);
 
                if(file_exists($cached_file_path)) {
                        include_once $cached_file_path; return;
                }
 
                /* If Cached File cannot be created, just do the EVAL way! */
                echo '< table>';
                echo '< tr>';
                        foreach ($Headers as $header)
                                echo '< th>'.$header.'< /th>';
                echo '< /tr>';
 
                foreach ($Data as $$Prefix) {
                        echo '< tr>';
                        for ($i = 0; $i < $NumCols; $i++) {
                                        eval("\$_cell=\"$Templates[$i]\";");
                                        echo '< td>',$_cell,'< /td>';
                        }
                        echo '< /tr>';   
 
                }
                echo '< /table>';
        }
}

TableHelper::Render($Id, $Headers, $Templates, $Data);