Derp to table

derp-to-table.php

<?php

$input = trim('
1.  Max Havelaar                12.7    14.8    13.3
2.  Michiel [b]de[/b] Ruiter           14.4    11.8    13.3  14.4
3.	Awesome Stuff and others	15.568	11.3	12.1
');

function parse_table($input)
{
    $rows = array();
    
    foreach (explode("\n", $input) as $line)
        $rows[] = preg_split("/\t+| {2,}/", trim($line));
    
    $n_of_columns = max(array_map('count', $rows));
    
    $html = "<table>\n";
    foreach ($rows as $row)
    {
        $html .= "\t<tr>\n";
        
        for ($col = 0; $col < $n_of_columns; ++$col)
            $html .= "\t\t<td>" . (isset($row[$col]) ? parse_ubb($row[$col]) : "") . "</td>\n";
        
        $html .= "\t</tr>\n";
    }
    $html .= "</table>\n";
    
    return $html;
}

function parse_ubb($input)
{
    $input = preg_replace('/\[b\](.+?)\[\/b\]/', '<strong>$1</strong>', $input);
    
    $input = preg_replace_callback('/\[table\](.+?)\[\/table\]/m', function ($matches) {
        return parse_table($matches[1]);
    }, $input);
    
    return $input;
}

echo parse_table($input);