Colored Table, Row and Column Headers In Textview.

<?php
// Definition of widgets
$scrolled_win = new GtkScrolledWindow();
$textview = new GtkTextview();
$buffer = new GtkTextBuffer();
$win = new GtkWindow();

// Modify widgets
$scrolled_win->set_policy(1,1);
$textview->modify_font(new PangoFontDescription('Courier New  14'));
$win->maximize();
$win->connect_simple('destroy', array('Gtk', 'main_quit'));
        
// Pack widgets
$scrolled_win->add($textview);
$textview->set_buffer($buffer);
$win->add($scrolled_win);

/*** Get tags table ***/
$tag_table = $buffer->get_tag_table(); 

/*** Create and add tag ***/
// underline
$tag_underline = new GtkTextTag();    
$tag_underline->set_property('underline', Pango::UNDERLINE_SINGLE);
$tag_table->add($tag_underline);
// blue
$blue_tag = new GtkTextTag();
$blue_tag->set_property('foreground', "#0000ff");
$tag_table->add($blue_tag);
// bold
$tag_bold = new GtkTextTag();
$tag_bold->set_property('weight', Pango::WEIGHT_BOLD);
$tag_table->add($tag_bold);
// highlight
$tag_highlight = new GtkTextTag();
$tag_highlight->set_property('background', "#d9dae7");
$tag_table->add($tag_highlight);
// highlight2
$tag_highlight2 = new GtkTextTag();
$tag_highlight2->set_property('background', "#ccff99");
$tag_table->add($tag_highlight2);


/*** Create sample data ***/
$matrix;
for($i=0; $i<60;$i++)
{
    $count=rand(6,48);
    for($j=0;$j<$count;$j++)
        $matrix[$i][$j] = rand(-100,333);
}

/*** Decide length of the maximum element, add 2 extra spaces ***/
define(INDENT,1);
$len = strlen((string)array_get_max($matrix))+INDENT;


    /*** Add the left corner ***/
    $buffer->insert_at_cursor('row\col');
    $start = $buffer->get_start_iter();
    $end  = $buffer->get_end_iter();
    $buffer->apply_tag($tag_underline, $start, $end);
    $buffer->apply_tag($tag_bold, $start, $end);
    $buffer->apply_tag($tag_highlight, $start, $end);
    
    /***  Add coloumn header ***/
    $count=0;
    foreach($matrix as $row)
        $count=($count>=count($row))?$count:count($row);
    for($i=0; $i<$count; $i++)
    {            
        //Insert the header
        $buffer->insert_at_cursor($header = str_pad('c'.$i, $len , ' ', STR_PAD_LEFT));
        $start = $buffer->get_end_iter();
        $start->backward_chars(strlen($header)-INDENT);
        $buffer->apply_tag($tag_underline, $start, $buffer->get_end_iter()); 
        $buffer->apply_tag($tag_bold, $start, $buffer->get_end_iter()); 
        $buffer->apply_tag($tag_highlight, $start, $buffer->get_end_iter()); 
    }

    $buffer->insert_at_cursor("\n");
        
    foreach($matrix as $row_key => $row)
    {
        /*** Insert row head ***/
        $buffer->insert_at_cursor($header = str_pad('r'.$row_key, strlen('row\col') , ' ', STR_PAD_LEFT));
        $start = $buffer->get_end_iter();
        $start->backward_chars(strlen($header)); 
        $buffer->apply_tag($tag_underline, $start, $buffer->get_end_iter()); 
        $buffer->apply_tag($tag_bold, $start, $buffer->get_end_iter()); 
        $buffer->apply_tag($tag_highlight, $start, $buffer->get_end_iter()); 
        
        /*** Insert cell ***/    
        for($i=0;$i<$count;$i++)
        {
            if(isset($row[$i]))
                $cell = $row[$i];
            else
                $cell = '';
            $buffer->insert_at_cursor($cell = str_pad($cell, $len , ' ', STR_PAD_LEFT));
            $start = $buffer->get_end_iter();
            $start->backward_chars(strlen($cell)-INDENT); 
            $buffer->apply_tag($tag_highlight2, $start, $buffer->get_end_iter()); 
        }
        //next line
        $buffer->insert_at_cursor("\n");
    }

    
$win->show_all();
Gtk::main();
        

    
function array_get_max($matrix)
{    
    
    //initialize max
    traverseArrayGetFirstValue($matrix,$max);
    //find max
    traverseArrayGetMax($matrix,$max);
    //return max
    return $max;
}//function


    function traverseArrayGetFirstValue($array, &$fv)
    {     
        foreach($array as $key=>$value)
            if(is_array($value))
                traverseArrayGetFirstValue($value,$fv); 
            elseif($fv == null)
                return $fv = $value;
            else
                return $fv;    
    }//function
    function traverseArrayGetMax($array, &$max)
    { 
        foreach($array as $key=>$value)
            if(is_array($value))
                traverseArrayGetMax($value,$max); 
            elseif($value>$max)
                $max = (float)$value; 
    }//function
?>