how to use multiple jquery version without affecting each other

Put your latest version of jquery at first place then add older version

Then add the following code in your jquery script like this

Ex:
<script type='text/javascript' src='jquery.2.7.1.js'></script>

<script>
            var noconfilct=jQuery.noConflict(true);
</script>

<script type='text/javascript' src='jquery.1.7.1.js'></script>

How to add custom font in code igniter mpdf

1.Download the ttf font file whatever you want

2.Paste it to mpdf/ttffonts folder

3.Then conf_font.php file and add your font in font data array

   Ex."arial" => array( 'R' => "arial.ttf",
'B'=>"arial Bold.ttf",),