RTL and LTR languages on the same page

[eluser]tomcode[/eluser]
This has nothing to do with CI / PHP

You specify the direction in the HTML tag:

Code:

<p dir="ltr">left to right</p>
<p dir="rtl">right to left</p>

I recommend to also specify the language:

Code:

<p lang="en">english</p>
<p lang="fr">français</p>

See on w3schools.com

There are also direction related CSS pseudo class, see on w3schools.com