Pass a variable with html content into parser

[eluser]Sara rad[/eluser]
Hi everyone

i have a variable with html content like it :

Code:

$data['usrename'] = 'sara';
$tpl = '<p style="color:red">{username}</p>';

how can i use this in parser library instead of a template file ?

[eluser]Sara rad[/eluser]
this way workd but im looking for better way :

Code:

$data['content'] = '<p style="color:red;">Hi {username} , welcome to our site</p>';

$fh = fopen('application/views/file.tpl', 'w') or die("can't open file");    
fwrite($fh, $data['content']);
fclose($fh);

$data['username'] = 'sara';

$this->parser->parse('file.tpl',$data);

[eluser]Sara rad[/eluser]
Any idea ?