How can I replace braces with <?php ?> in php file?

Question

I wanna replace braces with in a file with php extension. I have a class as a library and in this class I have three function like these:

Answer 1

do this:

function parser($view,$data)
{
    $data=array("data"=>$data);
    $template=file_get_contents(APP_DIR.DS.'view'.DS.$view.'.php');
    $replace = array();
    foreach ($data as $key => $value) {
        #if $data is array...
        $replace = array_merge(
            $replace,array("{".$key."}"=>$value)
            );
    }

    $template=strtr($template,$replace);
    echo $template;
}

and ignore other two functions.