Search url wp-rewrite after redirect?

Fatih,

Use str_replace for Turkish chars issue. Change code like this;

/*
Plugin Name: Redirect Search Results
Author: Abdussamad
Plugin URI: http://wordpress.stackexchange.com/questions/70740/search-url-wp-rewrite-after-redirect
*/
class redirect_search_results {
function __construct() {
    add_action( 'init', array( $this, 'redirect' ) );
}

function redirect() {

    if( isset( $_GET[ 's' ] ) ) {
            $turkish= array("İ","ı","Ü","ü","Ö","ö","ğ","Ğ","ş","Ş");
            $nturkish = array("i","i","U","u","O","o","g","Ğ","s","S");
            $quest = str_replace($turkish,$nturkish,$_GET['s']);
        wp_redirect( home_url( '/icerik/' . $quest . '.html' ), 301 );
        exit;
    }
}
}

new redirect_search_results();