How to integrate CDN in existing codeigniter Project

Question

How to integrate content delivery network in existing codeigniter Application. So that base-url needs to point main server and resource-url (like images, css, js etc) need to point cdn server.

All images are linked with absolute path like below

<img src="<?php echo base_url("media/images/image_name.jpg"); ?>" alt="StackOverflow" >

And the Result will be like below

<img src="http://example.com/media/images/image_name.jpg" alt="StackOverflow" >

Here i need to replace example.com with cdn.example.com.

Do i need to edit manually in all places?

Thanks for Helping.

Answer 1

We need to create one helper method like below

function cdn_base_url() {
    $url = base_url();
    if(is_cdn_integrated){
        $url = 'http://cdn.example.url.com/';
    }
    return $url;
}

And we need to call that method in view files like below instead of calling with base_url().

<img src="<?php echo cdn_base_url()."media/images/image_name.jpg"; ?>" alt="StackOverflow" >