Save php code in database

Well, I'll advise that do this instead:

1. Use relative links structure for links that are within the main url, which in your case is the `base_url()` function. So, your link within the post content should be something like so:

Code:

<a href="/blog/post-slug">text in link</a>

2. Use absolute link structure only when the link is redirecting to an external website, like so

Code:

<a href="https://google.com">text in link</a>