Is there a way that i could submit a site to search engines using php?

Theres a function on CPanel if your server has that?

submitting to search engines will do absolutely nothing. You should submit to directories.

Like my site. Whenever i add something to my site it automatically creates an html file of it. But the problem is that google and some other search engines dont crawl on these pages even though there are links of them on my main page. Is there i way i could automatically send that page to these search engines?

If the SEs don't crawl deeper into your site it's either a problem with your navigation or there are not enough backlinks to trigger a deeper crawl (Google)