verify URL is live and running or not
<p>I will be taking URL from user. Now I need to verify whether address is live or not.</p>

<p>For example:</p>

<p>If user enters "google.com", then I will pass "google.com" as argument to some function, and function will return me TRUE if URL is live, upload and running, otherwise FALSE.</p>

<p>Any in-built function or some help.</p>
