check if a site exists with PHP

Question

is there a script in php to check if a site exists in the world wide web?

submit a url
script check if site is existing
return true if it does

http://stackoverflow.com/questions/1545432/what-is-the-easiest-way-to-use-the-head-command-of-http-in-php — jason, Nov 16 '09 at 07:03

score 2 · Accepted Answer · answered Nov 16 '09 at 07:04

2

Here is an implementation using CURL:

Check website status using php and CURL library

answered Nov 16 '09 at 07:04

Andrew Hare

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score 1 · Answer 2 · answered Nov 16 '09 at 07:04

1

You can just try to issue an HTTP request and see if something comes back.

answered Nov 16 '09 at 07:04

Joey

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uh...sorry for the noob question but what headers do I have to check to see if something comes back? – yretuta Nov 16 '09 at 07:05
Well, a response code of 200 would be a good start. And if no site exists then you'll probably not get anything but an error or a timeout. – Joey Nov 16 '09 at 07:11

score 0 · Answer 3 · answered Nov 16 '09 at 07:08

Whilst firing off an HTTP request will tell you if a site exists, it doesn't tell you whether the domain has been registered but is not currently in use. If this is something that you'd need to be able to do, you need to use a WHOIS service to check whether the domain is registered or not.

check if a site exists with PHP

3 Answers3