PHP中的HEAD请求验证（网络而非语法）URL？

Question

Here is the php.net listing for http_head.

The function prototype is

string http_head ( string $url [, array $options [, array &$info ]] )

A list of $options is here.

I want to use this to validate that a set of URLs is valid.

[url1, url2, url3]

Are there any options that should be set? Is any of the $info relevant to should I just make sure that false is not returned instead of a string?

Answer 1

You probably don't need to set any of the $options, unless you're behind a proxy server or need to do something unusual. You probably should look through them just in case.

It's not likely you need to mess with $info unless you're debugging, since this gives you more complete visibility into the request and response.

Sample code:

foreach ($urls as $url) {
  $response = http_head($url);
  if ($response !== false) {
    # FIXME do something cool
  } else {
    # FIXME hey that url is broken!
  }
}