Get Content-Type of requested url in php

Question

Using php how would I be able to define the variable $type into the content-type of http://www.example.com

For example: $type

Answer 1

Sometimes get_header return wrong values becouse it read http headers, but not file. It should be better use finfo:

$finfo = new finfo(FILEINFO_MIME_TYPE);
$type = $finfo->buffer(file_get_contents($link));