Setting the User Agent in your PHP code
Web2 and caching example from a Well House Consultants training course
More on Web2 and caching [link]
Source code: pset.php Module: H307
# Default user agent
$c1 = file_get_contents("http://www.wellho.net/robots.txt");
# An agent string that declares that we're a robot
ini_set("user_agent","Well House Robot - see http://www.wellho.net");
$c2 = file_get_contents("http://www.wellho.net/robots.txt");
# Pretending to be a regular browser
# (consider carefully before you do this!)
ini_set("user_agent","Opera/9.80 (Windows NT 6.1; U; Edition Campaign 21; en-GB) Presto/2.7.62 Version/11.00");
$c3 = file_get_contents("http://www.wellho.net/robots.txt");
# From our server log file when I tested this:
# 18.104.22.168 - - [18/Dec/2010:19:44:36 +0000] "GET /robots.txt HTTP/1.0"
# 200 2526 "-" "-"
# 22.214.171.124 - - [18/Dec/2010:19:44:37 +0000] "GET /robots.txt HTTP/1.0"
# 200 2526 "-" "Well House Robot - see http://www.wellho.net"
# 126.96.36.199 - - [18/Dec/2010:19:44:38 +0000] "GET /robots.txt HTTP/1.0"
# 200 2526 "-" "Opera/9.80 (Windows NT 6.1; U; Edition Campaign 21; en-GB) Presto/2.7.62 Version/11.00"
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