Hi Rene,
This looks suspiciously like regex's "greedy" behaviour - it will
gobble up everything that matches until you tell it otherwise.
For example, your regex is matching "any character that isn't a dot,
followed by a dot."
In host.domain.com, both "host." and "domain." match this regex - and
because your regex is "greedy" it's grabbing both, leaving you with
"com".
Try adding the "ungreedy" modifier to your regex, like so: $domain =
preg_replace( '/[^.]*\./U' , '', $host); (note the additional U in
your regex.)
HTH,
Andy
On 29 October2009, at 20:33, Red wrote:
hello, im not a php developer, i just need to rewrite one php file
but having problem with understanding syntax of regexp in php.
i need to get domain name from fqdn (for example from $_SERVER
['HTTP_HOST'] )
in sed its working well with "s/[^.]*\.//" , but preg_replace
behaves weird.
http_host is for example hostname.domain.com
<?php
$host = $_SERVER['HTTP_HOST'];
exec( "echo $host | sed s/[^.]*\.//", $domain ) ;
echo "$domain[0]"
?>
return "domain.com", but
<?php
$host = $_SERVER['HTTP_HOST'];
$domain = preg_replace( '/[^.]*\./' , '', $host) ;
echo "$domain";
?>
return only "com"
i think when this php page get many hits, its not so wise to call
sed everytime, i would like to ask someone for help how to write
preg_replace pattern.
thanx
Rene
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