Description:
------------
The function eregi doesn't work if my compare string is ".info", ".name" or ".net"

Reproduce code:
---------------
if (eregi("[.aero]$",$domain_name)) {
    echo "domain is aero";
}elseif (eregi("[.com]$",$domain_name)) {
    echo "domain is com";
}elseif (eregi("[.info]$",$domain_name)) {
    echo "domain is info";
}elseif (eregi("[.name]$",$domain_name)) {
    echo "domain is name";
}elseif (eregi("[.net]$",$domain_name)) {
    echo "domain is net";}


Expected result:
----------------
$domain_name = "domain.aero";
echo domain is aero

$domain_name = "domain.com";
echo domain is com

$domain_name = "domain.info";
echo domain is info

$domain_name = "domain.name";
echo domain is name

$domain_name = "domain.net";
echo domain is name



Actual result:
--------------
$domain_name = "domain.aero";
echo domain is aero

$domain_name = "domain.com";
echo domain is com

$domain_name = "domain.info";
echo 

$domain_name = "domain.name";
echo 

$domain_name = "domain.net";
echo