php preg_match, how to switch values

Please help with this little issue if you could.

I would like to search a string, if a match is made, I'd like to change the value to something else.

eg.开发者_如何学运维

if (preg_match("gmail",$email)) {

// code needed to switch "gmail" for "googlemail"

}

This is needed because my mail server won't accept an email address in 'gmail.com' format.

Thanks in advance. Shane

if you don't need regular expressions just use str_replace. No need to test either, just replace it.

str_replace( '@gmail.com', '@googlemail.com', $email );

Just so it doesn't match something like mygmail@gmail.com:

$email = preg_replace('/(.+)gmail(\..+)$/', '$1googlemail$2', $email);

Use preg_replace:

preg_replace("gmail", "googlemail", $email);