Re: Warning: eregi() [function.eregi]: REG_ERANGE in ...

OK, I don't think I searched the web hard enough. I've not found a definitive explanation, but I think the warning has something to do with the dash symbols (\-) within the square brackets. Removing them - changing them to the regular expression below - removes the warning '^[a-zA-Z0-9_.]+@[a-zA-Z0-9]+\.[a-zA-Z0-9.]+$' Question is now, how am I supposed to match dash symbols? In one thread I read advised preg functions using the ereg functions. I had ago with this, putting back in the dashes and changing the regular expression to a perl RE: '/^[a-zA-Z0-9_\-.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-.]+$/' No warnings this time and it appears to work. I still welcome any feedback on ereg if anyone wants to give any. On 17/01/2008, Dan Stevens (IAmAI) <dan.stevens.iamai@gmail.com> wrote: > I'm have trouble with some code that I have been following in a book > regarding regular expressions. I'm attempting to validate an email > using a regular expression. Below is a simplified version of the code > which reproduces the problem I'm having: > > <?php > define("EMAIL_RE", > '^[a-zA-Z0-9_\-.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-.]+$'); > $email = trim($_GET['email']); > $result = eregi(EMAIL_RE, $email); > echo $result . "<br />\n"; > if ($result) echo "Email valid"; > else "Email invalid" > ?> > > Calling this code with the argument get=bob@example.com, I'd expect an > interger output something like this > > 15 > Email valid > > Yet instead, all get is a warning that I cannot fathom and nothing else: > > Warning: eregi() [function.eregi]: REG_ERANGE in C:\Documents and > Settings\daniel.stevens\My > Documents\Workspace\htdocs\tutoring\eregi_test.php on line 4 > > I've tried searching for this warning to find out what it means, but I > cannot find any reference to it on the web. Is anyone able to tell me > what this warning means and why I am not getting the output I'm > expecting? Can anyone advise how best to find out what a particular > error or warning means so I don't have to ask on this list everytime I > come across one that means nothing? php.net does not appear to have a > list. > > Thanks in advance. >