My last sentence was saying that if the submitted address to test end with a Greater-Than, then (a) we require that ONE Less-Than character exist somewhere earlier in the string; and (b) if it does, then we extract and test just the substring between the Less-Than character and the terminating Greater-Than.

There’s a pretty basic failure in the original code posted here on May 2, 2006: Per the RFC (2822, Section 3.4) an address or person’s “display-name” can precede the traditional addr-spec which this code tests, as long as the addr-spec is then enclosed in Greater-Than Less-Than signs thus:

“”

We’ve all seen it a million times, an address such as this one:
Rick Stockton

It fails your function. In the case of such as email, we need to test only the portion between “”.

I can’t program worth sh#^. But, I think the thing to do is check for “>” as the last char, and if it exists then (a) require that “

if (!ereg(”^\[?([0-9]{1,3}\.){3}[0-9]{1,3}\]?$”, $email_array[1])) {
if (!ereg(”^([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9]\.)+([A-Za-z]{2,4}|museum|travel)$”, $email_array[1])) {
return false;
}
// TODO: the domain part is syntacticly valid, now do the reverse DNS
// full domain in $email_array[1]
}

i think “ds@23.2312″ is not valid email address but valid_email(’ds@23.2312′) returns TRUE

With best wishes,
Taaniel