[SOLVED] validate emails like test@test

[ratcateme]

I am wanting to validate emails i have searched all over google and stuff i can find plenty of ways to validate emails like test@test.com but they wont validate emails like test@test as well. i am just looking for a expression to validate both at the same time or i can do each like this

if(preg_match(test@test) || preg_match(test@test.com))

so far i have this

^[a-zA-Z0-9_]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$]

i tried to modify it to

^[a-zA-Z0-9_]+@[a-zA-Z0-9\-\.]+$]

but that wont work.

 

Scott.

[ratcateme]

i have got this now

^[a-zA-Z0-9_]+@+[a-zA-Z0-9_]

but it accepts asd_asd@te@st.com as valid

 

Scott.

[sasa]

try

<?php
$test = array('test@test', 'test@test.com', 'test@test@test.com', 'john@google.com.com');
foreach ($test as $a){
echo $a, ' - ';
echo preg_match('/^[a-zA-Z0-9_]+@[a-zA-Z0-9\-]+\.?[a-zA-Z0-9\-]+$/', $a), "<br />\n";
}

?> 

[ratcateme]

thanks for that but my site deals with emails like john@users.sourceforge.net and that says a three part domain is invalid.

 

Scott.

[effigy]

How about this? /^\w+@(?:\w+\.)+\w+$/

[corbin]

How about this? /^\w+@(?:\w+\.)+\w+$/

 

 

 

1 or more letters/numbers

@

1 or more letters/numbers

.

1 or more letters/numbers

 

 

What about john.smith@host.com, or john@users.sourceforge.net (using the earlier example)?  Or am I reading the regexp incorrectly?

[ratcateme]

yea on testing i found john@users.sourceforge.net doesn't work and john.users@sourceforge.net wont work

any other ideas

 

Scott.

[Daniel0]

Try /^(?:\w+.?)+@(?:\w+.?)+$/

[unkwntech]

I'm more interested as to why you want to validate test@test.

This is based on the RFC standard and should catch ANY valid email.

(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(??:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(??:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])

[Daniel0]

I'm more interested as to why you want to validate test@test.

 

Because the syntax is user@hostname. Thus if the hostname is daniel-laptop and the user is daniel then the address would be daniel@daniel-laptop. If the hostname is gmail.com and the user is daniel.egeberg then the address is daniel.egeberg@gmail.com. Simple, right?

 

Example:

 

daniel@daniel-laptop:~$ mail
No mail for daniel
daniel@daniel-laptop:~$ mail daniel@daniel-laptop
Subject: Test Email
This is a test
Cc: 
daniel@daniel-laptop:~$ mail
Mail version 8.1.2 01/15/2001.  Type ? for help.
"/var/mail/daniel": 1 message 1 new
>N  1 daniel@daniel-lap  Sun Aug  3 20:13   14/476   Test Email
& 

[PHPTOM]

if(!filter_var($email, FILTER_VALIDATE_EMAIL)){
echo "not valid";
}

PHP 5 only

 

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[ratcateme]

i put that expression into the code above i think i got the escaping wright here's what i go

preg_match("(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*\")@(??:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(??:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])", $a)

it said

Unknown modifier '@' 

i tried PHPTOM's suggestion but that says test@test is not valid

 

Scott.

[Daniel0]

You need a delimiter.

[ratcateme]

You need a delimiter.

where should i put it i am still learning Regex

 

Scott.

[nrg_alpha]

While this solution is not so much hardcoded preg expression stuff, it does the trick. This is what I ran into recently:

 

$email = filter_var(filter_var($_POST['email'], FILTER_SANITIZE_EMAIL), FILTER_VALIDATE_EMAIL);
if($email === false){
   return false;
} else {
   return true;
}

 

One big area of concern with expressions is how 'strict' some can be. The general consensus is that allowing some flexibility is more preferable than locking out potential email validations due to extrememly tight-fisted expression routines. So PHP has these nice and neat little FILTER_SANITIZE_EMAIL and FILTER_VALIDATE_EMAIL functionalities that make for some relaxed enough checking to as to be reasonable enough, yet be strict enough at the same time...

 

Cheers,

 

NRG

[ratcateme]

thanks for the reply but that still says test@test is invalid. does anyone know how i could use this one

eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email)

with another one that will validate emails like test@test so my script look like

if(eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email) || preg_match(test@test))

 

Scott.

[Daniel0]

What's wrong with the one I gave you? I tested it and it does match the emails you want:

 

Try /^(?:\w+.?)+@(?:\w+.?)+$/

 

function test($email) {
echo $email . ': ';
if (preg_match('/^(?:\w+.?)+@(?:\w+.?)+$/', $email)) {
	echo 'valid';
}
else {
	echo 'invalid';
}
echo PHP_EOL;
}

test('test@test');
test('test.hello@test');
test('test@test.hello');
test('test.hello@hello.test');

 

Output:

test@test: valid
test.hello@test: valid
test@test.hello: valid
test.hello@hello.test: valid

 

By the way, the PCRE functions (e.g. preg_match()) are faster than the POSIX regex functions (e.g. ereg()).

 

Edit: Actually, it should be /^(?:\w+\.?)+@(?:\w+\.?)+$/ instead. Otherwise the period (.) will act as a metacharacter meaning "any character", but we want it to be a literal period.

[ratcateme]

the problem with the first way you posted it said emails like bob@users.sourceforge.net or bob.users@sourceforge.net but your new update works better and says all the emails i want are valid

 

Scott.