PHP: Check does email contains "#" and "." - php

Question

Im new in php and this should be a easy to make, but I dont now how.
I want to check does $address has characters "#" and "."
<?php
function testEmail($address){
$a = strpos("/#/", $address);
$b = strpos("/./", $address);
if (($a != false) && ($b != false)) {
echo "Email is OK";
} else {
echo "Email is NOT OK";
}
}
testEmail("testmail#gmail.com");
?>

Answer 1

You can simply use filter_var to check validity of email.
$email = 'gaurang#gmail.com'
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
// Email correct
}
else {
//Email not correct
}

Answer 2

Is your question about this specific piece of code? Then #wroniasty's answer is correct.
But you really don't want to use a regex to test email validity, unless you want to use monstrosities like these.
However, if your question really is "How can I validate an email address?", then take a look at filter_var().
You can pass it the filter FILTER_VALIDATE_EMAIL, so it will validate the email address catching quite a bit of edge cases.
You can check an address using the following code:
if (filter_var($email_address, FILTER_VALIDATE_EMAIL)) {
// valid email
} else {
// invalid email
}

Answer 3

<?php
function testEmail($address) {
if (preg_match ( "/\.|#/", $address))
echo "Email OK";
else
echo "Email not OK";
}
?>
a better way to check for valid email address:
<?
function isValidEmail($email){
return preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*#[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/", $email);
}
?>