Q:

Regular Expression of patterns. EMAIL_ADDRESS

Does anyone know what the exact regular expression of androids patterns. EMAIL_ADDRESS uses? 
I need to use the same pattern for PHP.  Thank you. 

A:

this is how PHP filter email
$Email = "dev@gmail.com";

if (filter_var($Email, FILTER_VALIDATE_EMAIL))
    echo "Email Is Valid";
else
    echo "Email Isn't Valid";

