Php function to validate email address

PHP function to validate Email Address 

Simple php function to validate email address. Helps in validating email address in php.

function isValidEmail($email) {
    if(preg_match("/[a-zA-Z0-9_-.+]+@[a-zA-Z0-9-]+.[a-zA-Z]+/", $email) > 0)
        return true;
    else
        return false;
}