Mail is not being sent due to @ symbol in the message

Question

I am stuck into a problem from hours which has occurred due to @ symbol in message while sending an email. Does anyone know how to resolve this, It may save mine a lot of time. following is my code

$message .= '<p> '.$gift_card->field_from_name["und"][0]["value"].' has sent you a gift card </p>';

where $gift_card->field_from_name["und"][0]["value"] returns email id ( which contains @ sign ) and when I remove this line from complete message it works properly

Answer 1

使用此代码-

$message .= "<p> '".$gift_card->field_from_name["und"][0]["value"]."' has sent you a gift card </p>";