删除函数PHP中的重复数组值

Question

I read all topics related to this question in stackoverflow and whole internet and cant find working sollution... Each owner has his item and when someone buy his item, owner gets an confirmation email, but when in cart is few same owner items, he gets several same email letters, so I need to remove dublicated array entries. I have tried to use DISTINCT and array_uniques functions but no luck. Any advices?

I have an array and function to send mail..

function email($mail_array) {
  foreach(array_unique($mail_array) as $field => $value) {
    $result = mysql_query("select email from users where $field='$value'");
    $row = mysql_fetch_array($result);


       $maail = mysql_real_escape_string($row['email']);
}
        $email_to = "".$maail."";



    // rest of mail formatting code

    // create email headers
    $headers = 'From: '.$email_from."
" .
               'Reply-To: '.$email_from."
" .
               'X-Mailer: PHP/' . phpversion();
    @mail($email_to, $email_subject, $email_message, $headers);
}


for ($i = 0; $i < $max; $i++) {
  $pid = $_SESSION['cart'][$i]['productid'];
  $owner = get_owner($pid);
  $mail_array = array(
    'name' => $owner
  );
  email($mail_array)  //call function to send mail          
}

Answer 1

You are passing $mail_array with a single value to mail function,so multiple mails are being sent. Instead, make $owner as array() and push all owners name in it.But before that check whether the array has the same owner already using in_array(). If owner is not there in the array then push it in the array otherwise do next iteration. And pass this array to mailing function.

    $mail_array = array();
    for ($i = 0; $i < $max; $i++) {
    $pid = $_SESSION['cart'][$i]['productid'];
    $owner = get_owner($pid);
    $mail_array = array_push($mail_array,$owner);    
    }
    email($mail_array)  //call function to send mail