链接（在php中）到Android应用程序中的MainActivity

Question

I got an error on line 16 which is:

   echo "You have been successfully registered. <a href="'.$link_address.'">Link</a>";

My code register.php is:

require "conn.php";

$name = $_POST["name"];
$surname = $_POST["surname"];
$age = $_POST["age"];
$username = $_POST["username"];
$password = $_POST["password"];
$link_address = "http://...";

$mysql_qry = "insert into employee_data (name, surname, age, username, password) values ('$name','$surname','$age','$username','$password');";


if($conn->query($mysql_qry)=== TRUE) {
echo "You have been successfully registered. <a href="'.$link_address.'">Link</a>";
}
else {
echo "Error: " . $mysql_qry . "<br>" . $conn->error;
}
$conn->close();
?>

Meanwhile:

What link should I use if I am trying to make a link to the MainActivity in android app (android studio)?

Answer 1

Maybe wrong quote ? Try :

echo 'You have been successfully registered. <a href="'.$link_address.'">Link</a>';

You are doing : "a" '.$var.' "a"
PHP will be lost ! Hope it helps a bit.

EDIT :

$link_address = "http://google.fr";
echo $link_address;
echo 'You have been successfully registered. <a href="'.$link_address.'">Link</a>';

This is my result :

Link goes on google.fr