What are the access control modifiers in PHP?

Question

I have the following code to add the appropriate header then redirect but I am still getting an error that this header is missing. What am I doing wrong?

 header("HTTP/1.1 301 Moved Permanently");
 header("Access-Control-Allow-Origin: http://".$_SERVER['HTTP_HOST']);
 $augmentedUrl = $playbackbase."?authTicket=$authTicket";
 header("Location: $augmentedUrl");

Answer 1

Access control modifiers restrict the functions and classes to be accessed. Following are the list of access control modifiers:

Public: This property or method can be accessed from anywhere on the script.

Private: This property or method cannot be accessed from everywhere. It can only be used by the class or the object it is a part of.

Protected: This property or method can be used by the code in the class it is a part of.

Abstract: This property or method needs to be subclassed and cannot be used directly.

Example:

Class employee
{
Public $name;
Private $salary;
}
$emp = new employee;
$emp->name = “emp”;
echo $emp->name;