PHP header and redirect comparison in ASP

Implementing redirects in ASP is using the Response.Redirect function:
Use one example:
Response.Redirect ". /test.asp "
There are similar functions in PHP: Header
Use one example:
Header ("Location:.") /test.php ");
But there is a difference between the two.
The redirect function of an ASP can work after sending a header file to a customer.
Such as
<%response.redirect ". /test.asp "%>
</body>Check that the next code in PHP will report an error:
?
Header ("Location:.") /test.php ");
?>
</body>You can only do this:
?
Header ("Location:.") /test.php ");
?>
That is, the header function cannot send any data to the customer.

Look at one of the following examples:
in ASP
<%
Response.Redirect ". /a.asp "
Response.Redirect ". /b.asp "
%>
</body>The result is a redirected a.asp file.
What about PHP?
?
Header ("Location:.") /a.php ");
Header ("Location:.") /b.php ");
?>
We found it redirected to b.php.
The following code is not executed after the redirect is executed in ASP.
and PHP continues to execute the following code after executing the header.
In this respect the header redirection in PHP is not as redirected as in ASP. Sometimes after we redirect, we can't execute the following code:
In general, we use
if (...)
Header ("...");
Else
{
...
}
But we can simply use the following methods:
if (...)
{Header ("...");