How PHP Gets the header information sent to the user, phpheader_php tutorial

PHP gets the header information sent to the user, Phpheader

The example in this article describes how PHP gets the header information sent to the user. Share to everyone for your reference. The specific analysis is as follows:

The Headers_list function has no arguments and returns an array. The returned array contains a numeric index table containing header information to be sent to the client

<?php  Header ("Expires:sat, Dec 1989 05:30:00 GMT");  echo "This is some output.
";  echo "Headers Sent is:
 
 
  
  

   
   
  ";  $headers = Headers_list ();  foreach ($headers as $header) {    echo '
  
   
   
$header
";  }  echo "
 
  
  
";? >

I hope this article is helpful to everyone's PHP programming.

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