anewsolutions

<?php
// test various ways of determining if a page is invoked under SSL

//  getenv('HTTPS'): if not false, look for '1' or 'on'
echo "(hoping to see '1' or 'on') getenv('HTTPS') returns ";
if (getenv('HTTPS')) {
  echo "'" . getenv('HTTPS') . "'<br>\n";
} else {
  echo "nothing<br>\n";
}
//  getenv('HTTP_HTTPS'): if not false, look for '1' or 'on'
echo "(hoping to see '1' or 'on') getenv('HTTP_HTTPS') returns ";
if (getenv('HTTP_HTTPS')) {
  echo "'" . getenv('HTTP_HTTPS') . "'<br>\n";
} else {
  echo "nothing<br>\n";
}
//  $_SERVER['HTTPS']: if defined and non-empty and not 'off' (IIS uses 'off' instead of empty)
echo "(hoping to see something other than 'off') \$_SERVER['HTTPS'] returns ";
if (isset($_SERVER['HTTPS'])) {
  echo "'" . $_SERVER['HTTPS'] . "'<br>\n";
} else {
  echo "nothing<br>\n";
}
//  $_SERVER['HTTP_HTTPS']: if defined and non-empty and not 'off' (IIS uses 'off' instead of empty)
echo "(hoping to see something other than 'off') \$_SERVER['HTTP_HTTPS'] returns ";
if (isset($_SERVER['HTTP_HTTPS'])) {
  echo "'" . $_SERVER['HTTP_HTTPS'] . "'<br>\n";
} else {
  echo "nothing<br>\n";
}
//  $_SERVER['SERVER_PORT']: by default, == '443' for SSL, == '80' for non-SSL, but this can change with server setup
echo "(hoping to see '443') \$_SERVER['SERVER_PORT'] returns ";
if (isset($_SERVER['SERVER_PORT'])) {
  echo "'" . $_SERVER['SERVER_PORT'] . "'<br>\n";
} else {
  echo "nothing<br>\n";
}

?>