I use basic authentication to grant users access to a page.  I have included the code below.  This code no longer works after upgrading to 4.3.2.  It has worked in ALL previous release I have used up to, and including, 4.3RC1.

In short, I read a flat file of user info.  The format is "username:password" (no quotes). One per line.  The code breaks out the pairs into an array and tests against $PHP_AUTH_USER and _PW until a match is made.  Otherwise it displays a warning.

I have narrowed it down to the string comparison, and have tried strcmp and strncmp (with modified logic) in place of "==" without success.  Also, I have output all of the variable values with various echo statements.  It appears all values are being set correctly.

Did something change with basic auth?  FYI, I have used the same PHP.INI file throughout, without modification.

<?
$auth = false; // Assume user is not authenticated

if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
	$PHP_AUTH_USER = $_SERVER['PHP_AUTH_USER'];
	$PHP_AUTH_PW = $_SERVER['PHP_AUTH_PW'];

	// Read the entire file into the variable $file_contents
	$filename = 'c:\\pass.txt';
	$fp = fopen( $filename, 'r' );
	$file_contents = fread($fp, filesize($filename));
	fclose( $fp );

	// Place the individual lines from the file contents into an array.
	$lines = explode("\n", $file_contents);

	// Split each of the lines into a username and a password pair
	// and attempt to match them to $PHP_AUTH_USER and $PHP_AUTH_PW.

	foreach ($lines as $line) {
		list($username, $password) = explode(':', $line);

		if (($username == "$PHP_AUTH_USER") && ($password == "$PHP_AUTH_PW")) {
			// A match is found, meaning the user is authenticated. So, stop the search.
			$auth = true;
			break;
		}
	}
} 

if (!$auth) {
	$authhead = 'WWW-Authenticate: Basic realm="Login"';
	header( "$authhead" );
	header( 'HTTP/1.0 401 Unauthorized' );
	echo "<CENTER>\n<BR><BR>\n<B><DIV STYLE=\"font-family: helvetica, arial, verdana; font-size: 14pt;\">The username or password you entered was invalid.</B>\n<BR><BR>\n";
	echo "<INPUT TYPE=button VALUE=\"Try Again\" onClick=\"window.location='';\"></DIV>";
	exit;
}
?>