--- oauth/provider.c    2010-08-02 23:08:57.000000000 +0100
+++ oauth-new/provider.c        2010-08-02 23:17:24.000000000 +0100
@@ -494,6 +494,27 @@
 				if(SUCCESS == zend_hash_find(HASH_OF(retval), "Authorization", sizeof("Authorization"), (void **) &tmpzval)) {
 					auth_header = *tmpzval;
 					authorization_header = estrdup(Z_STRVAL_P(auth_header));
+				} else if (SUCCESS == zend_hash_find(HASH_OF(retval), "authorization", sizeof("authorization"), (void **) &tmpzval)) {
+					// most likely case: try all lowercase
+					auth_header = *tmpzval;
+					authorization_header = estrdup(Z_STRVAL_P(auth_header));
+				} else {
+					// last-ditch attempt -- try for a completely case-insensitive match
+					int key_type;
+					char *string_key;
+					ulong num_key;
+					zend_hash_internal_pointer_reset(HASH_OF(retval));
+					while ((key_type = zend_hash_get_current_key(HASH_OF(retval), &string_key, &num_key, 1)) != HASH_KEY_NON_EXISTANT) {
+						if (key_type == HASH_KEY_IS_STRING && !strncasecmp(string_key, "authorization", sizeof("authorization"))) {
+							// found it!
+							if (SUCCESS==zend_hash_get_current_data(HASH_OF(retval), (void **) &tmpzval)) {
+								auth_header = *tmpzval;
+								authorization_header = estrdup(Z_STRVAL_P(auth_header));
+							}
+							break;
+						}
+						zend_hash_move_forward(HASH_OF(retval));
+					}
 				}
 			} else {
 				php_error_docref(NULL TSRMLS_CC, E_ERROR, "Failed to call apache_request_headers while running under the Apache SAPI");