From 8ea5ae6c9ab886ed81c09ee98a85fd2fd7d2dc83 Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipe@php.net>
Date: Fri, 11 Jul 2008 12:25:38 +0000
Subject: [PATCH] - MFB: Fixed bug #45485 (strip_tags and <?XML tag)

---
 ext/standard/string.c                    |  3 ++-
 ext/standard/tests/strings/bug45485.phpt | 23 +++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 ext/standard/tests/strings/bug45485.phpt

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 691dd85cf8..e478979618 100644
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -4413,12 +4413,13 @@ PHPAPI size_t php_strip_tags_ex(char *rbuf, int len, int *stateptr, char *allow,
 				/* fall-through */
 
 			case 'l':
+			case 'L':
 
 				/* swm: If we encounter '<?xml' then we shouldn't be in
 				 * state == 2 (PHP). Switch back to HTML.
 				 */
 
-				if (state == 2 && p > buf+2 && *(p-1) == 'm' && *(p-2) == 'x') {
+				if (state == 2 && p > buf+2 && strncasecmp(p-2, "xm", 2) == 0) {
 					state = 1;
 					break;
 				}
diff --git a/ext/standard/tests/strings/bug45485.phpt b/ext/standard/tests/strings/bug45485.phpt
new file mode 100644
index 0000000000..4d24c9ad87
--- /dev/null
+++ b/ext/standard/tests/strings/bug45485.phpt
@@ -0,0 +1,23 @@
+--TEST--
+Bug #45485 (strip_tags and <?XML tag)
+--FILE--
+<?php
+
+$s =<<< EOD
+This text is shown <?XML:NAMESPACE PREFIX = ST1 /><b>This Text disappears</b>
+EOD;
+
+$s = strip_tags($s);
+echo htmlspecialchars($s),"\n";
+
+$s =<<< EOD
+This text is shown <?xml:NAMESPACE PREFIX = ST1 /><b>This Text disappears</b>
+EOD;
+
+$s = strip_tags($s);
+echo htmlspecialchars($s),"\n";
+
+?>
+--EXPECT--
+This text is shown This Text disappears
+This text is shown This Text disappears
-- 
2.40.0