diff --git a/INSTALL b/INSTALL
index 090b157d..317c89bb 100644
--- a/INSTALL
+++ b/INSTALL
@@ -14,10 +14,11 @@ basic sanity checks to get the most out of this library.
 ---------------------------------------------------------------------------
 1.  Compatibility
 
-HTML Purifier works in both PHP 4 and PHP 5, from PHP 4.3.2 and up. It has
-no core dependencies with other libraries.  PHP 4 support will be
-deprecated on December 31, 2007, at which time only essential security
-fixes will be issued for the PHP 4 version until August 8, 2008.
+HTML Purifier works in both PHP 4 and PHP 5, and is actively tested from 
+PHP 4.3.7 and up (see tests/multitest.php for specific versions). It has 
+no core dependencies with other libraries. PHP 4 support will be 
+deprecated on December 31, 2007, at which time only essential security 
+fixes will be issued for the PHP 4 version until August 8, 2008. 
 
 These optional extensions can enhance the capabilities of HTML Purifier:
 
diff --git a/NEWS b/NEWS
index 3dcdbfe3..3d37c1ff 100644
--- a/NEWS
+++ b/NEWS
@@ -39,6 +39,7 @@ NEWS ( CHANGELOG and HISTORY )                                     HTMLPurifier
   HTMLDefinition errors, this may indicate problems with error-collecting
   facilities in PHP 5
 - Make ErrorCollectorEMock work in both PHP 4 and PHP 5
+- Make PH5P work with PHP 5.0 by removing unnecessary array parameter typedef
 . %Core.AcceptFullDocuments renamed to %Core.ConvertDocumentToFragment 
   to better communicate its purpose
 . Error unit tests can now specify the expectation of no errors. Future
@@ -54,6 +55,8 @@ NEWS ( CHANGELOG and HISTORY )                                     HTMLPurifier
 . Maintenance script for generating PH5P patch added, original PH5P source
   file also added under version control
 . Full unit test runner script title made more descriptive with PHP version
+. Updated INSTALL file to state that 4.3.7 is the earliest version we
+  are actively testing
 
 2.1.2, released 2007-09-03
 ! Implemented Object module for trusted users
diff --git a/library/HTMLPurifier/Lexer/PH5P.php b/library/HTMLPurifier/Lexer/PH5P.php
index ff314611..b6762379 100644
--- a/library/HTMLPurifier/Lexer/PH5P.php
+++ b/library/HTMLPurifier/Lexer/PH5P.php
@@ -3720,7 +3720,7 @@ class HTML5TreeConstructer {
         }
     }
 
-    private function generateImpliedEndTags(array $exclude = array()) {
+    private function generateImpliedEndTags($exclude = array()) {
         /* When the steps below require the UA to generate implied end tags,
         then, if the current node is a dd element, a dt element, an li element,
         a p element, a td element, a th  element, or a tr element, the UA must
diff --git a/maintenance/PH5P.patch b/maintenance/PH5P.patch
index ce414b81..9365cffe 100644
--- a/maintenance/PH5P.patch
+++ b/maintenance/PH5P.patch
@@ -1,5 +1,5 @@
 --- C:\Users\Edward\Webs\htmlpurifier\maintenance\PH5P.php	2007-11-04 23:41:49.074543700 -0500
-+++ C:\Users\Edward\Webs\htmlpurifier\maintenance/PH5P.new.php	2007-11-04 23:54:19.206543700 -0500
++++ C:\Users\Edward\Webs\htmlpurifier\maintenance/PH5P.new.php	2007-11-05 00:23:52.839543700 -0500
 @@ -211,7 +211,10 @@
          // If nothing is returned, emit a U+0026 AMPERSAND character token.
          // Otherwise, emit the character token that was returned.
@@ -43,6 +43,15 @@
                          $entity = $id;
                          break;
                      }
+@@ -3659,7 +3668,7 @@
+         }
+     }
+ 
+-    private function generateImpliedEndTags(array $exclude = array()) {
++    private function generateImpliedEndTags($exclude = array()) {
+         /* When the steps below require the UA to generate implied end tags,
+         then, if the current node is a dd element, a dt element, an li element,
+         a p element, a td element, a th  element, or a tr element, the UA must
 @@ -3673,7 +3682,8 @@
          }
      }
diff --git a/tests/multitest.php b/tests/multitest.php
index 6f0a050b..f555b368 100644
--- a/tests/multitest.php
+++ b/tests/multitest.php
@@ -1,11 +1,22 @@
 <?php
 
 $versions_to_test = array(
+    'FLUSH',
+    '4.3.7',
+    '4.3.8',
+    '4.3.9',
+    'FLUSH', // serialize's behavior changed to be non-backwards-compat
     '4.3.10',
     '4.3.11',
     '4.4.6',
     '4.4.7',
+    '5.0.4',
+    '5.0.5',
+    '5.1.4',
     '5.1.6',
+    '5.2.0',
+    '5.2.1',
+    '5.2.2',
     '5.2.3',
     '5.2.4',
     '5.2.5RC2-dev',
@@ -18,6 +29,10 @@ echo "HTML Purifier\n";
 echo "Multiple PHP Versions Test\n\n";
 
 foreach ($versions_to_test as $version) {
+    if ($version === 'FLUSH') {
+        shell_exec('php ../maintenance/flush-definition-cache.php');
+        continue;
+    }
     passthru("phpv $version index.php");
     echo "\n\n";
 }