Item12896: Make PHP flags conditional

Otherwise apache has issues if php is not installed.

git-svn-id: http://svn.foswiki.org/trunk@17725 0b4bb1d4-4e5a-0410-9cc4-b2b747904278

core/foswiki_httpd_conf.txt

@@ -184,15 +184,19 @@ BrowserMatch "^gsa-crawler" NO_FOSWIKI_SESSION
     Allow from all
     Deny from env=blockAccess
 
-    # If you have PHP4 or PHP5 installed as Apache module make sure the directive below is enabled
-    # If you do not have PHP installed you will need to comment out the directory below
-    # to avoid errors.
-    # If PHP is installed as CGI this flag is not needed and will in fact make Apache fail
-    php_admin_flag engine off
-
-    # If you have PHP3 installed as Apache module make sure the directive below is enabled
-    # If PHP is installed as CGI this flag is not needed and will in fact make Apache fail
-    #php3_engine off
+    # If you have PHP installed as Apache module, one of the below directives will ensure
+    # that it is disabled.   The "ifmodule" statements should prevent this from causing
+    # errors if php is not installed.
+
+    <ifmodule mod_php3.c>
+        php3_engine off
+    </ifmodule>
+    <ifmodule mod_php4.c>
+        php_admin_flag engine off
+    </ifmodule>
+    <ifmodule mod_php5.c>
+        php_admin_flag engine off
+    </ifmodule>
 
     # This line will redefine the mime type for the most common types of scripts
     AddType text/plain .shtml .php .php3 .phtml .phtm .pl .py .cgi

core/pub-htaccess.txt

@@ -26,15 +26,19 @@ Options None
 # script execution but it may not be 100% safe only to rely on this. The safest
 # protection is to disabled all scripting.
 
-# If you have PHP4 or PHP5 installed as Apache module make sure the directive below is enabled
-# If you do not have PHP installed you will need to comment out the directory below
-# to avoid errors.
-# If PHP is installed as CGI this flag is not needed and will in fact make Apache fail 
-php_flag engine off
-
-# If you have PHP3 installed as Apache module make sure the directive below is enabled
-# If PHP is installed as CGI this flag is not needed and will in fact make Apache fail
-#php3_engine off
+# If you have PHP installed as Apache module, one of the below directives will ensure
+# that it is disabled.   The "ifmodule" statements should prevent this from causing
+# errors if php is not installed.
+
+<ifmodule mod_php3.c>
+    php3_engine off
+</ifmodule>
+<ifmodule mod_php4.c>
+    php_admin_flag engine off
+</ifmodule>
+<ifmodule mod_php5.c>
+    php_admin_flag engine off
+</ifmodule>
 
 # This line will redefine the mime type for the most common types of scripts
 AddType text/plain .shtml .php .php3 .phtml .phtm .pl .py .cgi