Important Error: mb_substr() expects parameter 3 to be long, string given in /home/mydomain/public_html/libraries/phputf8/mbstring/core.php on line 88

Here's the unedited config report.

Thanks in advance

Database collation check: The collation of your table fields are correct

Legacy mode: Disabled | Joomla! SEF: Disabled | Joomla! SEF rewrite: Disabled | FTP layer: Disabled |

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 30 seconds | Max execution memory: 128M | Max file upload: 20M

Kunena menu details:

Joomla default template details : ablePixel06 | author: Q.Lotts | version: 1.1.0 | creationdate: Jan 2011

Kunena default template details : Blue Eagle (default) | author: Kunena Team | version: 1.7.2 | creationdate: 2012-01-31

Kunena version detailled: Installed version: 1.7.2 | Build: 5215 | Version name: Omega | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

board_offline	0
board_ofset	0
enablerss	1
enablepdf	1
threads_per_page	20
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
jmambot	0
disemoticons	0
template	default
showannouncement	1
avataroncat	0
catimagepath	category_images/
showchildcaticon	1
annmodid	62
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	1
showemail	0
showuserstats	1
showkarma	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	0
changename	0
pubwrite	0
floodprotection	0
mailmod	1
mailadmin	0
captcha	1
mailfull	1
allowavatar	1
allowavatarupload	1
allowavatargallery	1
avatarquality	65
avatarsize	2048
allowimageupload	0
allowimageregupload	1
imageheight	800
imagewidth	800
imagesize	150
allowfileupload	0
allowfileregupload	1
filetypes	zip,txt,doc,gz,tgz,jpg,gif,png,pdf
filesize	120
showranking	1
rankimages	1
avatar_src
fb_profile
pm_component
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	1
userlist_username	1
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_usertype	0
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory	0
showstats	0
showwhoisonline	1
showgenstats	0
showpopuserstats	1
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	0
rules_infb	1
rules_cid	304
help_infb	1
help_cid	305
showspoilertag	1
showvideotag	1
showebaytag	1
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	1
ebaylanguagecode	en-us
fbsessiontimeout	1800
highlightcode	0
rss_type	topic
rss_timelimit	month
rss_limit	100
rss_included_categories
rss_excluded_categories
rss_specification	rss2.0
rss_allow_html	1
rss_author_format	name
rss_author_in_title	1
rss_word_count	0
rss_old_titles	1
rss_cache	900
fbdefaultpage	categories
default_sort	asc
alphauserpointsnumchars	0
sef	1
sefcats	0
sefutf8	0
showimgforguest	1
showfileforguest	1
pollnboptions	4
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	mesid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
js_actstr_integration	0
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	50
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
integration_access	communitybuilder
integration_login	communitybuilder
integration_avatar	communitybuilder
integration_profile	communitybuilder
integration_private	none
integration_activity	communitybuilder
boxghostmessage	0
userdeletetmessage	0
latestcategory_in	1
topicicons	1
onlineusers	1
debug	0
catsautosubscribed	0
showbannedreason	0
version_check	1
showthankyou	1
showpopthankyoustats	1
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	1
lightbox	1
activity_limit	0
show_list_time	720
show_session_type	0
show_session_starttime	0
userlist_allowed	0
userlist_count_users	1
enable_threaded_layouts	0
category_subscriptions	post
topic_subscriptions	every
pubprofile	1
thankyou_max	10
email_recipient_count	0
email_recipient_privacy	bcc
email_visible_address
captcha_post_limit	0

Third-party components: CommunityBuilder 1.7.1

Third-party SEF components: sh404sef: The file doesn't exist sh404sef.xml !

Plugins: System - Mootools Upgrade: Disabled | System - Mootools12: Disabled

Modules: Kunena Latest 1.7.2 | Kunena Login 1.7.2

Looks like mb_substr() provided by Joomla isn't fully compatible with the real one. You get this error only if PHP hsan't been built with multibyte support turned on, or the extension has been disabled in PHP.

For performance reasons I advice to turn it on.

I relayed what you said to my host who has replied as follows:

"PHP has been built with mbstring turned on. I would recommend you checking back with your developer. To verify mbstring has been turned on please see the following link"

I checked the link provided (on the shared server) where it is clearly visible that mbstring support is enabled. See attached.

Please advise

Hi Matias - any chance you could help me on this please? Still same error appearing.

I think Matias wrote that you need to get "multibyte support" turned on in PHP.

I mentioned earlier that I checked with my host who confirms that mb string multibyte support is turned on.

Please advise

My advice, for what it's worth, is to try the same situation on a different hosted environment. I've seen one or two reports of issues with PHP 5.3.9 and the issues disappeared after going to PHP 5.3.10. But, in technical matters like these, I usually leave it to the experts.

Hi Sozzled. Thanks for your reply. I cloned the site and installed on a separate server where the error message disappeared. I relayed this to my host who investigated further and responded as follows:

"I understand this is frustrating, but I have confirmed yet again that this is a coding issue and will need to be resolved by your developer. The error indicates that the function is not being passed an offset as expected. You can verify mbstring is enabled here: panther.directrouter.co.uk/php/

As for comparing servers that's not a useful metric as the other server could be using an outdated PHP release which doesn't require the same number of parameters."

(The other server is indeed using an older PHP version 5.2.17).

I feel a bit stuck here in the middle. You guys say one thing and my host says another. Can you please advise what I might be able to do to resolve this ?

Thanks in advance

The final choice is yours. The choice to use or not use Kunena is your choice; the choice of webhosting provider is yours, too. It's the same choice with any kind of website that people may consider: what software do you need and will my webhosting provider be able to run it?

It is not our responsibility to tell you what to do any more than it's our responsibility to tell your webhosting provider what they must do, either.

These are the established facts in the matter. You have had this problem for over 2 months and there has been no resolution offered by your webhosting provider. You do not have this problem if you use a differently hosted platform. From what we can tell, no other person has reported this problem with the Kunena Latest module.

I think those facts speak for themselves. We have offered you the best advice that we can under these circumstances. In the end, the choice is yours. You have to choose the best solution that works so that you have the kind of website that you need for your purposes. I can't advise you any better than that, sorry. For your sake I will ask the Kunena developers to look again at this topic to see if there's something we've overlooked but, I caution you, this could take some time and it may only delay the inevitable, i.e. we may not be able to fix this problem for you where it involves your current webhost.