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

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As for comparing servers that's not a useful metric as the other server could be using an outdated PHP release which doesn't require the same number of parameters."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