Review System not working

Question

I am unable to submit any reviews on any product.I also checked the admin area to see if I get any notification for reviews requiring approval..

For some reason, after I click 'submit', the review never gets into the system..

The OC version is 1.5.1 and the link is:
http://saleem.webuda.com/index.php?rout ... duct_id=40

Also if I type any wrong captcha, there is no error message

Answers

The problem is that it's trying to use the utf8_strlen function. Either you've upgraded incorrectly, or a mod has overwritten the product controller and caused the issue. Error Message:

Code: Select all
Fatal error: Call to undefined function utf8_strlen() in /home/a2554652/public_html/catalog/controller/product/product.php on line 489

Source: http://forum.opencart.com/viewtopic.php?t=64872

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