Paypal Stopped working, Fatal error message.

[VMVirgin]

Paypal used to work on my site, but now when you go to checkout it gives message "Fatal error: Call to undefined function: stripos()in /homepages/11/d116923462/htdocs/libraries/joomla/environment/uri.php on line 675

I have not changed any settings on the site or Paypal.  ???Anybody with any ideas?
This may be to do with the joomla webite user login?

[Metric]

This is a Joomla related issue and not virtuemart. Joomla 1.5 uses PHP 5 code for some things. So, if your server is not php 5 enabled then go here http://docs.joomla.org/Why_can%27t_users_login_in_version_1.5.7_with_php_4%3F

Just follow what that links says and it should fix the issue.

[VMVirgin]

Many thanks Metric!!  SORTED!!!!