My host has rolled back to 4.4.4 - I really don't want them to move forwards again, but I think they will this weekend. There is a link to a bug list on the php website -
bugs.php.net/bug.php?id=40624
but I really dont understand. Something to do with pcre lib being an issue - I really don't understand.
There does appear to be a fix on there, and I have directed my host towards it. They have been excellent in the past, but I am just worried that there is a module/bot/com that is causing the issue.
I think I am just going to have to run with it - panic a bit and then do some detection using echo statements in the index.php but I think it gives up at the beginning!
ARRGGH!
The quality of chemistry is not strained, it droppeth and gentle rain from heaven upon the place beneath...
Just look at the server error log when/if your site breaks. Usually you should get the Fatal Error that caused PHP to quit. It'll give you the file and line of the offending statement. Then you can google it and see how to fix it. Chances are that it's some 3rd party module... cos Joomla core stuff always works fine.