Category Archives: Run Time Environment

I don’t refer to the PHP manual very much for commonly used functions, so I almost missed this one. The ‘mysql_escape_string’ function that’s used in subs.php to prepare data for insertion into the database is deprecated as of PHP 5.3 … Continue reading →

In the past, I’ve had some intermittent problems with a SCO loading but showing a Javascript error. Although I couldn’t pin it down conclusively, it seemed to result from an incomplete download of some kind. Since forcing a reload with … Continue reading →

The problem SCO described in Step 52 is now working correctly, so why do I need to look any further? There’s a more subtle problem. The ‘datamodel.element._children’ mechanism described in the SCORM RTE specification seems to have been developed so … Continue reading →

I’m still trying to fix the problem that my reader’s SCO highlighted (described in this post). I’ve implemented the optional data element that it’s trying to use – cmi.comments – but that hasn’t fixed the problem. So I need to … Continue reading →

A reader recently contacted me with a problem that raised some interesting issues. Hopefully, we’ve now resolved the problem but, since the issues might well occur with other SCOs, what I’d like to do is to walk through the process … Continue reading →

After a somewhat longer time than I’d planned, here’s Rev 2.1 of the VSSCORM 1.2 RTE. It includes the following changes from Rev 2.0:

An eagle-eyed reader of the blog has brought the following bug to my attention. In all cases in the php code, you use the string “ab initio” as the value for cmi.core.entry when it is the first time a SCO … Continue reading →

In Step 48, I introduced a flag to indicate whether a session had been finished or not. In that post, it was used to ensure that LMSFinish wasn’t called multiple times. But I really ought to extend it to make … Continue reading →

I recently spotted a bug in VS SCORM 1.2 RTE Rev 2.0. Line 54 of finish.php reads: $rawscore = readElement(‘cmi.score.raw’); It should read: $rawscore = readElement(‘cmi.core.score.raw’); I’ll incorporate this fix in a new release of the RTE once I’ve made … Continue reading →