Rich,
My guess is that the command line php and the one running from apache are not the same. At least I have seen that happen a lot on Linux. And this is a common system when that happens. One version normally the apache bundled one has all the libraries enabled, and the second one doesn't. So depending on how the script was ran it works, or it breaks.
Glad you got it working!
Enrolment
Help with auth_ldap_sync_users.php, confused!
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