Developer credits
Git commits in Moodle 1.9.15 by Tim Hunt
commit 9d656f584ad11ef8c3543a83ab7e79ee8fff4661 Author: Tim Hunt <T.J.Hunt@open.ac.uk> Date: Wed, 02 Nov 2011 01:35:35 +0800 Tag: v1.9.15 MDL-30038 mod_lesson was not working on PHP4.
commit 9d656f584ad11ef8c3543a83ab7e79ee8fff4661 Author: Tim Hunt <T.J.Hunt@open.ac.uk> Date: Wed, 02 Nov 2011 01:35:35 +0800 Tag: v1.9.15 MDL-30038 mod_lesson was not working on PHP4.