ojsde/ojs — comment on commit 6bc85c3408e804495c1737e362132fcf1b7db4ad
File: plugins/importexport/datacite/DataciteExportPlugin.inc.php line 19
By jerico-dev:

This argument is true for constants in core, too. Any constant introduced in core could clash with any constant in any unknown 3rd-party plug-in. I don't see how you want to avoid that in PHP4 unless you introduce (and document) a consistent naming convention for constants in plug-ins (which doesn't exist AFAIK). There are many, many constants in those new plug-ins and renaming them all would be a considerable amount of work.