Seems good in theory, though not quite usable in practice.
As with subclassing, the aliases would not work reliably
for code that uses type hints and/or instanceof.
See <https://bugs.php.net/bug.php?id=61422>, which I was
previously unaware of.
The best alternative is to add class_alias() calls to the
class files themselves, as well as duplicate entries to the
AutoLoader (just like when multiple classes are in the same
file).
There is no good way to show deprecation warnings, which
likely would have to be implemented in PHP itself. For now,
renamed classes should be indicated in RELEASE-NOTES. Maybe
I will file an RfC (at <https://wiki.php.net/rfc>) for this
and related improvements (e.g. making class names case
sensitive).
This reverts commit c61fdb4ef5.
Change-Id: I9771b4239543b543cfa078f357db1cd3918f081e
Sometimes it is desirable to change a class name that is still referenced
in extensions or config files (e.g. for consistency, as in I507ba00a).
PHP's class_alias() function can help in preserving backward compatibility;
however, creating an alias first requires that the class be loaded.
Hence this is implemented in AutoLoader. Lazy loading continues to work,
the list of class names is still maintained in a central location, and
optionally, deprecation warnings can be generated.
Change-Id: I1d3fb04a448647b5be10bed7fec05238b9fc6fc7
When MediaWiki autoloading fails, we should gracefully return false.
Instead, we have been calling strtolower roughly 1,000 times in the hope
of finding a case-insensitive match.
This patch preserves the legacy case-insensitivity, but improves its
performance by approximately 100x, by storing the case-insensitive class
lookups as a static variable.
There is a new global $wgAutoloadAttemptLowercase which will switch the
behavior if desired. The default is to support case-insensitive loading.
Change-Id: Ifb12e05614a48390b730167e9d4ddcd8545db764
