There was a problem with GeoTIFF in the last GDAL framework, the embedded CSV option for the GeoTIFF library caused crashes. Fixed.
I am now building the whole thing, including dependency libraries, in an Xcode project (which I've also made available). In a further cleaning up of the internal organization and to facilitate building optional formats in Xcode, many formats are now plugins.
For UnixImageIO, when I made that Xcode project, I forgot to release the built framework from that, which the recent PHP builds were based on. This created a version mismatch with the old UnixImageIO that broke PHP. Nothing changed in PHP, you just need the new UnixImageIO framework.
Oh, yeah, there's also a PROJ Xcode project.