1: post_max_size >= 2GB makes PHP overflow, resulting in a negative post_max_size:
“POST Content-Length of 0 bytes exceeds the limit of -2147483648 bytes”
2: defining post_max_size (etc) with MB instead of M causes PHP to only read the last character, in other words 10MB becomes 10 bytes . How hard can it be to either use the first character or even better, both?
(note 1: this can be avoided by actually reading the manual, but this should have been handled better from PHP`s side IMO)
(Note 2: This experience come from the latest stable PHP version in SLES 10SP2, hopefully this has been fixed in later releases.)