ipc - Which is the INT limit when I create a shared memory (shmop_open) in the KEY? (PHP) -

ipc - Which is the INT limit when I create a shared memory (shmop_open) in the KEY? (PHP) -

when created shared memory segment, used integer shared memory key. now, need know limit in int number key.

i know limit in int32 2147483647 , limit in int64 9223372036854775807

if create shared memory number 9223372036854775807 , 9223372036854775800, key reference 0xffffffff , 0xfffffff8.

i think ipcs -m response, doesn't show hex digits. limit, , how confirm ipcs -m works should?

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