How can I have a 64-bit integer in PHP?
It seems like it is not by a config file, but rather it might be a compile-time option, and it depends on the platform.
Native 64-bit integers require 64-bit hardware AND the 64-bit version of PHP.
On 32-bit hardware:
$ php -r 'echo PHP_INT_MAX;' 2147483647
On 64-bit hardware:
$ php -r 'echo PHP_INT_MAX;' 9223372036854775807
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