64 bit - How can I have a 64-bit integer in PHP?

Question

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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.

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1 Answer

深蓝 · Answer 1 · 2021-10-16T21:23:27+0000

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