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<?php var_dump(number_format(9223372036854775810, -1));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
string(25) "9,223,372,036,854,775,808"
preferences:
62.08 ms | 406 KiB | 5 Q