3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(number_format(unpack('E', hex2bin('2800322f96213747'))[1], 6, '.', ''));
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(8) "0.000000"

preferences:
81.18 ms | 402 KiB | 59 Q