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@ 2024-01-19T12:07:25Z

<?php

$atcode = '11F5796B61690196';

var_export(
    strtr(
        str_repeat(substr($atcode, -2), 2),
        '012345789ABCDEF',
        '2301675AB89EFCD'
    )
);

Output
Performance
VLD
References
Branches

Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7: 'B6B6'

preferences:dark modelive preview

57.55 ms | 402 KiB | 62 Q