Online PHP editor | output for 5ZJIv

@ 2024-01-19T12:47:35Z

<?php

$atcode = '11F5796B61690196';
$sub1 = [
    '0' => '2',
    '1' => '3',
    '2' => '0',
    '3' => '1',
    '4' => '6',
    '5' => '7',
    '7' => '5',
    '8' => 'A',
    '9' => 'B',
    'A' => '8',
    'B' => '9',
    'C' => 'E',
    'D' => 'F',
    'E' => 'C',
    'F' => 'D'
];
var_export(
    str_repeat(
        strtr($atcode[14], $sub1) . $atcode[15],
        2
    )
);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0: 'B6B6'
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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