Online PHP editor | output for KAvQ2

@ 2020-12-01T04:20:58Z

<?php

$now = strtotime('now');
$start = strtotime('1 January 2021');
$end = strtotime('31 January 2021');

if ($now >= $start && $now <= $end):
    echo 'true';
else:
    echo 'false';
endif;

echo "\n";

$now = strtotime('now');
$start = strtotime('1 November 2020');
$end = strtotime('31 January 2021');

if ($now >= $start && $now <= $end):
    echo 'true';
else:
    echo 'false';
endif;

Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: false true
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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