3v4l.org

run code in 300+ PHP versions simultaneously
<?php // https://stackoverflow.com/questions/25573743/can-crc32c-ever-return-to-0#25576636 var_dump(hash('crc32c', hex2bin('ab9be09b'))); var_dump((bool) hash('crc32c', hex2bin('ab9be09b')));
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.15, 8.5.0
string(8) "00000000" bool(true)
Output for 8.3.28
/bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.

preferences:
86.03 ms | 407 KiB | 5 Q