3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mymap = ['z' => 'zombies', 'b' => 'babel fish', 'a' => 'angels', 'd' => 'dice']; ksort($mymap); foreach($mymap as $k => $v) { echo 'k:', $k, ' ', 'v:', $v, PHP_EOL; }
Output for 7.1.0 - 7.1.21, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0
k:a v:angels k:b v:babel fish k:d v:dice k:z v:zombies
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.
preferences:
201.48 ms | 407 KiB | 5 Q