3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = ["04" => 1, "09" => 1, "10" => 1, "01" => 1]; for ($x = 1; $x < 11; ++$x) { $key = sprintf("%02d", $x); // ensure proper padding with 0 $result[$key] = $data[$key] ?? 0; // null coalescing operator from php5.6+ } print_r($result);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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, 8.4.16, 8.5.0 - 8.5.1
Array ( [01] => 1 [02] => 0 [03] => 0 [04] => 1 [05] => 0 [06] => 0 [07] => 0 [08] => 0 [09] => 1 [10] => 1 )
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.
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/kYHY6 on line 6
Process exited with code 255.

preferences:
246.01 ms | 408 KiB | 5 Q