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run code in 300+ PHP versions simultaneously
<?php $array = [ [0 => 1, 1 => 5, 3 => null], [0 => 4, 1 => null, 3 => null], [0 => null, 1 => 5, 3 => 5] ]; $result = []; array_walk_recursive( $array, function($v, $k) use(&$result) { $result[$k] = ($result[$k] ?? 0) + ($v !== null); } ); var_export($result);
Output for 8.0.1 - 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
array ( 0 => 2, 1 => 2, 3 => 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.
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130.98 ms | 407 KiB | 5 Q