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<?php $rotor = ["A" => "R", "B" => "D", "C" => "O", "D" => "B"]; $from = "C"; foreach (array_keys($rotor) as $index => $key) { if ($key === $from) { $rotor = array_slice($rotor, $index, null, true) + $rotor; break; } } var_export($rotor);
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 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
array ( 'C' => 'O', 'D' => 'B', 'A' => 'R', 'B' => 'D', )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 'C' => 'O', 'D' => 'B', 'A' => 'R', 'B' => 'D', )
preferences:
147.34 ms | 407 KiB | 5 Q