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<?php $input = [ 'a' => [ 'b' => 'c', 'd' => 'e', 'f' => [ 'g' => 'h' ], ], 'i' => 'j', 'k' => [ 'l' => 'm' ], ]; function list_paths($input) { $paths = array(); foreach ($input as $k => $v) { if (is_array($v)) { foreach (list_paths($v) as $path) { $paths[] = $k . " > " . $path; } } else { $paths[] = $k . " > " . $v; } } return $paths; } print_r(list_paths($input));
Output for 5.6.38, 7.0.33, 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
Array ( [0] => a > b > c [1] => a > d > e [2] => a > f > g > h [3] => i > j [4] => k > l > m )
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 ( [0] => a > b > c [1] => a > d > e [2] => a > f > g > h [3] => i > j [4] => k > l > m )

preferences:
184.95 ms | 402 KiB | 157 Q