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<?php $ar = []; $ar['one'][] = 1; $ar['one'][] = 2; $ar['two'][] = 1; $ar['two'][] = 2; $ar['three'][] = 1; $ar['three'][] = 2; print_r($ar); $keys = array_keys($ar); $vals = array_column($ar,0); $res = array_combine($keys,$vals); print_r($res);
Output for 7.1.25 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Array ( [one] => Array ( [0] => 1 [1] => 2 ) [two] => Array ( [0] => 1 [1] => 2 ) [three] => Array ( [0] => 1 [1] => 2 ) ) Array ( [one] => 1 [two] => 1 [three] => 1 )
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 ( [one] => Array ( [0] => 1 [1] => 2 ) [two] => Array ( [0] => 1 [1] => 2 ) [three] => Array ( [0] => 1 [1] => 2 ) ) Array ( [one] => 1 [two] => 1 [three] => 1 )

preferences:
144.27 ms | 402 KiB | 182 Q