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<?php $ar = [ "service" => "to", 0 => "443" ]; $ar['newkey'] = $ar[0]; unset($ar[0]); var_dump($ar);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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(2) { ["service"]=> string(2) "to" ["newkey"]=> string(3) "443" }
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(2) { ["service"]=> string(2) "to" ["newkey"]=> string(3) "443" }

preferences:
161.9 ms | 402 KiB | 162 Q