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<?php $arr = [ [ "Some key here" => 26542973, "generated key" => "John", "who knows what key" => 10 ], [ "Some key here" => "", "generated key" => "", "who knows what key" => "" ], ]; $arr = array_filter($arr, function($val){ return implode("", $val); }); print_r($arr);
Output for 5.6.38, 7.1.0 - 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 ( [0] => Array ( [Some key here] => 26542973 [generated key] => John [who knows what key] => 10 ) )
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] => Array ( [Some key here] => 26542973 [generated key] => John [who knows what key] => 10 ) )

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