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<?php $a = [ ["userid" => 1], ["userid" => 2], ["userid" => 3], ]; $a = array_map("array_flip", $a); print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [1] => userid ) [1] => Array ( [2] => userid ) [2] => Array ( [3] => userid ) )

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