<?php $arr = [ "0" => [ "UserID" => "1", "EmailAddress" => "user5@gmail.com", "TransID" => "fjhf8f7848", ], "1" => [ "UserID" => "1", "EmailAddress" => "johndoe@gmail.com", "TransID" => "dfsdhsdu78", ], ]; $result = array_map(function(&$item){ ksort($item); return $item; }, $arr); print_r($result);
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