PHP vs. two different elements in a data

<?phpfunction diffarray ($arr 1 ,  $arr 2 ) {$arrRet  = array ();foreach  ($arr 1  as  $key  =>  $value) {if ($arr 1[$key] !=  $arr 2[$key]) {if (Array_key_exists ($key,   $arrRet) {Array_push ($arrRet,  $key);} else{$arrRet []= $key;}}} return  $arrRet;} $arr 1 = array ("Channelnameshort" =>  "Baidu Time Company",     "ChannelName" Baidu Time Responsibility Co., Ltd. ",    " RAWURL "=" http://www.baidu.com ",    " logourl "="   "http://t11.baidu.com/it/u=3114404026,3614407463&fm=58",     "channeltype" =  array (     "210010004",     "210010007",),); $arr 2 =  Array ("Channelnameshort" =>  "Baidu Time Company",     "channelname" = "Baidu Online Company",      "RawUrl" = "http://www.baidu.com",     "Logourl" =>  "/HTTP/ T11.baidu.com/it/u=3114404026,3614407463&fm=58 ",      "Channeltype" => array (     "210010004",      "210010017",), Var_dump (Diffarray ($arr 1,  $arr 2));

Results:

Array 0 = String ' channelname ' (length=11) 1 = = String ' Channeltype ' (length=11)

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PHP vs. two different elements in a data