- in_array: documentation ( source)
<?php
$array1 = array("te","1","we","no","1","sdfsdf","Resolved",'1');//old data
$array2 = array("another","0","we","yes","0","sdfsdf","Unresolved",'0'); //new updated data
$newArray = array();
foreach($array2 as $k=>$v){
if(!in_array($v,$array1)){
echo $v;
}
}