- in_array: documentation ( source)
- array_keys: documentation ( source)
<?php
$array1 = array("te","yes","we","no","1","sdfsdf","Resolved");
$array2 = array("another","no","we","no","0","sdfsdf","Unresolved");
foreach($array2 as $k=>$v){
if(in_array($k,array_keys($array1))){
echo "Value $v exists \n";
}
}