$extens= $_GET['extsn']; //comma seperated values; 200,201
$extss = explode(",",$extens); //puts it into an array
echo "The nums to delete :".$extens;
/**********get existing extens from the DB*********/
$stmt = $db->query("SELECT val from queues where name='extension' and id='$group_number'");
$row = $stmt->fetch(PDO::FETCH_ASSOC);
$existing_exts= implode(",",$row); //200,201,202,203
echo "Existing nos ".$existing_exts;
/*****End************/
$exten_array =array_diff($extss,$row);
$exten_nos=implode(",",$exten_array);
echo "difference is :". $exten_nos; //output is 200,201
$array1=array('blue','red'
$array2=array('blue','yell
array_merge(array_diff($ar
Result
------
Array
(
[0] => red
[1] => yellow
)