I have three array from dynamic data in php for example :
array1 = array('10-11-2015'=>23.6,
'25-11-2015'=>48.6,
'12-11-2015'=>14.52);
array2 = array('10-11-2015'=>8.7,
'22-10-2015'=>86.6,
'12-11-2015'=>78.5);
array3 = array('10-11-2015'=>5.8,
'19-09-2015'=>3.6,
'12-11-2015'=>96.4);
newarray = array('10-11-2015','12-11-2015');
array_intersect_key
Something like this?
array_keys(array_intersect_key($array1, $array2, $array3));