php - Find the differences in multi-dimensional array -


i want find different below arrays.

first array:

array ( [0] => array     (         [month] => 1         [year] => 2014         [total_days] => 2     )  [1] => array     (         [month] => 2         [year] => 2014         [total_days] => 2     )  [2] => array     (         [month] => 3         [year] => 2014         [total_days] => 2     )  [3] => array     (         [month] => 4         [year] => 2014         [total_days] => 2     )  [4] => array     (         [month] => 6         [year] => 2014         [total_days] => 1     )  [5] => array     (         [month] => 1         [year] => 2015         [total_days] => 1     ))

second array:

array ( [0] => array     (         [month] => 1         [year] => 2014         [total] => 4     )  [1] => array     (         [month] => 2         [year] => 2014         [total] => 6     )  [2] => array     (         [month] => 3         [year] => 2014         [total] => 5     )  [3] => array     (         [month] => 4         [year] => 2014         [total] => 6     )  [4] => array     (         [month] => 5         [year] => 2014         [total] => 2     )  [5] => array     (         [month] => 6         [year] => 2014         [total] => 2     )  [6] => array     (         [month] => 7         [year] => 2014         [total] => 2     )  [7] => array     (         [month] => 8         [year] => 2014         [total] => 1     )  [8] => array     (         [month] => 9         [year] => 2014         [total] => 1     )  [9] => array     (         [month] => 10         [year] => 2014         [total] => 2     ))

now how find total different between array2 array1 same year , same months?

for example in array2 has array [6] => array ( [month] => 7 [year] => 2014 [total] => 2 )

in array1 has same year , month in index array [4]. here how find total difference 2-1 = 1 ?

first append year,month , date....then find difference using date_diff()


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