array functions

• array_key_prefix($arr,$prefix) - prefix array keys name

• array_sum_merge($array1,$array2) - merge two arrays and summing values with same key

• array_values_recursive($array) - flaten multi-dimensional array

• array_clean($array) - remove keys with empty value

• array_over($arr,$ins) - merge two arrays without reindexing

• array_values2($arr,...) - merge more arrays

• array_equal($a, $b) - true if a and b array equal by values

• array_identical($a, $b) - true if a and b array identical

• mb_unserialize($string) - unserialize multibyte serialized string

• array_map_recursive($func,$arr) - map function recursive