Php Array Difference By Value. I did some trials and if you know the approximate size of the arrays then it would seem to be a lot faster to do this php. Php original array 1 2 3.
If you store a string of keys in a database field and want to match them to a static array of values this is a quick way to do it without loops. A a c new array values array diff key new int. Array udiff will walk through array values a and array values b and compare each value by using the passed in callback function.
This cute works by reference and modifies the arrays deleting coincidences on both and leaving intact the non coincidences.
The array diff function is used to compares an array against one or more other arrays and returns the values in the first array that are not present in any of the other arrays. The array diff function is used to compares an array against one or more other arrays and returns the values in the first array that are not present in any of the other arrays. I did some trials and if you know the approximate size of the arrays then it would seem to be a lot faster to do this php. Computes the difference of arrays.
