PHP Functions Essential Reference

array_multisort

bool array_multisort(array array_1, [mixed ...]) 

array_1	Array to sort
...	Further arrays to sort, or sorting flags

Sorts one or more arrays.

Returns:

TRUE on success; FALSE on failure

Description:

This function sorts one or more arrays at a time, while keeping key/value relationships intact. The sorting is done as though the arrays were columns in a table. The first array is sorted, and identical elements are then sorted by the corresponding elements from the second array. Identical elements of the second array are then sorted by the corresponding elements from the third array, and so on. This example assumes that you have at least three arrays, of course.

After the first argument, array_1 , which must be an array, any ...