array_reduce

(PHP 4 >= 4.0.5)

array_reduce --  Iteratively reduce the array to a single value using a callback function

Description

mixed array_reduce ( array input, mixed callback [, int initial])

array_reduce() applies iteratively the callback function to the elements of the array input, so as to reduce the array to a single value. If the optional initial is available, it will be used at the beginning of the process, or as a final result in case the array is empty.

This will result in $b containing 15, $c containing 1200 (= 1*2*3*4*5*10), and $d containing 1.

See also array_filter() and array_map().