Method column()

Method column

array column(array data, mixed index)

Description

Extract a column from a two-dimensional array.

This function is exactly equivalent to:

map(data, lambda(mixed x,mixed y) { return x[y]; }, index)

Except of course it is a lot shorter and faster. That is, it indices every index in the array data on the value of the argument index and returns an array with the results.

See also

rows()