array_slice() returns the
sequence of elements from the array
array as specified by the
offset and length
parameters.
If offset is positive,
the sequence will start at that offset in the array. If
offset is negative, the sequence will start that far
from the end of the
array.
If length is given and
is positive, then the sequence will have that many elements
in it. If length is given
and is negative then the sequence will stop that many
elements from the end of the array. If it is omitted, then
the sequence will have everything from
offset up until the end of the array.
Note that array_slice() will
ignore array keys, and will calculate offsets and lengths
based on the actual positions of elements within the
array.
See also array_splice().