PHP next function

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next

(PHP 3, PHP 4, PHP 5)

Returns the array value in the next place that’s pointed to by the
internal array pointer, or FALSE if there are no more elements.

next() behaves like
current(), with one difference. It advances
the internal array pointer one place forward before returning the
element value. That means it returns the next array value and
advances the internal array pointer by one. If advancing the
internal array pointer results in going beyond the end of the
element list, next() returns FALSE.

This function may
return Boolean FALSE, but may also return a non-Boolean value which
evaluates to FALSE, such as 0 or
“”. Please read the section on Booleans for more
information. Use the ===
operator for testing the return value of this
function.

Note:
You won’t be able to distinguish the end of an array from a
boolean FALSE element. To properly traverse an array
which may contain FALSE elements, see the each()
function.

Example 1. Example use of next() and friends

$transport = array('foot', 'bike', 'car', 'plane');
$mode = current($transport); // $mode = 'foot';
$mode = next($transport);    // $mode = 'bike';
$mode = next($transport);    // $mode = 'car';
$mode = prev($transport);    // $mode = 'bike';
$mode = end($transport);     // $mode = 'plane';

See also
current(), end(),
prev(), reset(),
and each().