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next

(PHP 4, PHP 5, PECL axis2:0.1.0-0.1.1 xmlreader:1.0-1.0.1)

next — Advance the internal array pointer of an array

Description

mixed next ( array &$array )

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.

Warning

本函式可能回傳布林值 FALSE,但也可能回傳一個與 FALSE 等值的非布林值,例如 0 或者 ""。請參閱布林類型章節以獲取更多訊息。應使用 === 運算符來測試本函式的回傳值。

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

<?php
$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().