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
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.
Den här funktionen kan returnera det booleska värdet FALSE, men den kan också returnera ett icke-booleskt värde som är likvärdigt med FALSE, till exempel 0 eller "". Vänligen läs sektionen om booleska datatyper för mer information. Använd ===- operatorn för att testa returvärdet från den här funktionen.
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';
?>