Array Functions
PHP Manual

prev

(PHP 4, PHP 5, PHP 7)

prevRewind the internal array pointer

Description

mixed prev ( array &$array )

Rewind the internal array pointer.

prev() behaves just like next(), except it rewinds the internal array pointer one place instead of advancing it.

Parameters

array

The input array.

Return Values

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

Warning

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

Examples

Example #1 Example use of prev() 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';
?>

Notes

Note: The beginning of an array is indistinguishable from a boolean FALSE element. To make the distinction, check that the key() of the prev() element is not NULL.

See Also


Array Functions
PHP Manual