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# prev

(PHP 3, PHP 4 , PHP 5)

prev -- Rewind the internal array pointer

## Description

mixed prev ( array &array)

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.

切記!
If the array contains empty elements then this function will return `FALSE` for these elements as well. To properly traverse an array which may contain empty elements see the each() function.

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

示範 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'; ?>`

See also current(), end(), next(), and reset().

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