prev
prev
(PHP 4, PHP 5, PHP 7)
prev — Rewind 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.
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
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.
Note: You won't be able to distinguish the beginning of an array from a boolean
FALSEelement. To properly traverse an array which may containFALSEelements, see the each() function.
See Also
- current() - Return the current element in an array
- end() - Set the internal pointer of an array to its last element
- next() - Advance the internal pointer of an array
- reset() - Set the internal pointer of an array to its first element
- each() - Return the current key and value pair from an array and advance the array cursor
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.prev.php
