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prev (PHP 3, PHP 4, PHP 5) prev -- Rewind the internal array pointer Descriptionmixed 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.
| Warning | This function may
return Boolean FALSE, but may also return a non-Boolean value which
evaluates to FALSE, such as 0 or
"". 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 FALSE element. To properly traverse an array
which may contain FALSE elements, see the each()
function.
prev() behaves just like
next(), except it rewinds the internal array
pointer one place instead of advancing it.
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';
?> |
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See also current(), end(),
next(), reset(),
and each().
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