NEXT(3) 1 NEXT(3)next - Advance the internal array pointer of an arraySYNOPSIS
mixed next (array &$array)
DESCRIPTION next(3) behaves like current(3), 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.
PARAMETERS
o $array
- The array being affected.
RETURN VALUES
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.
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 next(3) 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); // $mode = 'plane';
?>
NOTES
Note
You won't be able to distinguish the end of an array from a boolean FALSE element. To properly traverse an array which may contain
FALSE elements, see the each(3) function.
SEE ALSO current(3), end(3), prev(3), reset(3), each(3).
PHP Documentation Group NEXT(3)
Check Out this Related Man Page
KEY(3) 1 KEY(3)key - Fetch a key from an arraySYNOPSIS
mixed key (array &$array)
DESCRIPTION key(3) returns the index element of the current array position.
PARAMETERS
o $array
- The array.
RETURN VALUES
The key(3) function simply returns the key of the array element that's currently being pointed to by the internal pointer. It does not
move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, key(3) returns NULL.
EXAMPLES
Example #1
key(3) example
<?php
$array = array(
'fruit1' => 'apple',
'fruit2' => 'orange',
'fruit3' => 'grape',
'fruit4' => 'apple',
'fruit5' => 'apple');
// this cycle echoes all associative array
// key where value equals "apple"
while ($fruit_name = current($array)) {
if ($fruit_name == 'apple') {
echo key($array).'<br />';
}
next($array);
}
?>
The above example will output:
fruit1<br />
fruit4<br />
fruit5<br />
SEE ALSO current(3), next(3).
PHP Documentation Group KEY(3)
hi all,
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