Description
array
each ( array array)
Returns the current key and value pair from the array
array and advances the array cursor. This
pair is returned in a four-element array, with the keys
0, 1,
key, and
value. Elements 0 and
key contain the key name of the array
element, and 1 and
value contain the data.
If the internal pointer for the array points past the end of the
array contents, each() returns
FALSE.
Example 1. each() examples $foo = array ("bob", "fred", "jussi", "jouni", "egon", "marliese");
$bar = each ($foo); |
$bar now contains the following key/value
pairs:
- 0 => 0
- 1 => 'bob'
- key => 0
- value => 'bob'
$foo = array ("Robert" => "Bob", "Seppo" => "Sepi");
$bar = each ($foo); |
$bar now contains the following key/value
pairs:
- 0 => 'Robert'
- 1 => 'Bob'
- key => 'Robert'
- value => 'Bob'
|
each() is typically used in conjunction with
list() to traverse an array; for instance,
$HTTP_POST_VARS:
Example 2.
Traversing $HTTP_POST_VARS with
each()
echo "Values submitted via POST method:<br>";
reset ($HTTP_POST_VARS);
while (list ($key, $val) = each ($HTTP_POST_VARS)) {
echo "$key => $val<br>";
} |
|
After each() has executed, the array cursor
will be left on the next element of the array, or on the last
element if it hits the end of the array. You have to use
reset() if you want to traverse the array
again using each.
See also key(), list(),
current(), reset(),
next(), and prev().
