note 57671 added to function.key
| From: | php_notes at ionws dot com | Date: | Mon, 10 Oct 2005 23:17:44 +0000 |
| Subject: | note 57671 added to function.key | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-96801@lists.php.net to get a copy of this message | ||
Note that key($array) returns NULL if $array's internal pointer goes past the end of the array.
For example, the following code:
<?php
$arr = array(
'one' => '1',
'two' => '2',
'three' => '3',
'four' => '4',
'five' => '5');
for ($i = 0; $i < 10; $i++) {
var_dump(key($arr));
next($arr);
}
?>
results in:
string(3) "one"
string(3) "two"
string(5) "three"
string(4) "four"
string(4) "five"
NULL
NULL
NULL
NULL
NULL
----
Manual Page -- http://www.php.net/manual/en/function.key.php
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