(PHP 4, PHP 5, PHP 7)
current — Return the current element in an array
Every array has an internal pointer to its "current" element, which is initialized to the first element inserted into the array.
arrayThe array.
The current() function simply returns the
value 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, current() returns FALSE.
Această funcție poate întoarce valoarea Boolean FALSE, dar poate de
asemenea întoarce o valoare non-Boolean care evaluează în FALSE. Vă rugăm să
citiți secțiunea despre tipul Boolean
pentru informații suplimentare. Utilizați
operatorul === pentru a
verifica valoarea întoarsă de această funcție.
| Versiune | Descriere |
|---|---|
| 7.0.0 |
array is now always passed by value.
Prior to this version, it was passed by reference if possible,
and by value otherwise.
|
Example #1 Example use of current() and friends
<?php
$transport = array('foot', 'bike', 'car', 'plane');
$mode = current($transport); // $mode = 'foot';
$mode = next($transport); // $mode = 'bike';
$mode = current($transport); // $mode = 'bike';
$mode = prev($transport); // $mode = 'foot';
$mode = end($transport); // $mode = 'plane';
$mode = current($transport); // $mode = 'plane';
$arr = array();
var_dump(current($arr)); // bool(false)
$arr = array(array());
var_dump(current($arr)); // array(0) { }
?>
Notă: The end of an array and the result of calling current() on an empty array are indistinguishable from a boolean
FALSEelement. To properly traverse an array which may containFALSEelements, see the foreach() function. To still use current() and properly check if the value is really an element of the array, the key() of the current() element should be checked to be strictly different fromNULL.