current
(PHP 4, PHP 5, PHP 7)
current — Return the current element in an array
Description
Every array has an internal pointer to its "current" element, which is initialized to the first element inserted into the array.
Return Values
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.
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.
Changelog
| Version | Description |
|---|---|
| 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.
|
Examples
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) { }
?>
Notes
Note: 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.
See Also
- end() - Set the internal pointer of an array to its last element
- key() - Fetch a key from an array
- each() - Return the current key and value pair from an array and advance the array cursor
- prev() - Rewind the internal array pointer
- reset() - Set the internal pointer of an array to its first element
- next() - Advance the internal pointer of an array
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
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References
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