ArrayIterator::current

(PHP 5, PHP 7)

ArrayIterator::current — Return current array entry

说明

public ArrayIterator::current ( void ) : mixed

Get the current array entry.

参数

此函数没有参数。

返回值

The current array entry.

范例

Example #1 ArrayIterator::current() example

<?php
$array = array('1' => 'one',
               '2' => 'two',
               '3' => 'three');

$arrayobject = new ArrayObject($array);

for($iterator = $arrayobject->getIterator();
    $iterator->valid();
    $iterator->next()) {

    echo $iterator->key() . ' => ' . $iterator->current() . "\n";
}
?>

以上例程会输出：

1 => one
2 => two
3 => three

User Contributed Notes

pcdinh at phpvietnam dot net 20-Mar-2006 05:47
ArrayIterator is only used for interating simple arrays of which the value part is not another array. You can test it with a more complex array like this:

$arr = array (
    \\\'Section 1\\\' => array (
        \\\'Cat 1\\\' => array (
            1 => array (
                1 => \\\'So 1\\\',
                2=> \\\'So 2\\\'
            ),
            2 => \\\'So 2\\\'
        ),
       
        \\\'Cat 2\\\' => array (
            \\\'Sub-cat 1\\\' => array (
                1 => \\\'So 1\\\',
                2=> \\\'So 2\\\'
            ),
            \\\'Sub-cat 2\\\' => \\\'So 2\\\'
        )
    ),
   
    \\\'Section 2\\\' => array (
        \\\'Cat 1\\\' => array (   
           
        ),
       
        \\\'Cat 2\\\' => array (
            \\\'Sub-cat 1\\\' => array (
                1 => \\\'So 1\\\',
                2=> \\\'So 2\\\'
            ),
            \\\'Sub-cat 2\\\' => \\\'So 2\\\'
        )
    )
);

$arrayobject = new ArrayObject($arr);

for($iterator = $arrayobject->getIterator();
   $iterator->valid();
   $iterator->next()) {

   echo $iterator->key() . \\\' => \\\' . $iterator->current() . \\\"<br />\\\";
}

The above scriptlet will return

Section 1 => Array
Section 2 => Array

because it can not recursively iterate throught the array.

Do the following instead (in PHP5.1):

$arrayIterator = new RecursiveArrayIterator($arr);
$iterator = new RecursiveIteratorIterator($arrayIterator);
foreach ($iterator as $val) {
    echo $val.\\\'<br/>\\\';
}