ArrayIterator::current

Description

mixed ArrayIterator::current ( void )

This function returns the current array entry

例子 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"; } ?>
上例将输出：
1 => one 2 => two 3 => three

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pcdinh at phpvietnam dot net
20-Mar-2006 09:47


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/>\\\';

}

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