ArrayIterator::current()

(PHP 5,PHP 7)

Return current array entry

说明

publicArrayIterator::current(void) : mixed

Get the currentarrayentry.

参数

此函数没有参数。

返回值

The currentarrayentry.

范例

Example#1ArrayIterator::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

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/>\\\';
}