MultipleIterator::attachIterator()

(PHP 5 >= 5.3.0, PHP 7)

Attaches iterator information

说明

publicMultipleIterator::attachIterator( Iterator$iterator[,string $infos] ): void

Attaches iterator information.

Warning

本函数还未编写文档，仅有参数列表。

参数

$iterator

The new iterator to attach.

$infos

The associative information for the Iterator, which must be an integer, a string, or NULL.

返回值

Description...

错误／异常

An IllegalValueException if the $iterator parameter is invalid, or if $infos is already associated information.

参见

• MultipleIterator::__construct() Constructs a new MultipleIterator

<?php
$ait_id = new ArrayIterator(array('c1001', 'c1002', 'c1003'));
$ait_name = new ArrayIterator(array('apple', 'orange', 'banana'));
$ait_units = new ArrayIterator(array(756, 996, 2345));
$mit = new MultipleIterator(MultipleIterator::MIT_KEYS_ASSOC);
$mit->attachIterator($ait_id, "ID");
$mit->attachIterator($ait_name, "NAME");
$mit->attachIterator($ait_units, "UNITS");
echo $mit->countIterators() . "\n"; //3
if ($mit->containsIterator($ait_id)) { //true
  echo "ait_id iterator attached \n";
}
foreach ($mit as $fruit) {
  echo "<pre>";
  print_r($fruit);
  echo "</pre>";
}
?>
Result:
3
ait_id iterator attached
Array
(
  [ID] => c1001
  [NAME] => apple
  [UNITS] => 756
)
Array
(
  [ID] => c1002
  [NAME] => orange
  [UNITS] => 996
)
Array
(
  [ID] => c1003
  [NAME] => banana
  [UNITS] => 2345
)

If you have multiple file upload fields named "files[]"...
<?php
if (isset($_FILES["files"])) {
  $uploads = new MultipleIterator(MultipleIterator::MIT_KEYS_ASSOC);
  $uploads->attachIterator(new ArrayIterator((array) $_FILES["files"]["name"]), "name");
  $uploads->attachIterator(new ArrayIterator((array) $_FILES["files"]["size"]), "size");
  $uploads->attachIterator(new ArrayIterator((array) $_FILES["files"]["type"]), "type");
  $uploads->attachIterator(new ArrayIterator((array) $_FILES["files"]["tmp_name"]), "tmp_name");
  $uploads->attachIterator(new ArrayIterator((array) $_FILES["files"]["error"]), "error");
  foreach ($uploads as $file) {
   echo htmlspecialchars($file["name"]) . " = {$file["size"]} bytes<br/>";
  }
}
?>