MultipleIterator::__construct

(PHP 5 >= 5.3.0)

MultipleIterator::__construct — Constructs a new MultipleIterator

说明

public MultipleIterator::__construct ([ int $flags = MultipleIterator::MIT_NEED_ALL|MultipleIterator::MIT_KEYS_NUMERIC ] )

Construct a new MultipleIterator.

参数

flags

The flags to set, according to the Flag Constants.

MultipleIterator::MIT_NEED_ALL or MultipleIterator::MIT_NEED_ANY
MultipleIterator::MIT_KEYS_NUMERIC or MultipleIterator::MIT_KEYS_ASSOC

Defaults to MultipleIterator::MIT_NEED_ALL | MultipleIterator::MIT_KEYS_NUMERIC .

返回值

没有返回值。

范例

Example #1 Iterating a MultipleIterator

  <?php
$people  = new  ArrayIterator (array( 'John' ,  'Jane' ,  'Jack' ,  'Judy' ));
 $roles   = new  ArrayIterator (array( 'Developer' ,  'Scrum Master' ,  'Project Owner' ));

 $team  = new  MultipleIterator ( $flags );
 $team -> attachIterator ( $people ,  'person' );
 $team -> attachIterator ( $roles ,  'role' );

foreach ( $team  as  $member ) {
     print_r ( $member );
}
 ?>

Output with $flags = MIT_NEED_ALL|MIT_KEYS_NUMERIC

Array
(
    [0] => John
    [1] => Developer
)
Array
(
    [0] => Jane
    [1] => Scrum Master
)
Array
(
    [0] => Jack
    [1] => Project Owner
)

Output with $flags = MIT_NEED_ANY|MIT_KEYS_NUMERIC

Array
(
    [0] => John
    [1] => Developer
)
Array
(
    [0] => Jane
    [1] => Scrum Master
)
Array
(
    [0] => Jack
    [1] => Project Owner
)
Array
(
    [0] => Judy
    [1] =>
)

Output with $flags = MIT_NEED_ALL|MIT_KEYS_ASSOC

Array
(
    [person] => John
    [role] => Developer
)
Array
(
    [person] => Jane
    [role] => Scrum Master
)
Array
(
    [person] => Jack
    [role] => Project Owner
)

Output with $flags = MIT_NEED_ANY|MIT_KEYS_ASSOC

Array
(
    [person] => John
    [role] => Developer
)
Array
(
    [person] => Jane
    [role] => Scrum Master
)
Array
(
    [person] => Jack
    [role] => Project Owner
)
Array
(
    [person] => Judy
    [role] =>
)

参见

Flag Constants
MultipleIterator::valid() - Checks the validity of sub iterators