array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'weakmap.getiterator.php', 1 => 'WeakMap::getIterator', 2 => '接收一个外部迭代器', ), 'up' => array ( 0 => 'class.weakmap.php', 1 => 'WeakMap', ), 'prev' => array ( 0 => 'weakmap.count.php', 1 => 'WeakMap::count', ), 'next' => array ( 0 => 'weakmap.offsetexists.php', 1 => 'WeakMap::offsetExists', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'zh', 'path' => 'language/predefined/weakmap/getiterator.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

WeakMap::getIterator

(PHP 8)

WeakMap::getIterator — 接收一个外部迭代器

说明

public WeakMap::getIterator(): Iterator

返回一个外部迭代器.

参数

此函数没有参数。

返回值

一个实现了 Iterator 或者 Traversable 的类实例

错误／异常

失败时抛出 Exception。