array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'cachingiterator.key.php', 1 => 'CachingIterator::key', ), 'up' => array ( 0 => 'class.cachingiterator.php', 1 => 'CachingIterator', ), 'prev' => array ( 0 => 'cachingiterator.hasnext.php', 1 => 'CachingIterator::hasNext', ), 'next' => array ( 0 => 'cachingiterator.next.php', 1 => 'CachingIterator::next', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/spl/cachingiterator/key.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 5, PHP 7, PHP 8)
CachingIterator::key — Return the key for the current element
本函数还未编写文档,仅有参数列表。
This method may return a key for the current element.
此函数没有参数。