array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'apcuiterator.key.php', 1 => 'APCUIterator::key', 2 => 'Get iterator key', ), 'up' => array ( 0 => 'class.apcuiterator.php', 1 => 'APCUIterator', ), 'prev' => array ( 0 => 'apcuiterator.gettotalsize.php', 1 => 'APCUIterator::getTotalSize', ), 'next' => array ( 0 => 'apcuiterator.next.php', 1 => 'APCUIterator::next', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/apcu/apcuiterator/key.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

APCUIterator::key

(PECL apcu >= 5.0.0)

APCUIterator::key — Get iterator key

说明

public APCUIterator::key(): string

Gets the current iterator key.

参数

此函数没有参数。

返回值

Returns the key on success, or false upon failure.

参见