PHP | CachingIterator getInnerIterator()函数
CachingIterator::getInnerIterator()函数是PHP中的一个内置函数,用于返回发送给构造函数的迭代器。
句法:
Iterator CachingIterator::getInnerIterator( void )
参数:此函数不接受任何参数。
返回值:此函数返回一个实现 Iterator 接口的对象。
下面的程序说明了PHP中的 CachingIterator::getInnerIterator()函数:
方案一:
hasNext()) {
echo ", ";
}
}
?>
输出:
G, e, e, k, s
方案二:
"Geeks",
"b" => "for",
"c" => "Geeks",
"d" => "Computer",
"e" => "Science",
"f" => "Portal"
);
// Create a new CachingIterator
$cachIt = new CachingIterator(
new ArrayIterator($arr),
CachingIterator::FULL_CACHE
);
foreach($cachIt as $key => $value) {
echo $key . " => " . $value;
if($cachIt->hasNext()) {
echo "\n";
}
}
?>
输出:
a => Geeks
b => for
c => Geeks
d => Computer
e => Science
f => Portal
参考: https://www. PHP.net/manual/en/cachingiterator.getinneriterator。 PHP