ArrayIterator::key

(PHP 5, PHP 7)

ArrayIterator::key — Return current array key

说明

public ArrayIterator::key ( void ) : mixed

This function returns the current array key

参数

此函数没有参数。

返回值

The current array key.

范例

Example #1 ArrayIterator::key() example

<?php
$array = array('key' => 'value');

$arrayobject = new ArrayObject($array);
$iterator = $arrayobject->getIterator();

echo $iterator->key(); //key
?>

相关文章
php arrayiterator return current array entryphp arrayiterator return current array keyphp arrayiterator check whether array contains more entriesphp cachingiterator return the key for the current elementphp directoryiterator return the key for the current directoryiterator itemphp apd 函数 return all current regular resources as an arrayphp cubrid mysql 兼容性函数 return an array with the lengths of the values of each field from the current rowphp cubrid mysql 兼容性函数 return a numerical array with the values of the current rowphp judy 函数 return the type of a judy arrayphp posix 函数 return the current process group identifierphp judy return the type of the current judy arrayphp judy return the size of the current judy arrayphp locale returns a key value array of locale id subtag elementsphp recursivetreeiterator get the key of the current elementphp simplexmliterator return current keyphp spldoublylinkedlist return current array entryphp splfixedarray return current array entryphp splfixedarray return current array indexphp splpriorityqueue return current node pointed by the iteratorphp swoole connection iterator return key of the current connection.
关注编程学问公众号