PHP 7.1.24 Released

ArrayIterator::valid

(PHP 5, PHP 7)

ArrayIterator::validCheck whether array contains more entries

说明

public bool ArrayIterator::valid ( void )

Checks if the array contains any more entries.

参数

此函数没有参数。

返回值

Returns TRUE if the iterator is valid, otherwise FALSE

范例

Example #1 ArrayIterator::valid() example

<?php
$array 
= array('1' => 'one');

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

var_dump($iterator->valid()); //bool(true)

$iterator->next(); // advance to the next item

//bool(false) because there is only one array element
var_dump($iterator->valid());
?>

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