CachingIterator::current()函數是PHP中的內置函數,用於返回當前元素。
用法:
mixed CachingIterator::current( void )
參數:該函數不接受任何參數。
返回值:此函數返回CachingIterator的當前值。
以下示例程序旨在說明PHP中的CachingIterator::current()函數:
示例1:
<?php
// Declare an array
$arr = array('G', 'e', 'e', 'k', 's');
// Create a new CachingIterator
$cachIt = new CachingIterator(
new ArrayIterator($arr),
CachingIterator::FULL_CACHE
);
// Display the result
foreach($cachIt as $element) {
echo $cachIt->current() . " ";
}
?>
輸出:
G e e k s
示例2:
<?php
// Declare an ArrayIterator
$arr = array(
"a" => "Geeks",
"b" => "for",
"c" => "Geeks",
"d" => "Computer",
"e" => "Science",
"f" => "Portal"
);
// Create a new CachingIterator
$cachIt = new CachingIterator(
new ArrayIterator($arr),
CachingIterator::FULL_CACHE
);
// Display the result
foreach($cachIt as $element) {
echo $cachIt->current() . "\n";
}
?>
輸出:
Geeks for Geeks Computer Science Portal
參考: https://www.php.net/manual/en/cachingiterator.current.php
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