SplObjectStorage::next()函数是PHP中的内置函数,用于移至下一个存储项。
用法:
void SplObjectStorage::next()
参数:该函数不接受任何参数。
返回值:该函数不返回任何值。
以下程序说明了PHP中的SplObjectStorage::next()函数:
示例1:
<?php
// Create an empty SplObjectStorage
$str = new SplObjectStorage();
$obj = new StdClass;
$obj2 = new StdClass;
// Use attach() function to add object
$str->attach($obj, "GFG");
$str->attach($obj2, "Geeks");
$str->rewind();
// Get the current data
var_dump($str->getInfo());
// Move on to next object
$str->next();
// Print result of next entry
var_dump($str->getInfo());
?>
输出:
string(3) "GFG" string(5) "Geeks"
示例2:
<?php
// Create an Empty SplObjectStorage
$str = new SplObjectStorage();
$obj1 = new StdClass;
$obj2 = new StdClass;
$obj3 = new StdClass;
$obj4 = new StdClass;
// Use attach() function to add object
$str->attach($obj1, "GeksforGeeks");
$str->attach($obj2, "GFG");
$str->attach($obj3);
$str->attach($obj4, "DSA");
$str->rewind();
// Iterate and print data on each index
while($str->valid()) {
// Get index
$index = $str->key();
$object = $str->current();
$data = $str->getInfo();
var_dump($index, $data);
// Moving each time next entry
$str->next();
}
?>
输出:
int(0) string(12) "GeksforGeeks" int(1) string(3) "GFG" int(2) NULL int(3) string(3) "DSA"
参考: https://www.php.net/manual/en/splobjectstorage.next.php
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注:本文由纯净天空筛选整理自R_Raj大神的英文原创作品 PHP | SplObjectStorage next() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。