DirectoryIterator::next()函数是PHP中的内置函数,用于向前移至下一个DirectoryIterator项。
用法:
void DirectoryIterator::next( void )
参数:该函数不接受任何参数。
返回值:该函数不返回任何值。
以下示例程序旨在说明PHP中的DirectoryIterator::next()函数:
示例1:
<?php
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
// Loop runs while directory is valid
while ($directory->valid()) {
// Check for directory
if($directory->isDir()) {
// Display key and file name
echo $directory->key() . " => " .
$directory->getFilename() . "<br>";
}
// Move to the next element
$directory->next();
}
?>
输出:
0 => . 1 => .. 4 => dashboard 8 => img 11 => webalizer 12 => xampp
示例2:
<?php
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
// Loop runs while directory is valid
while ($directory->valid()) {
// Check for file element
if($directory->isFile()) {
// Display the filename
echo $directory->getFilename() . "<br>";
}
// Move to the next element
$directory->next();
}
?>
输出:
applications.html bitnami.css favicon.ico geeks.PNG gfg.php index.php Sublime Text Build 3211 x64 Setup.exe
注意:此函数的输出取决于服务器文件夹的内容。
参考: https://www.php.net/manual/en/directoryiterator.next.php
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