DirectoryIterator::isDir()函数是PHP中的内置函数,用于检查当前DirectoryIterator项是否为目录。
用法:
bool DirectoryIterator::isDir( void )
参数:该函数不接受任何参数。
返回值:如果目录存在,则此函数返回TRUE,否则返回FALSE。
以下示例程序旨在说明PHP中的DirectoryIterator::isDir()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 element
if ($directory->isDir()) {
$file = $directory->current();
// Display the filename and its size
echo $file->getFilename() . " | Size: "
. $directory->getSize() . "<br>";
}
// Move to the next element
$directory->next();
}
?>
输出:
. | Size: 4096 .. | Size: 12288 dashboard | Size: 4096 img | Size: 0 webalizer | Size: 0 xampp | Size: 0
示例2:
<?php
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
// Loop runs while directory is valid
while ($directory->valid()) {
// Check for directory element
if ($directory->isDir()) {
$file = $directory->current();
// Display file name and last modified time
echo $file->getFilename() . " | MTime: "
. $directory->getMTime() . "<br>";
}
// Move to the next element
$directory->next();
}
?>
输出:
. | MTime: 1574654324 .. | MTime: 1574540515 dashboard | MTime: 1574350724 img | MTime: 1574350724 webalizer | MTime: 1574350718 xampp | MTime: 1574350724
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.isdir.php
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