PHP DirectoryIterator isDot()用法及代码示例

DirectoryIterator::isDot()函数是PHP中的内置函数，用于检查当前DirectoryIterator项是“。”还是“ ..”

用法:

bool DirectoryIterator::isDot( void )

参数：该函数不接受任何参数。

返回值：如果输入为，则此函数返回TRUE。或..，否则为FALSE。

以下示例程序旨在说明PHP中的DirectoryIterator::isDot()函数：

示例1:

<?php 
  
// Create a directory Iterator 
$directory = new DirectoryIterator(dirname(__FILE__)); 
  
// Loop runs for each element of directory 
foreach($directory as $dir) { 
      
    // Check if not a dot directory 
    if (!$dir->isDot()) { 
  
        // Display directory element and its permission 
        $perms = substr(sprintf('%o', $dir->getPerms()), -4); 
        echo $dir->getFilename() . " " 
        . " | Permission: " . $perms . "<br>"; 
    } 
} 
  
?>

输出：

applications.html | Permission: 0666
bitnami.css | Permission: 0666
dashboard | Permission: 0777
favicon.ico | Permission: 0666
geeks.PNG | Permission: 0666
gfg.php | Permission: 0666
img | Permission: 0777
index.php | Permission: 0666
Sublime Text Build 3211 x64 Setup.exe | Permission: 0777
webalizer | Permission: 0777
xampp | Permission: 0777

示例2:

<?php 
  
// Create a directory Iterator 
$directory = new DirectoryIterator(dirname(__FILE__)); 
  
// Loop runs while directory is valid 
while ($directory->valid()) { 
  
    // Check if not a dot directory 
    if (!$directory->isDot()) { 
        echo $directory->getFilename() . "<br>"; 
    } 
    $directory->next(); 
} 
  
?>

输出：

applications.html
bitnami.css
dashboard
favicon.ico
geeks.PNG
gfg.php
img
index.php
Sublime Text Build 3211 x64 Setup.exe
webalizer
xampp

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.isdot.php

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注：本文由纯净天空筛选整理自jit_t大神的英文原创作品 PHP | DirectoryIterator isDot() 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。