PHP - Manual: DirectoryIterator::isFile

2024-11-14

DirectoryIterator::isLink »

« DirectoryIterator::isExecutable

DirectoryIterator::isFile

(PHP 5, PHP 7, PHP 8)

DirectoryIterator::isFile — Determine if current DirectoryIterator item is a regular file

说明

public DirectoryIterator::isFile(): bool

Determines if the current DirectoryIterator item is a regular file.

参数

此函数没有参数。

返回值

Returns true if the file exists and is a regular file (not a link or dir), otherwise false

范例

示例 #1 DirectoryIterator::isFile() example

This example will list all regular files in the directory containing the script.


<?php
$iterator = new DirectoryIterator(dirname(__FILE__));
foreach ($iterator as $fileinfo) {
    if ($fileinfo->isFile()) {
        echo $fileinfo->getFilename() . "\n";
    }
}
?>

以上例程的输出类似于：

apple.jpg
banana.jpg
example.php
pears.jpg

参见

DirectoryIterator::getType() - Determine the type of the current DirectoryIterator item
DirectoryIterator::isDir() - Determine if current DirectoryIterator item is a directory
DirectoryIterator::isDot() - Determine if current DirectoryIterator item is '.' or '..'
DirectoryIterator::isLink() - Determine if current DirectoryIterator item is a symbolic link

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User Contributed Notes 5 notes

down

dev at mike dot pp dot ua ¶

3 years ago


Documentation is a bit misleading.

DirectoryIterator->isFile() and other classes (e.g. SplFileInfo->isFile()) return TRUE for symlinks of files. Better use getType() method instead, which returns 'link' for symlinks.

This was reported long time ago - https://bugs.php.net/bug.php?id=72364 , but docs are still not fixed.

down

Philipp W. gnurepublic_at_linuxmail.org ¶

14 years ago


to actually sort a directoryiterator you need to subclass the iterator and use a comparator function similar to this one

<?php
function cmpSPLFileInfo( $splFileInfo1, $splFileInfo2 )
{
    return strcmp( $splFileInfo1->getFileName(), $splFileInfo2->getFileName() );
}

class DirList extends RecursiveDirectoryIterator
{
    private $dirArray;

    public function __construct( $p )
    {
        parent::__construct( $p );
        $this->dirArray = new ArrayObject();
        foreach( $this as $item )
        {
            $this->dirArray->append( $item );
        }
        $this->dirArray->uasort( "cmpSPLFileInfo" );
    }

    public function getIterator()
    {
        return $this->dirArray->getIterator();
    }

}
?>

down

DieselDriver at edu dot uni-klu dot ac dot at ¶

15 years ago


shows all .jpg files in the current directory but how does the DirectoryIterator sort the output!?

$dir=new DirectoryIterator("./");
foreach ($dir as $file) {
  if ($dir->isDot()) {continue;}    //removes . and ..
    if (strripos($file,".jpg")==true) {
      echo $file . "<br>\n";
    }
 }

down

kencomer at NOSPAM dot kencomer dot com ¶

16 years ago


I put in an example in __autoload, but it is useful here, too...

Yet another class/interface __autoload function. Includes an example usage of the SPL DirectoryIterator class, a settable case-ignore flag, and support for multiple file name patterns to allow easy integration from multiple sources.

<?php
/**
 * __autoload
 *
 * @author Ken Comer 
 * @copyright released into public domain 2005 Ken Comer
 */

define('IGNORE_CASE',true);
// comment out the define() of IGNORE_CASE to be
//   case-sensitive. I like to ignore case so that I can
//   use UPPERCASE for the test versions of the file.

/**
 * autoloads classes and interfaces for PHP5
 * 
 * @author Ken Comer
 */

function __autoload($class_name) {

  // This will be set the first time through.
  // Put your default values in the place indicated
  //    below so as to eliminate possible duplicates
  //    in the .ini include_path
  static $possible_path = NULL;
  // Leave this as NULL.

  
  // List here whatever formats you use for your
  //    file names. Note that, if you autoload
  //    a class that implements a non-loaded interface,
  //    you will also need to autoload that interface.
  static $permitted_formats = array(
    "&CLASS.class.inc"
    ,"&CLASS.class.inc.php"
    ,"&CLASS.class.inc.php5"
    ,"class.&CLASS.inc"
    ,"class.&CLASS.inc.php"
    ,"class.&CLASS.inc.php5"
    ,"&CLASS.interface.inc"
    ,"&CLASS.interface.inc.php"
    ,"&CLASS.interface.inc.php5"
    ,"i&CLASS.interface.inc"
    ,"i&CLASS.interface.inc.php"
    ,"i&CLASS.interface.inc.php5"
  );
  //  Put the &CLASS wherever the $class_name 
  //    might appear

  // Only executed the first time __autoload is called
  if (NULL===$possible_path):
    // These are the default paths for this application
    $possible_path = array_flip(array(
        "."
        ,".."
        ,"../include"
        ,"/public_html/php/include"
    ));
    // Customize this yourself, but leave the
    //      array_flip alone. We will use this
    //      to get rid of duplicate entries from the
    //      include_path .ini list.

    // Merge the flipped arrays to get rid of duplicate
    //      "keys" (which are really the valid include
    //      paths) then strip out the keys leaving only
    //      uniques. This is marginally faster than
    //      using array_combine and array_unique and
    //      much more elegant. Okay, it's weird, too.
    $possible_path = array_keys(array_merge($possible_path,
            array_flip(explode(ini_get("include_path"),";"))));
  endif; /* static $possible_path initialization */

  $possibility = str_replace("&CLASS",$class_name,$permitted_formats);

  foreach ( $possible_path as $directory ) {
    if (!file_exists($directory) or !is_dir($directory))
    {
      continue;
    }
    $file_to_check = new DirectoryIterator($directory);

    foreach ( $file_to_check as $file ) {
      // ignore directories and files that do not contain
      // $class_name
      if ( !$file->isDir()
          and ( defined(IGNORE_CASE) && TRUE===IGNORE_CASE )
            ? stripos($file->getFileName(),$class_name)
            : strpos($file->getFileName(),$class_name) ) :
        
        // class_name was included, now compare against
        // all permitted file name patterns
        foreach ( $possibility as $compare ):
            if ((defined(IGNORE_CASE) && TRUE===IGNORE_CASE )
                ? !strcasecmp($compare,$file->getFileName())
                : $compare===$file->getFileName()
            ) {
              // by using $compare, you will get a qualified
              //    file name
              include_once($compare);
              return TRUE;
            }
        endforeach; /* $possibility */

      endif;
    } /* foreach $file_to_check */
  }
}
?>

down

ludvig dot ericson at gmail dot com ¶

16 years ago


Usage:

<?php

//open current directory

$dir = new DirectoryIterator(".");

// use do .. while since we need to iterate atleast once

// and the first two items are always "." and ".."

do  {

    // if it isn't "." or ".."

    if (!$dir->isDot()) {

        // echo out pathname and "/" if it's a directory

        echo $dir->getPathname() . ($dir->isDir() ? "/" : "");

    }

} while ($dir->next())

?>



Outputs something like:

/path/file1

/path/dir1/

/path/file2

/path/file3

/path/dir2/


---

Note from the extension author:


Try this:


<?php

foreach(new DirectoryIterator(".") as $file)

{

    if (!$file->isDot()) {

        echo $file->getPathname() . ($file->isDir() ? "/" : "");

    }

}

?>

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官方地址：https://www.php.net/manual/en/directoryiterator.isfile.php

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PHP官方手册 - 互联网笔记

DirectoryIterator::isFile

说明

参数

返回值

范例

参见

User Contributed Notes 5 notes