DirectoryIterator::isFile

(PHP 5, PHP 7)

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

说明

public bool DirectoryIterator::isFile ( void )

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

Example #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

User Contributed Notes

Philipp W. gnurepublic_at_linuxmail.org 30-Jul-2007 11:49
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();
    }

}
?>
DieselDriver at edu dot uni-klu dot ac dot at 24-Apr-2007 05:17
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";
    }
 }
kencomer at NOSPAM dot kencomer dot com 14-Sep-2005 03:49
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 */
  }
}
?>
ludvig dot ericson at gmail dot com 31-Aug-2005 01:29
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() ? "/" : "");
    }
}
?>