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DirectoryIterator::__construct> <CallbackFilterIterator::__construct
[edit] Last updated: Fri, 25 May 2012

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DirectoryIterator クラス

(PHP 5)

導入

DirectoryIterator クラスは、 ファイルシステムのディレクトリを閲覧するためのシンプルなインターフェイスです。

クラス概要

DirectoryIterator extends SplFileInfo implements Iterator , Traversable , SeekableIterator {
/* メソッド */
public __construct ( string $path )
public DirectoryIterator current ( void )
public int getATime ( void )
public string getBasename ([ string $suffix ] )
public int getCTime ( void )
public string getExtension ( void )
public string getFilename ( void )
public int getGroup ( void )
public int getInode ( void )
public int getMTime ( void )
public int getOwner ( void )
public string getPath ( void )
public string getPathname ( void )
public int getPerms ( void )
public int getSize ( void )
public string getType ( void )
public bool isDir ( void )
public bool isDot ( void )
public bool isExecutable ( void )
public bool isFile ( void )
public bool isLink ( void )
public bool isReadable ( void )
public bool isWritable ( void )
public string key ( void )
public void next ( void )
public void rewind ( void )
public void seek ( int $position )
public string __toString ( void )
public bool valid ( void )
}

変更履歴

バージョン 説明
5.1.2 DirectoryIterator は SplFileInfo を継承するようになりました。

目次



DirectoryIterator::__construct> <CallbackFilterIterator::__construct
[edit] Last updated: Fri, 25 May 2012
 
add a note add a note User Contributed Notes DirectoryIterator
Kunal Bhatia->kmasterzone@gmail dot com 15-Apr-2011 02:48
Deleting all files in a directory except the one which is last modified.
<?php
    $directory = dirname(__FILE__)."/demo";
    $filenames = array();
    $iterator = new DirectoryIterator($directory);
    foreach ($iterator as $fileinfo) {
        if ($fileinfo->isFile()) {
            $filenames[$fileinfo->getMTime()] = $fileinfo->getFilename();
        }
    }
    ksort($filenames);
    print_r($filenames);
    echo "\n";
    $i=0;
    if(sizeof($filenames)>1){
        foreach ($filenames as $file){
            if($i>0){
                echo $file."\n";
                unlink($directory."/".$file);
            }
            $i++;
        }
    }
?>
red_indian hotmail com 13-Apr-2010 12:36
Note that seek() and count() are not always available. At least not on ZendServer CE with PHP 5.2.12 on Mac OSX.

Simple test:

<?php

echo "php ".phpversion().": ";
$dirit = new DirectoryIterator( '.' );
var_dump( method_exists( $dirit, 'seek' ) );
var_dump( method_exists( $dirit, 'count' ) );

?>

You can implement them using existing methods:

seek(): rewind() and then $pos times next()
count(): clone iterator (to keep position), rewind() and then ++$count while ( valid() )
krystianmularczyk at gmail dot com 25-Jan-2009 03:31
Shows us all files and catalogues in directory except "." and "..".

<?php

foreach (new DirectoryIterator('../moodle') as $fileInfo) {
    if($fileInfo->isDot()) continue;
    echo $fileInfo->getFilename() . "<br>\n";
}

?>
David Lanstein 21-Jan-2009 12:50
DirectoryIterator::getBasename() has been also been available since 5.2.2, according to the changelog (not documented yet).  It takes a parameter $suffix, and is useful if, for instance, you use a naming convention for your files (e.g. ClassName.php). 

The following code uses this to add recursively All*Tests.php in any subdirectory off of tests/, basically, suites of suites.

<?php
// PHPUnit boilerplate code goes here

class AllTests {
    public static function main() {
        $parameters = array('verbose' => true);
        PHPUnit_TextUI_TestRunner::run(self::suite(), $parameters);
    }

    public static function suite() {
        $suite = new PHPUnit_Framework_TestSuite('AllMyTests'); // this must be something different than the class name, per PHPUnit
        $it = new AllTestsFilterIterator(
                  new RecursiveIteratorIterator(
                      new RecursiveDirectoryIterator(dirname(__FILE__) . '/tests')));

        for ($it->rewind(); $it->valid(); $it->next()) {
            require_once($it->current());
            $className = $it->current()->getBasename('.php');
            $suite->addTest($className::suite());
        }

        return $suite;
    }
}
?>

Also, the AllTestsFilterIterator above extends FilterIterator, and contains one method, accept():

<?php
class AllTestsFilterIterator extends FilterIterator {
    public function accept() {
        if (preg_match('/All.*Tests\.php/', $this->current())) {
            return true;
        } else {
            return false;
        }
    }
}
?>
Mark van Straten 09-Jul-2008 07:56
Implements Iterator so you can foreach() over the content of the given directory
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