CachingIterator::valid
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++;
}
}
?>
La clase DirectoryIterator
Introducción
La clase DirectoryIterator proporciona un simple interfaz para ver el contenido de los directorios del sistema de archivos.
Clases sinopsis
/* Métodos */
__construct
( string $path
)
}Table of Contents
- DirectoryIterator::__construct — Constructs a new directory iterator from a path
- DirectoryIterator::current — Return the current DirectoryIterator item.
- DirectoryIterator::getATime — Get last access time of the current DirectoryIterator item
- DirectoryIterator::getBasename — Get base name of current DirectoryIterator item.
- DirectoryIterator::getCTime — Get inode change time of the current DirectoryIterator item
- DirectoryIterator::getFilename — Return file name of current DirectoryIterator item.
- DirectoryIterator::getGroup — Get group for the current DirectoryIterator item
- DirectoryIterator::getInode — Get inode for the current DirectoryIterator item
- DirectoryIterator::getMTime — Get last modification time of current DirectoryIterator item
- DirectoryIterator::getOwner — Get owner of current DirectoryIterator item
- DirectoryIterator::getPath — Get path of current Iterator item without filename
- DirectoryIterator::getPathname — Return path and file name of current DirectoryIterator item
- DirectoryIterator::getPerms — Get the permissions of current DirectoryIterator item
- DirectoryIterator::getSize — Get size of current DirectoryIterator item
- 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::isExecutable — Determine if current DirectoryIterator item is executable
- DirectoryIterator::isFile — Determine if current DirectoryIterator item is a regular file
- DirectoryIterator::isLink — Determine if current DirectoryIterator item is a symbolic link
- DirectoryIterator::isReadable — Determine if current DirectoryIterator item can be read
- DirectoryIterator::isWritable — Determine if current DirectoryIterator item can be written to
- DirectoryIterator::key — Return the key for the current DirectoryIterator item
- DirectoryIterator::next — Move forward to next DirectoryIterator item
- DirectoryIterator::rewind — Rewind the DirectoryIterator back to the start
- DirectoryIterator::seek — Seek to a DirectoryIterator item
- DirectoryIterator::__toString — Get file name as a string
- DirectoryIterator::valid — Check whether current DirectoryIterator position is a valid file
add a note
User Contributed Notes
DirectoryIterator
Kunal Bhatia->kmasterzone@gmail dot com
15-Apr-2011 09:48
red_indian hotmail com
13-Apr-2010 07:36
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 11:31
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 08:50
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 02:56
Implements Iterator so you can foreach() over the content of the given directory