(PHP 5)
The DirectoryIterator class provides a simple interface for viewing the contents of filesystem directories.
rogier at dsone dot nl (2012-08-16 18:23:44)
Beware of the behavior when using FilesystemIterator::UNIX_PATHS, it's not applied as you might expect.
I guess this flag is added especially for use on windows.
However, the path you construct the RecursiveDirectoryIterator or FilesystemIterator with will not be available as a unix path.
I can't say this is a bug, since most methods are just purely inherited from DirectoryIterator.
In my test, I'd expected a complete unix path. Unfortunately... not quite as expected:
<?php
// say $folder = C:\projects\lang
$flags = FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO | FilesystemIterator::SKIP_DOTS | FilesystemIterator::UNIX_PATHS;
$d_iterator = new RecursiveDirectoryIterator($folder, $flags);
echo $d_iterator->getPath();
?>
expected result: /projects/lang (or C:/projects/lang)
actual result: C:\projects\lang
Kunal Bhatia->kmasterzone@gmail dot com (2011-04-15 02:48:15)
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 (2010-04-13 00:36:18)
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 (2009-01-25 03:31:31)
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 (2009-01-21 12:50:27)
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 (2008-07-09 07:56:51)
Implements Iterator so you can foreach() over the content of the given directory