<?php
unlink("../file.php)or die("error");
echo'ok';
?>
unlink
(PHP 4, PHP 5)
unlink — ファイルを削除する
説明
bool unlink
( string $filename
[, resource $context
] )
filename を削除します。 Unix C 言語の関数 unlink() と動作は同じです。
パラメータ
- filename
-
ファイルへのパス。
- context
-
注意: コンテキストのサポートは、 PHP 5.0.0 で追加されました。contexts の説明に関しては、 ストリーム を参照してください。
返り値
成功した場合に TRUE を、失敗した場合に FALSE を返します。
変更履歴
| バージョン | 説明 |
|---|---|
| 5.0.0 | PHP 5.0.0 以降、unlink()は いくつかのURL ラッパと共に使用することもできます。 unlink()をサポートするラッパのリストについては サポートされるプロトコル/ラッパーをご覧ください。 |
unlink
ayor ATTTTT ayor.biz
20-Dec-2007 11:02
20-Dec-2007 11:02
ggarciaa's post above has already one small error, closedir has to be used even if $DeleteMe is false
<?php
// ggarciaa at gmail dot com (04-July-2007 01:57)
// I needed to empty a directory, but keeping it
// so I slightly modified the contribution from
// stefano at takys dot it (28-Dec-2005 11:57)
// A short but powerfull recursive function
// that works also if the dirs contain hidden files
//
// $dir = the target directory
// $DeleteMe = if true delete also $dir, if false leave it alone
function SureRemoveDir($dir, $DeleteMe) {
if(!$dh = @opendir($dir)) return;
while (false !== ($obj = readdir($dh))) {
if($obj=='.' || $obj=='..') continue;
if (!@unlink($dir.'/'.$obj)) SureRemoveDir($dir.'/'.$obj, true);
}
closedir($dh);
if ($DeleteMe){
@rmdir($dir);
}
}
//SureRemoveDir('EmptyMe', false);
//SureRemoveDir('RemoveMe', true);
?>
james at NOSPAM dot telserco dot com
29-Sep-2007 11:10
29-Sep-2007 11:10
Cheap and dirty example for cleaning a directory of files so many seconds old.
function cleantmp() {
$seconds_old = 3600;
$directory = "/var/tmp";
if( !$dirhandle = @opendir($directory) )
return;
while( false !== ($filename = readdir($dirhandle)) ) {
if( $filename != "." && $filename != ".." ) {
$filename = $directory. "/". $filename;
if( @filemtime($filename) < (time()-$seconds_old) )
@unlink($filename);
}
}
}
rahulnvaidya at gmail dot com
03-Aug-2007 06:36
03-Aug-2007 06:36
ggarciaa's post above has one small error, it will ignore file and directory strings that are evaluated as false (ie. "0")
Fixed code is below (false !==)
<?php
// ggarciaa at gmail dot com (04-July-2007 01:57)
// I needed to empty a directory, but keeping it
// so I slightly modified the contribution from
// stefano at takys dot it (28-Dec-2005 11:57)
// A short but powerfull recursive function
// that works also if the dirs contain hidden files
//
// $dir = the target directory
// $DeleteMe = if true delete also $dir, if false leave it alone
function SureRemoveDir($dir, $DeleteMe) {
if(!$dh = @opendir($dir)) return;
while (false !== ($obj = readdir($dh))) {
if($obj=='.' || $obj=='..') continue;
if (!@unlink($dir.'/'.$obj)) SureRemoveDir($dir.'/'.$obj, true);
}
if ($DeleteMe){
closedir($dh);
@rmdir($dir);
}
}
//SureRemoveDir('EmptyMe', false);
//SureRemoveDir('RemoveMe', true);
?>
ggarciaa at gmail dot com
04-Jul-2007 03:00
04-Jul-2007 03:00
<?php
// ggarciaa at gmail dot com (04-July-2007 01:57)
// I needed to empty a directory, but keeping it
// so I slightly modified the contribution from
// stefano at takys dot it (28-Dec-2005 11:57)
// A short but powerfull recursive function
// that works also if the dirs contain hidden files
//
// $dir = the target directory
// $DeleteMe = if true delete also $dir, if false leave it alone
function SureRemoveDir($dir, $DeleteMe) {
if(!$dh = @opendir($dir)) return;
while (($obj = readdir($dh))) {
if($obj=='.' || $obj=='..') continue;
if (!@unlink($dir.'/'.$obj)) SureRemoveDir($dir.'/'.$obj, true);
}
if ($DeleteMe){
closedir($dh);
@rmdir($dir);
}
}
//SureRemoveDir('EmptyMe', false);
//SureRemoveDir('RemoveMe', true);
?>
torch at torchsdomain dot com
23-Nov-2006 05:27
23-Nov-2006 05:27
Here is simple function that will find and remove all files (except "." ones) that match the expression ($match, "*" as wildcard) under starting directory ($path) and all other directories under it.
function rfr($path,$match){
static $deld = 0, $dsize = 0;
$dirs = glob($path."*");
$files = glob($path.$match);
foreach($files as $file){
if(is_file($file)){
$dsize += filesize($file);
unlink($file);
$deld++;
}
}
foreach($dirs as $dir){
if(is_dir($dir)){
$dir = basename($dir) . "/";
rfr($path.$dir,$match);
}
}
return "$deld files deleted with a total size of $dsize bytes";
}
paul at pes-systems dot net
17-Aug-2006 02:27
17-Aug-2006 02:27
A work around for the Permission Denied problem.
I used ftp_connect() then ftp_delete() to erase files which unlink could not erase due to permision problems
bishop
06-Jun-2005 04:30
06-Jun-2005 04:30
<?php
/**
* rm() -- Vigorously erase files and directories.
*
* @param $fileglob mixed If string, must be a file name (foo.txt), glob pattern (*.txt), or directory name.
* If array, must be an array of file names, glob patterns, or directories.
*/
function rm($fileglob)
{
if (is_string($fileglob)) {
if (is_file($fileglob)) {
return unlink($fileglob);
} else if (is_dir($fileglob)) {
$ok = rm("$fileglob/*");
if (! $ok) {
return false;
}
return rmdir($fileglob);
} else {
$matching = glob($fileglob);
if ($matching === false) {
trigger_error(sprintf('No files match supplied glob %s', $fileglob), E_USER_WARNING);
return false;
}
$rcs = array_map('rm', $matching);
if (in_array(false, $rcs)) {
return false;
}
}
} else if (is_array($fileglob)) {
$rcs = array_map('rm', $fileglob);
if (in_array(false, $rcs)) {
return false;
}
} else {
trigger_error('Param #1 must be filename or glob pattern, or array of filenames or glob patterns', E_USER_ERROR);
return false;
}
return true;
}
?>
jchase at solidmark dot com
21-May-2005 02:05
21-May-2005 02:05
[Editor's note: A suggestion for a work-around was submitted by argistof at gmail dot com: You can use the recursive option (see man chmod) when chmodding, for instance 'chmod 777 directory/ -R'. Be aware though, this will change the permissions of all files and folders in the diectory.]
Just a note which you probably all know, but I didn't, and it might save another poor sap some unnecessary time:
I was doing unlink() and fopen() on a file and got a permission denied error, even after chmoding the file to 0777.
The folder that contains the file must ALSO have write permission. Took a headache to find this out.
Hope this helps someone :)
ashley at semantic dot org
02-Apr-2005 07:50
02-Apr-2005 07:50
Actually you should use "@unlink" rather than testing with file_exists. The former is atomic, whereas the latter can break if you can't guarantee only one process will try to delete a given file at a time.
dagski_AT_gmail_DOT_com
07-Feb-2005 03:19
07-Feb-2005 03:19
before you could unlink a file created which uses a handle e.g.,
$handle = sqlite('temp.db');
unset($handle); first befofe
unlink($handle);
to avoide permission denied error.
chris at vibenewmedia dot com
15-Sep-2004 02:54
15-Sep-2004 02:54
To delete all files of a particular extension, or infact, delete all with wildcard, a much simplar way is to use the glob function. Say I wanted to delete all jpgs .........
<?php
foreach (glob("*.jpg") as $filename) {
echo "$filename size " . filesize($filename) . "\n";
unlink($filename);
}
?>
pc AT newagelab DOT com DOT ua
09-Sep-2004 12:22
09-Sep-2004 12:22
To delete files using wildcards:
<?
function delfile($str)
{
foreach(glob($str) as $fn) {
unlink($fn);
}
}
?>