Unlink pada PHP yaitu berfungsi untuk menghilangkan atau menghapus sebuah file dalam PHP , biasanya hal ini dipakai pada penghapusan sebuah data di php , kita menghapus data dengan php tetapi data tersebut tidak terhapus pada file di dalam folder , maka fungsi Unlink ini yang harus digunakan untuk mengatasi hal tersebut , karena data yang telah kita simpan harus tersimpan di folder dan sebalik nya data yang kita hapus harus terhapus
pula dalam folder , caranya cukup mudah , teman teman bisa ikuti langkah langkah dibawah ini : 1. Teman teman harus memiliki sebuah project CRUD dengan fitur upload file , disini saya akan menjelaskan to the point nya saja 2. Jika teman teman sudah mempunyai file nya coba teman teman sisipkan code Unlink seperti di bawah ini :
oke untuk $id di atas diambil dari GET yang di ambil dari  , jadi fungsinya untuk mendapatkan ID , untuk fungsi Unlink yaitu isinya hanya nama folder dan nama file , seperti di atas saya mengambil nama file nya berdasarkan pilihan data yang memiliki ID yang di ambil sesuai yang kita pilih
semoga bermanfaat dan selamat mencoba 😀
[PHP 4, PHP 5, PHP 7, PHP 8]
unlink — Deletes a file
Description
unlink[string $filename, ?resource $context = null]: bool
Parameters
filenamePath to the file.
If the file is a symlink, the symlink will be deleted. On Windows, to delete a symlink to a directory, rmdir[] has to be used instead.
contextA context stream resource.
Return Values
Returns true on success or false on failure.
Changelog
| 7.3.0 | On Windows, it is now possible to unlink[] files with handles in use, while formerly that would fail. However, it is still not possible to re-create the unlinked file, until all handles to it have been closed. |
Examples
Example #1 Basic unlink[] usage
See Also
- rmdir[] - Removes directory
anagai at yahoo dot com ¶
10 years ago
This will delete all files in a directory matching a pattern in one line of code.
dexen dot devries at gmail dot com ¶
11 years ago
Deleted a large file but seeing no increase in free space or decrease of disk usage? Using UNIX or other POSIX OS?
The unlink[] is not about removing file, it's about removing a file name. The manpage says: ``unlink - delete a name and possibly the file it refers to''.
Most of the time a file has just one name -- removing it will also remove [free, deallocate] the `body' of file [with one caveat, see below]. That's the simple, usual case.
However, it's perfectly fine for a file to have several names [see the link[] function], in the same or different directories. All the names will refer to the file body and `keep it alive', so to say. Only when all the names are removed, the body of file actually is freed.
The caveat:
A file's body may *also* be `kept alive' [still using diskspace] by a process holding the file open. The body will not be deallocated [will not free disk space] as long as the process holds it open. In fact, there's a fancy way of resurrecting a file removed by a mistake but still held open by a process...
deen804 at gmail dot com ¶
8 years ago
unlink[$fileName]; failed for me .
Then i tried using the realpath[$fileName] function as
unlink[realpath[$fileName]]; it worked
just posting it , in case if any one finds it useful .
federico at poisonfx dot com ¶
11 years ago
Here the simplest way to delete files with mask
chris at vibenewmedia dot com ¶
17 years ago
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 .........
PD ¶
14 years ago
I have been working on some little tryout where a backup file was created before modifying the main textfile. Then when an error is thrown, the main file will be deleted [unlinked] and the backup file is returned instead.
Though, I have been breaking my head for about an hour on why I couldn't get my persmissions right to unlink the main file.
Finally I knew what was wrong: because I was working on the file and hadn't yet closed the file, it was still in use and ofcourse couldn't be deleted :]
So I thought of mentoining this here, to avoid others of making the same mistake: