Php menghapus file di server

Saat file Anda berada di direktori lain, Anda perlu menampilkan jalur file dari direktori saat ini

Misalkan Anda memiliki struktur pohon berikut untuk file Anda

.
├── assets
│   └── image.jpg
├── index.php
├── three.txt
└── two.txt

Untuk menghapus file

<?php
unlink('one.txt');
?>

<?php
unlink('assets/image.jpg');
?>

Ketika file tidak ditemukan untuk dihapus, maka PHP akan mengeluarkan peringatan seperti yang ditunjukkan di bawah ini

PHP Warning:  unlink(assets/image.jpg):
No such file or directory in /DEV/assets/index.php on line 2

Unlink tidak akan menyebabkan error ketika tidak bisa menghapus file

Anda juga dapat memeriksa apakah pemutusan tautan berhasil menggunakan operator bang

<?php
unlink('one.txt');
?>

<?php
if (!unlink('assets/image.jpg')) {
  echo "The file can't be deleted";
} else {
  echo "The file has been deleted successfully";
}
?>

Selanjutnya, mari kita lihat bagaimana Anda dapat menghapus banyak file menggunakan fungsi unlink()

Hapus banyak file menggunakan array_map

Terkadang, Anda mungkin ingin menghapus banyak file yang cocok dengan pola tertentu

Daripada berulang kali memanggil fungsi unlink()_, Anda dapat menggunakan tip ini dari yang memungkinkan Anda melakukan penghapusan rekursif menggunakan fungsi unlink()

<?php
array_map('unlink', glob("*.txt"));
?>

Kode di atas akan menghapus semua file

.
├── assets
│   └── image.jpg
├── index.php
├── three.txt
└── two.txt

❮ Referensi PHP FTP

Contoh

Hapus file di server FTP

// sambungkan dan masuk ke server FTP
$ftp_server = "ftp. contoh. com";
$ftp_conn = ftp_connect($ftp_server) or die("Tidak dapat terhubung ke $ftp_server");
$login = ftp_login($ftp_conn, $ftp_username, $ftp_userpass);

$file = "php/tes. txt";

// coba hapus file
jika (ftp_delete($ftp_conn, $file))
{
echo "$file dihapus";
}
kalau tidak
{
echo "Tidak dapat menghapus $file";
}

// tutup koneksi
ftp_close($ftp_conn);
?>

Definisi dan Penggunaan

Fungsi ftp_delete() menghapus file di server FTP

Sintaksis

ftp_hapus(ftp_conn, berkas);

Nilai Parameter

Detail Teknis

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...

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