xattr_set
(PECL xattr:0.9-1.0)
xattr_set — Set an extended attribute
Popis
This function sets the value of an extended attribute of a file.
Rozšírené atribúty majú dve odlišné namespacey: user a root namespace. User namespace je dostupná pre všetkých užívateľov, zatiaľčo root namespace je dostupná iba pre užívateľa s rootovskými privilégiami. xattr ako default pracuje na user namespace, ale môžete to zmeniť pomocou argumentu flags .
Parametre
- filename
-
The file in which we set the attribute.
- name
-
The name of the extended attribute. This attribute will be created if it doesn't exist or replaced otherwise. You can change this behaviour by using the flags parameter.
- value
-
The value of the attribute.
- flags
-
Supported xattr flags XATTR_CREATE Function will fail if extended attribute already exists. XATTR_REPLACE Function will fail if extended attribute doesn't exist. XATTR_DONTFOLLOW Do not follow the symbolic link but operate on symbolic link itself. XATTR_ROOT Set attribute in root (trusted) namespace. Requires root privileges.
Vrátené hodnoty
Vracia TRUE pri úspechu alebe FALSE pri chybe.
Príklady
Example#1 Sets extended attributes on .wav file
<?php
$file = 'my_favourite_song.wav';
xattr_set($file, 'Artist', 'Someone');
xattr_set($file, 'My ranking', 'Good');
xattr_set($file, 'Listen count', '34');
/* ... other code ... */
printf("You've played this song %d times", xattr_get($file, 'Listen count'));
?>