posix_mknod
(PHP 5 >= 5.1.0, PHP 7)
posix_mknod — Create a special or ordinary file (POSIX.1)
说明
posix_mknod (
string
$pathname ,
int $mode [,
int $major = 0 [,
int $minor = 0 ]] ) :
bool
Creates a special or ordinary file.
参数
-
pathname -
The file to create
-
mode -
This parameter is constructed by a bitwise OR between file type (one of the following constants:
POSIX_S_IFREG,POSIX_S_IFCHR,POSIX_S_IFBLK,POSIX_S_IFIFOorPOSIX_S_IFSOCK) and permissions. -
major -
The major device kernel identifier (required to pass when using
S_IFCHRorS_IFBLK). -
minor -
The minor device kernel identifier.
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE。
范例
Example #1 A posix_mknod() example
<?php
$file = '/tmp/tmpfile'; // file name
$type = POSIX_S_IFBLK; // file type
$permissions = 0777; // octal
$major = 1;
$minor = 8; // /dev/random
if (!posix_mknod($file, $type | $permissions, $major, $minor)) {
die('Error ' . posix_get_last_error() . ': ' . posix_strerror(posix_get_last_error()));
}
?>
