(PHP 5 >= 5.1.0, PHP 7, PHP 8)
posix_mknod — Create a special or ordinary file (POSIX.1)
$filename
, int $flags
, int $major = 0
, int $minor = 0
) : boolCreates a special or ordinary file.
filenameThe file to create
flags
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_IFIFO or
POSIX_S_IFSOCK) and permissions.
major
The major device kernel identifier (required to pass when using
S_IFCHR or S_IFBLK).
minorThe minor device kernel identifier.
成功时返回 true， 或者在失败时返回 false。
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()));
}
?>