PHP.nl

fileperms

fileperms

Gets file permissions

 **fileperms** string $filename

Gets permissions for the given file.

filenamePath to the file.

Returns the file's permissions as a numeric mode. Lower bits of this mode are the same as the permissions expected by , however on most platforms the return value will also include information on the type of file given as . The examples below demonstrate how to test the return value for specific permissions and file types on POSIX systems, including Linux and macOS. chmod``filename

For local files, the specific return value is that of the member of the structure returned by the C library's function. Exactly which bits are set can vary from platform to platform, and looking up your specific platform's documentation is recommended if parsing the non-permission bits of the return value is required. st_mode``stat

Returns false on failure.

Voorbeeld: Display permissions as an octal value

<?php
echo substr(sprintf('%o', fileperms('/tmp')), -4);
echo substr(sprintf('%o', fileperms('/etc/passwd')), -4);
?>

1777
0644

Voorbeeld: Display full permissions

<?php
$perms = fileperms('/etc/passwd');

switch ($perms & 0xF000) {
    case 0xC000: // socket
        $info = 's';
        break;
    case 0xA000: // symbolic link
        $info = 'l';
        break;
    case 0x8000: // regular
        $info = 'r';
        break;
    case 0x6000: // block special
        $info = 'b';
        break;
    case 0x4000: // directory
        $info = 'd';
        break;
    case 0x2000: // character special
        $info = 'c';
        break;
    case 0x1000: // FIFO pipe
        $info = 'p';
        break;
    default: // unknown
        $info = 'u';
}

// Owner
$info .= (($perms & 0x0100) ? 'r' : '-');
$info .= (($perms & 0x0080) ? 'w' : '-');
$info .= (($perms & 0x0040) ?
            (($perms & 0x0800) ? 's' : 'x' ) :
            (($perms & 0x0800) ? 'S' : '-'));

// Group
$info .= (($perms & 0x0020) ? 'r' : '-');
$info .= (($perms & 0x0010) ? 'w' : '-');
$info .= (($perms & 0x0008) ?
            (($perms & 0x0400) ? 's' : 'x' ) :
            (($perms & 0x0400) ? 'S' : '-'));

// World
$info .= (($perms & 0x0004) ? 'r' : '-');
$info .= (($perms & 0x0002) ? 'w' : '-');
$info .= (($perms & 0x0001) ?
            (($perms & 0x0200) ? 't' : 'x' ) :
            (($perms & 0x0200) ? 'T' : '-'));

echo $info;
?>

-rw-r--r--

chmod``is_readable``stat

Vorige ← fileowner Volgende filesize →

Documentatie