如何使用php获取主硬盘的序列号

Question

I was using:

$serial =  shell_exec('wmic DISKDRIVE GET SerialNumber 2>&1');

But with this I get all the hard disk serial number, I just want the serial number of the primary hard disk, in my case "c". I tried with this:

wmic path win32_diskdrive where deviceid="\\\\.\\PHYSICALDRIVE0" get serialnumber

It works fine in the windows console, but I tried to use it with exec like this:

$serial =  exec('wmic path win32_diskdrive where deviceid="\\\\.\\PHYSICALDRIVE0" get serialnumber');

But I just get ""

Answer 1

exec returns only the last line of output. Either give it its output argument, which it'll fill in with each line, or use shell_exec instead. Also double up on your backslashes so they're escaped properly. Eg:

exec('wmic path win32_diskdrive where deviceid="\\\\\\\\.\\\\PHYSICALDRIVE0" get serialnumber', $out);
var_dump($out);

or

$serial = shell_exec('wmic path win32_diskdrive where deviceid="\\\\\\\\.\\\\PHYSICALDRIVE0" get serialnumber');