Running PHP scripts as a different user

[Jason Barnett <jasbarne@xxxxxxxxxxx>]

It seems that several people have run into a problem where PHP did not 
have permission to access certain folders / files in Windows.  I have 
two solutions that I have tried on WinXP, if others could verify if this 
works on other Windows platforms this would be helpful.



Solution #1:
Use the function CACLS to grant PHP's user access to the file / folder 
and then return permissions to normal when finished.  To do this 
manually use
1. Start -> Run -> cmd
2. "CACLS somefile.ext /E /G youruser:F "
3. "c:\php5\php.exe -f yourphpfile.php"
3. "CACLS somefile.ext /E /D youruser"

Since this is a shell command, I thought we could also do this from a 
php script.  Unfortunately, I couldn't get it to work?  Here's what I 
tried for those that want to give it a shot:

function switchUserExec($absfile, $user = null, $permission = 'F', $php 
= 'C:/php5/php.exe') {
  $absfile = escapeshellarg($absfile);
  $user = escapeshellarg($user);
  $permission = escapeshellarg($permission);
  $php_cli = escapeshellarg($php_cli);
  $com = getenv('ComSpec').' /C ';

  exec("$com CACLS $absfile /E /G $user:$permission");
  exec("$com $php -f $absfile", $result);
  exec("$com CACLS $absfile /E /D $user");

  return $result;
}





Solution #2 (suphp.bat):

@ECHO OFF
REM  This is an example batch file for Windows systems running php.
REM  It should enable you to run PHP from the command line as any user
REM  you specify.  The main reason I made this was to temporarily give
REM  PHP permission to access files of a specific user.  Change these
REM  lines to match the user and path info for your system

SET "PHP=C:\php5\php-win.exe"
SET "USER=someuser"
SET "PHP_FILE=C:\path\to\somescript.php"

REM  You *can* add the switch /savecred to save the password
REM  and avoid retyping each time, not sure how secure this is?
RUNAS /user:%USER% "%PHP% -f %PHP_FILE%"
@ECHO ON

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