Description:
------------
code on a on windows 2000 service pack 4 system using php 4.3.4 command line with safe_mode=on, safe_mode_exec_dir, and exec function works successfully but fails using php 4.3.9RC2 command line. 

I did not test all versions since 4.3.4 but other php command line versions since 4.3.4 also fail. 

As you can see from example below I am using php.ini-dist and overriding with:

-d safe_mode=on 
-d safe_mode_gid=On 
-d safe_mode_exec_dir=c:\winnt\system32\

I also...
cd /d C:\WINNT\system32 

...and then run the command line php from the directory shown below:


Reproduce code:
---------------
C:\WINNT\system32>D:\PHP\php-4.3.9RC2\php -c D:\PHP\php-4.3.9RC2\php.ini-dist -d safe_mode=on -d safe_mode_gid=On -d safe_mode_exec_dir=c:\winnt\system32\ -r "exec('ping 127.0.0.1',$output,$error); var_dump($output); print ('error code returned: ' . $error);"


Expected result:
----------------
array(12) {
  [0]=>
  string(0) ""
  [1]=>
  string(40) "Pinging 127.0.0.1 with 32 bytes of data:"
  [2]=>
  string(0) ""
  [3]=>
  string(48) "Reply from 127.0.0.1: bytes=32 time<10ms TTL=128"
  [4]=>
  string(48) "Reply from 127.0.0.1: bytes=32 time<10ms TTL=128"
  [5]=>
  string(48) "Reply from 127.0.0.1: bytes=32 time<10ms TTL=128"
  [6]=>
  string(48) "Reply from 127.0.0.1: bytes=32 time<10ms TTL=128"
  [7]=>
  string(0) ""
  [8]=>
  string(30) "Ping statistics for 127.0.0.1:"
  [9]=>
  string(56) "    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),"
  [10]=>
  string(46) "Approximate round trip times in milli-seconds:"
  [11]=>
  string(49) "    Minimum = 0ms, Maximum =  0ms, Average =  0ms"
}
error code returned: 0


Actual result:
--------------
array(0) {
}
error code returned: 0