batch processing - taskkill windows command prompt not killing all processes php -

i running windows 7 64bit wamp 2 server.

i running program batch script using windows com component ex:

c:\wamp\bin\php\php5.3.13\php.exe c:\wamp\www\test\command.php $wshshell = new com("wscript.shell"); $oexec = $wshshell->run($command, 7, false); 

now when find how many "cmd.exe" programs running, list me processes using below command:

tasklist /svc /fi "imagename eq cmd.exe" 

and kill them below command using php script:

$output = shell_exec('taskkill /f /im "cmd.exe"'); 

here, happens is, not cmd.exe windows getting closed.

what might error in above code? some windows closed, while remains open executing command.

please help.

found solution [though open better suggestions]

first needs check , kill if php tasks exists, command prompt kill :

// first list out `php.exe` tasks running $output = shell_exec('tasklist /svc /fi "imagename eq php.exe"'); print_r($output); echo "<br> ------------------------------------ <br>";  // first list out `cmd.exe` tasks running $output = shell_exec('tasklist /svc /fi "imagename eq cmd.exe"'); print_r($output); echo "<br> ------------------------------------ <br>";  // kills php.exe tasks $php_output = shell_exec('taskkill /f /im "php.exe"'); print_r($output); echo "<br> ------------------------------------ <br>";  // kills cmd.exe tasks $cmd_output = shell_exec('taskkill /f /im "cmd.exe"'); print_r($output); echo "<br> ------------------------------------ <br>";  die(ucfirst('all tasks killed')); 

hope helps !