Abort script without closing bat

Question

A PHP script generates a file .bat and then runs the same, the problem is that I do not want my PHP script to be expecting such .bat finish running. I just want it to run, create and run the bat and then close without waiting for the bat to finish, how can I do that? I’ve tried adding > /dev/null 2>/dev/null & at the exec but it didn’t work.

Answer 1

If you’re on Windows, try using:

$WshShell = new COM("WScript.Shell");
$WshShell->Run('%COMSPEC% /C '.$file, 0, false);

If you don’t want to entrust in the %COMSPEC% specify which "interpreter" wishes, usually the %WINDIR%\system32\cmd.exe is the standard and it will be used.

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Test this:

my bat.

@ECHO off
TIMEOUT /T 5 /NOBREAK
START %WINDIR%\system32\calc.exe

This will make you wait 5 seconds and then open the calculator (%WINDIR%\system32\calc.exe).

my php.

<?php

$inicio = time();
$arquivo = getcwd().DIRECTORY_SEPARATOR.'meu.bat';

$WshShell = new COM("WScript.Shell");
$WshShell->Run('%COMSPEC% /C '.$arquivo, 0, false);

$fim = time();

echo 'Finalizado em '.($fim - $inicio).' segundos';

Upshot:

PHP will return the "Finished in 0 seconds" text, while CMD will open the calculator after 5 seconds.

The return of PHP is before the end of CMD execution. ;)

Another observation is that if PHP is running "on the same client machine" (as in localhost) no CMD window will be shown to the user, thus allowing to execute any command silently.

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It is necessary to enable the extension php_com_dotnet.dll in PHP.ini!