Re: Problems with exec() on windows

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On Thu, Mar 19, 2009 at 9:25 AM, haliphax <haliphax@xxxxxxxxx> wrote:
> On Thu, Mar 19, 2009 at 9:19 AM, Kyohere Luke <pr0f3t@xxxxxxxxx> wrote:
>> Hi,
>> I'm trying to use exec to call gammu.exe and send sms on windows XP.
>>
>> This works from commandline:
>>
>> C:\path\to\gammu.exe 1 --sendsms EMS 200 -text "test1 test2"
>>
>> But if I run it through php like this:
>>
>> $command = "\"C:\path\to\gammu.exe\" --sendsms EMS 200 -text \"test1
>> test2\"".;
>> @exec($command, $response, $retval);
>>
>> This always fails, returns 1 and the response is empty.
>>
>> If the last argument is a string with no spaces, and the double quotes were
>> omitted, it works perfectly.
>>
>> If the double quotes are added around the string with no spaces, it fails
>> again, which makes me believe that the problem is with the double quotes.
>>
>> I've used procmon and it shows that when the double quotes are added around
>> the last argument, gammu.exe is not even called at all.
>>
>> Problem is that the double quotes are required by gammu to send an sms with
>> spaces in it.
>
> I'm not sure if it will help, but the escapeshellarg() function looks
> like it might handle all that tricky slash-and-quote-adding for you:
>
> http://php.net/escapeshellarg
>
> Other than that, perhaps proc_open() would do what you need it to by
> completely separating the command's arguments from itself.
>
> http://php.net/proc_open

Also--if you're only concerned with a one-way process tunnel (read or
write, but not both) then maybe popen() instead of proc_open() would
be preferable for overhead/speed. Of course, that's if either of them
do what you're looking for.


-- 
// Todd

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