Re: [PHP] exec and system do not work

On 8/26/2013 5:01 PM, Ethan Rosenberg, PhD wrote:
>
> On 08/26/2013 03:28 PM, Jim Giner wrote:
>> On 8/26/2013 2:41 PM, Ethan Rosenberg wrote:
>>>
>>> On 08/26/2013 11:36 AM, [email protected] wrote:
>>>>
>>>>
>>>>> Tamara Temple <[email protected]> hat am 26. August 2013 um
>>>>> 08:33
>>>>> geschrieben:
>>>>>
>>>>>
>>>>>
>>>>> On Aug 25, 2013, at 10:41 PM, Ethan Rosenberg
>>>>> <[email protected]> wrote:
>>>>>
>>>>>> Dear List -
>>>>>>
>>>>>> I'm lost on this one -
>>>>>>
>>>>>> This works -
>>>>>>
>>>>>> $out = system("ls -l ",$retvals);
>>>>>> printf("%s", $out);
>>>>>>
>>>>>> This does -
>>>>>>
>>>>>> echo exec("ls -l");
>>>>
>>>> Please show the output of the directory listing.
>>>> Please us "ls -la"
>>>>
>>>>>>
>>>>>> This does not -
>>>>>>
>>>>>> if( !file_exists("/var/www/orders.txt"));
>>>>>> {
>>>>>>     $out = system("touch /var/www/orders.txt", $ret);
>>>>
>>>> Maybe you don't have write permissions on the folder?
>>>>
>>>>>>     $out2 = system("chmod 766 /var/www/orders.txt", $ret);
>>>>>>     echo 'file2<br />';
>>>>>>     echo file_exists("/var/www/orders.txt");
>>>>>> }
>>>>>>
>>>>>> and this does not -
>>>>>>
>>>>>> if( !file_exists("/var/www/orders.txt"));
>>>>>> {
>>>>>>     exec("touch /var/www/orders.txt");
>>>>>>     exec("chmod 766 /var/www/orders.txt");
>>>>>>     echo 'file2<br />';
>>>>>>     echo file_exists("/var/www/orders.txt");
>>>>>> }
>>>>>>
>>>>>> Ethan
>>>>>>
>>>>>>
>>>>>
>>>>> When you say "does not work", can you show what is actually not
>>>>> working? I
>>>>> believe the exec and system functions are likely working just fine,
>>>>> but that
>>>>> the commands you've passed to them may not be.
>>>>>
>>>>>
>>>>>
>>>> --
>>>> Marco Behnke
>>>> Dipl. Informatiker (FH), SAE Audio Engineer Diploma
>>>> Zend Certified Engineer PHP 5.3
>>>>
>>>> Tel.: 0174 / 9722336
>>>> e-Mail: [email protected]
>>>>
>>>> Softwaretechnik Behnke
>>>> Heinrich-Heine-Str. 7D
>>>> 21218 Seevetal
>>>>
>>>> http://www.behnke.biz
>>>>
>>>
>>> Tamara -
>>>
>>>  > Please show the output of the directory listing.
>>>  > Please us "ls -la"
>>>
>>> echo exec('ls -la orders.txt');
>>>
>>> -rw-rw-rw- 1 ethan ethan 43 Aug 25 23:50 orders.txt
>>>
>>>
>>> Maybe you don't have write permissions on the folder?
>>>
>>> If I perform the touch and chmod from the command line, everything
>>> works.
>>>
>>>
>>>  >> When you say "does not work", can you show what is actually not
>>> working? I
>>>  >> believe the exec and system functions are likely working just fine,
>>> but that
>>>  >> the commands you've passed to them may not be.
>>>
>>> Here are my commands.
>>>
>>> if( !file_exists("/var/www/orders.txt"));
>>> {
>>> echo system("touch /var/www/orders.txt", $ret);
>>> echo system("chmod 766 /var/www/orders.txt", $ret);
>>> echo 'file2<br />';
>>> echo file_exists("/var/www/orders.txt");
>>> }
>>>
>>> If I now try a ls from the command line, the return is
>>>   cannot access /var/www/orders.txt: No such file or directory
>>>
>>> The ls -la  works because the file was created from the command line.
>>>
>>> TIA
>>>
>>> Ethan
>>>
>>>
>>>
>>>
>>>
>> Ethan - YOU'RE DOING IT AGAIN!!!
>>
>> Either you are not using error checking AGAIN!!
>> OR
>> You are showing us re-typed in code that YOU DIDN"T ACTUALLY RUN.
>>
>> I've told you multiple times that you need to do these two things and
>> you are back at it again.
>>
>> The sample php above has plain simple syntax errors that would keep it
>> from running, which error checking would tell you IF YOU RAN IT.
>>
>
> Jim -
>
> Thank you.
>
> I don't totally understand your reply ...
>
> but I will try to answer....
>
> The code is taken from an operating program.  My error checking is set
> to maximum sensitivity.
>
> If you would point out my syntax errors, I will fix them.
>
> TIA
>
> Ethan
>
you have semis after your if lines - therefore no logic gets executed.