PHP :: Using Passthru(), Exec(), System() Etc.

Passthru() Or Exec()
I am trying to make a website where I can restart an application. I can make it terminate the app but it hangs when trying to restart it. the website calls the function this way:

#####################
PHP
#####################
<?php
ifÂ (isset($_POST["kill_server"])){
Â Â kill_server();
Â Â echoÂ "<imgÂ src=./images/ok.gif>Â ElÂ serverÂ estaÂ siendoÂ apagado.Â PorÂ favorÂ espereÂ 1Â minuto!";
}Â elseifÂ (isset($_POST["init_server"])){
Â Â init_server();
Â Â echoÂ "<imgÂ src=./images/ok.gif>Â ElÂ serverÂ estaÂ siendoÂ iniciado.Â PorÂ favorÂ espereÂ 3Â minutos!";
}
?>.

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Cannot Get Exec() Or Passthru() To Work?
I cannnot seem to get exec() or passthru() to execute a perl script;
here's the code snippet:

if ($debug) {
echo "username1 = ".$username1." ";
echo "dbname = ".$dbname." ";
echo "SESSION[dbname] = ".$_SESSION['dbname']." ";
echo "Output file = ".$outputfile." ";
echo "Project name = ".$projectname." ";
echo "Study name = ".$studyname." ";
echo "The command to be run is: ".$cmd." ";
}

// Run the command!
exec($cmd,$myoutput,$rtnvar);
echo "rtnvar = ".$rtnvar." ";

foreach ($myoutput as $line) {
echo $line." ";
}

Which produces the results:

username1 = rick
dbname = cgb_lab_data
SESSION[dbname] = cgb_lab_data
Output file = myoutput
Project name = IBS11_1103
Study name = IBS 11
The command to be run is: perl
/home/caseyr/projects/LIMSScripts/3100DataIO/mk3100plt.pl -n 'IBS 11'
-b 1103 -o myoutput -p IBS11_1103 -i S
rtnvar = 13

The command looks perfectly legit, and will run at the command line if
I cut and paste it.

I do not understand the return value of 13.

I can get a simple perl script that takes no arguments to run ok; so I
think this has something to do with the arguments. I've used
escapeshellarg() to no avail. I've always tried the same with system()
and the backtick operator --

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Why I Can Use Exec() And Passthru() To Execute Lynx
i have try using exec("/bin/lynx -source http://URL") or passthru("/bin/lynx -source http://URL") but also not success and i have put the lynx inside the bin folder already but also cannot, why?

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Exec, Passthru Disabled So How To Call C++ .exe File?
I am at my wit's end trying to get information out of Streamline.net's
support dept about my problem. They reply quickly enough, but seem to try
and give out the least possible amount of info each time. The transcript so
far is reproduced for your amusement below.

To summarise:

I've put up a Sudoku-solving program called Sudoku.exe. I want to call it in
a php script to solve a puzzle and output the solution. It works fine with
Apache/php on my own machine, but it seems Streamline.net disable exec,
passthru etc. They eventually say, cryptically: ' CGI executables are
supported, however this is very different from executing a program from
within a PHP script'. So how would I call my Sudoko.exe file?

The 'dialog':

My last question seems to have been 'fixed' before being answered, so I'll
have another go.
I'm trying to call an .exe file on the server but get an 'unable to fork'
error message. I have Apache/php installed locally and it works fine. Do you
have to turn on 'cmd.exe' permissions or something? Try it yourself at:

Warning: passthru(): Unable to fork [Sudoku.exe (argument...)] in (.php
file...)
It's the same with exec() as well.

We do not support passthru or exec functions.

So how would I call my Sudoku.exe program from a php script?

I do not want 'scripting help', I just want to use some of the functions
that you offer as a host and which I have paid for.
As I have said what I am trying to do works perfectly on my machine, so it
must be a question of something you have to enable your end. What do you
mean you don't support passthru or exec? They are both standard php
commands.
.

You asked "how would I call my Sudoku.exe program from a php script?"
clearly this is asking us how you can use scripting?

Certain functions are disabled in PHP for security reasons.

Which functions are 'disabled in PHP for security reasons' ?

You can find this out with the inbuilt php function phpinfo()

Could you tell me where on the page that phpinfo() produces these functions
are listed? For example, passthru() does not appear to be on the page.
.

search for "disable_functions" on that page.

disable_functions lists 'no value'. So again, could you tell me where I can
find the list of standard php functions which you have disabled?
Please can you provide a link to your phpinfo file so we can investigate
this further.
We had previously checked this on a linux server, which showed the functions
that have been disabled. We've passed this on to an engineer to investigate
further.

For your information the following are disabled:

shell_exec,exec,system,passthru,popen

Your knowledge base says:
Q. Are CGI (Common Gateway Interface) executables supported?

A. Yes these are supported on either the Windows and Linux servers

But you are telling me that the only php functions which can call my
executable are disabled. Will you clarify once and for all if I can call my
exe file or not. I AM NOT ASKING FOR SCRIPTING HELP, I have books about
that. I just want to know if I can do ON YOUR SERVER what you say I can do,
and if not why not.

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Passthru & System Has Beed Disabled !
How to use passthru() and system() by ini_set() or under safe mode ?

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Format Result Text Using Passthru Of System
I tried to use the Passthru and System function to resolve some whois
information.

echo passthru('whois 62.69.168.12') .' '
-or-
$whois = system('whois 62.69.168.12', $retval);

It works fine, but all the result text is at one line. How can i format this
output correctly ?

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PHP System() And Exec()
Background: I am trying to execute a binary on the server located in the current directory where the php script is being run. The server is a linux (debian based). I am having trouble getting php to execute the binary properly, below is my code. Code:

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System() And Exec()
If you start a program using this function and want to leave it running in the background, you have to make sure that the output of that program is redirected to a file or some other output stream or else PHP will hang until the execution of the program ends.

I have tried numerous time by redirecting to a file or other stream to free up a php web page that called a perl script for example, but the php script always hangs...has anyone had any luck freeing up a calling php script from a process, or program that it launched in the background? Code:

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Exec(), System()
I write very, very simple script who call external program. The script is run on Linux Slackware, Apache/1.3.37 (Unix) mod_ssl/2.8.28 OpenSSL/0.9.8b PHP/4.4.4 here is my script:

<?php
echo exec('ls');
?>
this work properly.

but if i write:

<?php
echo exec('xine'); //xine is a multimedia player
?>

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Bug In System And Exec Commands
If PHP is running via a web server, and mutiple system
calls are made within the script to another script,
hundreds of processes are created. Here is an example:

Script 1:
<?php
for ($i=1; $i<=5; $i++) {
system("php script2.php");
}
?>

Script 2:
<?php
exit;
?>

The effect is the same (and more difficult to stop) when
the system calls are made in the background. e.g.

system("php script2.php >>/dev/null 2>>/dev/null &");
system("php script2.php >/dev/null 2>&1");

I have even tried calling a shell script, which in turn
calls the second PHP script (both in the background), but
it still causes lots of processes.

The "exec" command is also affected.

At first, I thought this was a problem with either Zeus web
server of Fast CGI, but I have since tried it with Apache
and normal CGI with the same effect.

Does anyone have any idea why this happens and whether there is any way to prevent it? I have posted a bug report to bugs.php.net (ID 14997), but so far to no avail.

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System() Or Exec() And Permissions
I'm trying to run a command (mogrify) that requires that I'm logged in as root, or at least I think this is the case. How can I do this?

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Exec() And System() Problems
I am trying to use php's exec() or system() to execute a shell script that I wrote.

exec and system() work fine with a simple command like ls, but nothing happens when I point it at the shell script.

The shell script works fine from my shell login. Can't figure out what tho problem is. Is php just incapable of running shell scripts?

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System/shell/exec/etc
I've got PHP 5.1.6, Apache 2.2.2, on Fedora 5. Everything is great except that when I use an of the external launching commands, persistent apps dont stay open. I have a simple shell script set up to load an app, and I have it write a PID file. Immediately after calling exec (milliseconds later) the PID is alive. However, within a few more milliseconds it seems to close.

I've made sure that the apache uid/gid have full access to the script and the apps it calls. When sudo'ing manualy in a shell with the apache uid, the script works flawlessly and loads the program, and stays open, as it should. I've verified that the app loads under the uid 'apache' with ps. When running it through PHP, it seems to close almost immediately after succeeding.

Is there some fundamental issue with how this works that I'm missing? I can't seem to get any real errors out of php, apache, or even the shell when redirected to a file. Should I try PHP4? Is PHP5 buggy with this kind of thing? I even tried running 'at' to schedule the script (so that it'd be invoked by at instead of the shell itself) but that failed, silently, as well.

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Exec(), System() And Win 2003
I have searched high and low for the past 2 days for an answer to my problem. I have found a few references, but nothing has helped me. My problem is this: I am trying to ping a remote server from a PHP script in IE 6.0. When I load the page, the cmd.exe loads on the server and takes up all my CPU. I have to manually stop the process for it to go away.

My setup is this:
Windows 2003 Server
PHP 5.0.1

I have tried
- giving my system32cmd.exe full IUSR_%machinename% rights
- moved the cmd.exe to the script folder, to the PHP folder

And about a million other things that I can't remember =(. I have tried multiple functions, written in mulitple ways and the outcome is always the same. when the cmd.exe is opened it hangs on the 2003 server.

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Use Exec() In PHP 5.2 On A Windows XP Pro System
I'm trying to use exec() in PHP 5.2 on a Windows XP Pro system. What I'm trying to do is use it to tell an already running program what to.

For example:
X:pathprogram.exe /something
or
X:pathprogram.exe /something_else

If I do the command through the command line, it works, but so far I have been unsuccessful in PHP. Usually it PHP just hangs, and give no error message, and does nothing to the program.

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Problem Using System/exec Function.
I am faced with strange problem. Basically I want to make a script which would take mysql back up for me. I have come up with following. [ basically code is borrowed from some other place ]
PHP Code:

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Using System/exec, How To Backup Database?
system("mysqldump --opt myDatabase > backup.sql");

here are my problems,

i don't think it works on the webserver. next, where exactly the file, backup.sql be place if it does succeed.

i believe we just can't execute commands on the webserver can we?

i also tried using the sql query BACKUP TABLE ... TO .. but i'm guessing the problem lies with the TO... how do i know what directory shall i place it therE?

for instance, my pages are placed in,

home/myname/public_html/...

i tried to put
home/myname/public_html/backup in the TO but nothing happens.

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Exec(), System(), Shell_exec(), Etc + Nmap
i'm trying to create a script that executes nmap from my server, then displays the output.

i've tried:

$output = passthru('nmap -v -A'.' $ip');
$output = shell_exec('nmap -v -A'.' $ip');
system('nmap -v -A'.' $ip');

the problem i'm having is that using the above methods i only get the first line of output, ie.

Starting Nmap 4.20 ( http://insecure.org ) at 2007-08-31 21:46 CST

and nothing else. i've managed to find a way around it by sending the nmap output to a textfile, the using file_get_contents() to pull the data back in:

exec('nmap -v -A '.$ip.' > /usr/local/www/apache22/data/nmap/'.$ip.'.html');
$file = "/usr/local/www/apache22/data/nmap/$ip.html";
$result = file_get_contents($file);
echo "(pre)$result(/pre)";

that works perfectly, but i'd rather not be writing anything to the drive. i guess the problem might be that nmap takes about 5-10 seconds to do its scan, and for some reason php doesn't want to wait that long, i really have no idea. can it be made to work without needing to write to files?

and for the curious minds, i'm not doing anything dodgy, i just wanted an online tool i could access from any computer to test networks i support .

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System/exec Not Working In Browser
In two files, and I serve foo.php then I notice If I use commandline execution i.e. php foo.php then foo.txt is touched/created all right. i.e. system command is executed as expectedBut If I use browser then I notice that the shell command in config.php is *not* executedAny ideas as to why this might be happening? Code:

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Command Window - Exec/system
I'm in the process of developing a script in Windows where I need to use exec/system. Whenever I execute either, Windows spawns a command window which automatically sappears. Is there a clean way to force Windows to NOT display the command window?

I've seen this discussed a few times previously, but, none of the
solutions seem to be working (tried both exec and system; tried using
cmd /c, tried using start /B, etc.)

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Exec And System Commands Blocked By Host
I've got this code, its the simpliest example I could make. It works perfectly on my windows xp/apache/php box, but doesn't do anything on a commercial website host. The actual code should use gzip to compress a folder but that doesn't work either.

Anyone know the reason why they would be blocking these commands? I suspect the problems with commonly used php apps like phpBB to be the real reason.

<?
exec("ping 127.0.0.1 > test.txt") or die();
// get contents of a file into a string
$filename = "test.txt";
$fd = fopen ($filename, "r");
$contents = fread ($fd, filesize ($filename));

fclose ($fd);

echo $contents;

?>

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Alternates To System() And Exec() In Order To Use ImageMagik?
My Web host apepars to not allow exec() and system(), as a line in my script:

system("convert -scale 100x100 $uploadfile $toimage");

gives the error:

"Warning: system() has been disabled for security reasons"

Is there some other way to use ImageMagik (or is it GhostScript?)'s
"convert" command in PHP that may be safer and generally allowed by Web
hosts?

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Exec - Create An Executable That Return The System Drives
I need some help about exec command. I have create an executable that return the System Drives. It is based on DOS and does not need any parameter.

I have create my php script that executes the executable i've create and the source code is the following: ...

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Exec(curl --proxy ....) Or Passthru(curl --proxy....)
I am trying to do some proxy stuff , I am able to retrieve the page but not able to catch the return , what I am doing is

passthru("curl --proxy 195.115.142.120:80 xyz.com");

or

exec("curl --proxy 195.115.142.120:80 xyz.com");

It throws the results (displays the xyz.com) to my page but I want to catch that in a variable like

$variable=passthru("curl --proxy 195.115.142.120:80 xyz.com");
or
$variable=(some php fucntion)("curl --proxy 195.115.142.120:80 xyz.com");

echo $variable ,

should give me the page.

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Running An .exe File Using Exec() Or System(), Unable To Fork Error
I have a problem with running an .exe file using exec() or system() I have downloaded a file called ffmpeg.exe for converting movie clips. I can use the program thourg the command line in windows (cmd), but I'm not able to have PHP run the file. First PHP gave be an "unable to fork" error. But then I gave users access to the cmd.exe file and solved that problem. So now is no problem running for example exec("dir");

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System(), Exec(), Shell_exec(), But "Permission Denied"
I want to execute the php script via web server to run linux command. I try to use system(), exec(), shell_exec(), but the system show me "Permission Denied". i have set the file permission by using chmod 777 file.php .

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Warning: Ftp_exec() [function.ftp-exec]: SITE EXEC Is An Unknown Extension
This is kind of a part II to a question a posted earlier about exec and shell_exec not working.

I'm trying to use ftp_exec to execute some simple command:

$conn_id = ftp_connect("$server") or die ("Cannot initiate connection to host");
ftp_login($conn_id, "$username", "$userpass") or die("Cannot login");
$command = 'cd..'
if (ftp_exec($conn_id, $command)) {
echo "$command executed successfully";
} else {
echo "could not execute $command";
}
ftp_close($conn_id);

I'm getting the following error:

Warning: ftp_exec() [function.ftp-exec]: SITE EXEC is an unknown extension in /home/urieilam/public_html/work/video/test1.1.php on line 21
could not execute cd..

Have tried other commands as well, get the same. Could this be a security issue or something to do with p Safe Mode? I don't know much about commands, shell, etc..

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Passthru()
Anyone know why i'm getting an "unable to fork [datafile] " error using the passthru function. Tried it on txt files and grafix, and both types give error.

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Passthru
Warning: passthru() has been disabled for security reasons in ...

how can I change my php.ini file (php4/apache/winxp server) to enable this
function? How can I best work around if I can't use this function?

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Help With Passthru And Wmic...
I'm trying to get this to work.

<?php
echo passthru('wmic cpu get loadpercentage');
?>

and just output to the browser... It looks like cmd.exe hangs when it
tries to execute the command. The IUSR_ account has access to both the
cmd.exe and wmic files. I have also tried copying the wmic files to
the C:php dir, and to the directory the web app is running from.

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Variables In Passthru
I am trying to print the website statistics for certain websites to a PDF file using htmldoc.

$pdf = passthru("/usr/bin/htmldoc -t pdf --quiet --jpeg --webpage http://$username:$pass@$domain:2082/awstats.pl?year=$year&output=main&config=$domain&lang=en&month=$month");

The issue is that none of the variables after $year work the $domain and $month variable.

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Passthru Output
I need to run a linux command via php and display the output in a browser.

<?
passthru('/home/user/qmHandle -R > output');
header("location:./output");
?>

The above code is supposed to run qmHandle and write the output to a file "output". It works fine, but it only writes the last line to "output". However, when I run qmHandle directly at a terminal, it outputs several hundred lines to screen.

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Safe Mode And Passthru
I seem to be getting some inconsistent results when using passthru()
in safe mode. They appear to be related to the fact that passthru
should treat all command arguments as one single argument when safe
mode is on. Everything works just fine on my MacOS X webserver (
Apache 1.3.29 with PHP 4.3.6 ). But on my Linux Enterprise 3.0
production server (running Apache 2.0.46 with PHP 4.3.2) things are
different.

Here are the argument(s) that passthru hands to my command when safe
mode is off:

rrdtool args: graph - --start -3600 --end N --width 300 --height 75
--lower-limit 0 --rigid --title BaBarCM2 Grid Load last hour
--vertical-label Load/Procs
DEF:load_one=/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/load_one.rrd:sum:AVERAGE
DEF:proc_run=/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/proc_run.rrd:sum:AVERAGE
DEF:cpu_num=/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/cpu_num.rrd:sum:AVERAGE
DEF:num_nodes=/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/cpu_num.rrd:num:AVERAGE
AREA:load_one#CCCCCC:1-min Load LINE2:num_nodes#00FF00:Nodes
LINE2:cpu_num#FF0000:CPUs LINE2:proc_run#0000FF:Running Processes

And this is what passthru hands to my command when safe mode is on:

rrdtool args: graph - --start -3600 --end N --width 300 --height 75
--lower-limit 0 --rigid --title 'BaBarCM2 Grid Load last hour'
--vertical-label 'Load/Procs'
DEF:'load_one'='/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/load_one.rrd':'sum':AVERAGE
DEF:'proc_run'='/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/proc_run.rrd':'sum':AVERAGE
DEF:'cpu_num'='/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/cpu_num.rrd':'sum':AVERAGE
DEF:'num_nodes'='/u2/ganglia/rrds/BaBarCM2/__SummaryInfo__/cpu_num.rrd':'num':AVERAGE
AREA:'load_one'#CCCCCC:Ƈ-min Load' LINE2:'num_nodes'#00FF00:'Nodes'
LINE2:'cpu_num'#FF0000:'CPUs' LINE2:'proc_run'#0000FF:'Running
Processes'

The quotes are still there. Why am I not getting consistent behaviour
on both platforms? Is this a bug in php 4.3.2 or 4.3.6?

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Passthru(ls -alr) And Opendir - At The Same Time
I'm able to print a directory with opendir, but currently the files are in random order.
My goal is to determine a way to use passthru (or some similar function... exex or system maybe) to sort the directory prior to listing it on the screen. I want to use open dir so I can make a link to the files (otherwise a simple <pre></pre> output would do nicely).

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Passthru Point To Pfsock
i make the commands execute right after the connection is made because the connecting closses if $password isnt sent right away. PHP Code:

pfsockopen($ip,$port);

passthru ($password);
passthru ("/say [SERVER BOT]user has logged into".$site."");
passthru ("/lobby");

if ($command1==""){
Â Â exit;
} else {
passthru ($command1);

if ($command2==""){
Â Â exit;
} else {

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Warning: Exec() [function.exec]:
I'm using PHP Version 5.0.4 in IIS5, Window 2003. When I execute my script, it prompt me the following error :

Warning: exec() [function.exec]: Unable to fork [ping 10.8.1.70] in c:Inetpubwwwrootswitch.php on line 62
Below is my script :

<?php
$line1 = exec("ping 10.8.1.70", $output);
exit;
?>

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Passthru + Auto Generated Headers
I'm slightly confused with the passthru() command. The program I call writes
html headers itself. However, passthru() makes apache sending some generated
headers first. There's no fault with spaches in the code etc, I think.
Here's an simplified example:

$ cat /www/example.php

<?
passthru("cat /tmp/output");
?>

$ cat /tmp/output
Content-Type: text/html

<HTML><HEAD></HEAD>Message</BODY></HTML>

$ curl -i "http://localhost/example.php"
HTTP/1.1 200 OK
Date: Sat, 16 Jul 2005 14:47:29 GMT
Server: Apache/2.0.54 (Unix) mod_ssl/2.0.54 OpenSSL/0.9.7d DAV/2 PHP/5.1.0b3
X-Powered-By: PHP/5.1.0b3
Content-Length: 66
Content-Type: text/html

Content-Type: text/html

<HTML><HEAD></HEAD>Message</BODY></HTML>

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Problems With Dynamic File Passthru
I am having problem getting file passthru working with MSIE 6.0. I generate a dynamic file based on parameters from a form submission, zip it and then do the following: Code:

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Passthru() Returns Nothing In Browser But Works In Local
look at my code below. It returns nothing from browser but it works fine by #php myscript.php locally. PHP Code:

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System(); Command Not Working On Remote System. Windows.
My server is a windows machine, on the same domain as python(also a windows machine). Apache is running as a service as an administrator. This is a test only environment to whom it may concern(I hate people telling me how insecure my system is) I'm just trying to run:

$last_line = exec('dir pythonc$', $retval, $g);
print_r($retval);
echo ' '.$g.' ';
echo '$last_line= '.$last_line.' ';
Which outputs:

Array ( )
1
$last_line=

The command from the command line works fine. And apache can access directories that only administrators can access on the local machine.

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Make A News System With A Template System
i'm a total,and mean total newbie in PHP. I want to make a news system with a template system(like footer.php and header.php) but dont know how to?

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Login System - News System
i have to do a news system wich use php/mysql.

i need 3 accounts:

* a 'reader' who doesn't need to log in to read the news
* a 'writer' who can write news in a pending news table
* a 'moderator' which validate a pending news, and make it a regular news,
viewable from the site (by the 'reader')

This is a small web site, so i can't use SSL; and i use php sessions.

Right now, i deal with account from a mysql users point of view, which
means, that a 'reader' can access all the admin part of the site, but will
ger errors when trying to read/write by sql query.

I was wondering if somedody could give me a trick to deny access to the
admin pages. Rigth now, i though about these:

* by decoding mydql rights? (how)
* by doing only-to-test query? (bad i think, especially for write right)

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Need Help With Exec()
On Redhat linux, the command "passwd user" is interactive, so how can I pass data to and from the command with system() or exec()?

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Exec();
well i know that exec("ndc reload"); would perform that command.. but i want too print out on the page what the command tells when i do like this:
[root@xermin cryzeck]# ndc reload
Reload initiated.
[root@xermin cryzeck]#

i want to print that Reload initiated. on the page.. how? not just echo("reload initiated"); but the stuff the command tells.

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Using Exec()
I'm trying to use the exec() function to call shell scripts that in turn startup various programs under linux.. for example, when someone clicks on a link to restart a particular daemon, the daemon will then simply executed, either through the standalone command of /location/daemon or through the calling of a shell script that essentially performs an identical task.

My problem is that exec() seems to only work through the user "nobody," which the Apache web server is running under. The scripts and programs I'd like to execute are under a user account named "admin."

I've even tried chmod'ing all pertinent files w/ permissions that "nobody" could use to successfully access all necessary commands, without success, as the programs seem to crash whenever I do this.

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PHP And Exec(dir)
I have been using opendir and scandir, but I want to try something
else.
Idea: using dir, and a) getting the result b) saving it as a file.

As I have problems with executing files directly, it create a bat file
and executes that.
I can execute command, but by some reason I dont get any response (it
should return something, and I get "")
The missing response is why I create a file.

I create the file on the network ( serversomewhere ) like this

dir "serversomewherefilesdir" >"serversomewhere
esult.txt"

Here is the odd thing: dir cannot read from the network - the bat file
is created there, it creates the result.txt file, but emtpy as it
cannot read from the network. Reading from c: and it works.

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