Shell_exec Using System Tools - Wait For Process To Finish

Aug 14, 2005

I have a problem that hopefuly someone here knows the answer to. I want to do a shell_exec command from PHP.

I then want to continue with the script when the shell program is finished with what it does. Problem here is, that will take approximately one hour. How do I make the script wait until the program that I call in shell_exec is finished?

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Parent Process Wait For Its Child To Finish Executing?

Sep 28, 2009

I have the most basic script:

$pid = pcntl_fork();
if ($pid == -1) {
die('could not fork');
} else if ($pid) {
// we are the parent
echo "parent done";
pcntl_wait($status); //Protect against Zombie children
echo "all done";
} else {
// we are the child
echo "Child finished";
}

When I run this, the output is always "Child finished". I'm running this on a lighttpd server.

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I have a code where I need to use an IFRAME to load something from external page then display that the process has succeeded, then a message shows that user can close the browser. Now I'm using sleep() to delay the page (and hope that the IFRAME will finish loading within that time). But I dont think this is working as different people have different connection speed. Code:

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Mar 17, 2011

In my case I need to echo a flag to client side and send an email .

Now client side needs to wait until the email is sent...

But I want to separate these two steps,how to do that?

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Aug 18, 2010

I need to call a script called build_report.php, pass in a URL variable named partno and wait until it is finished before continuing.

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Which should I use exec or cURL?

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Why Shell_exec Executing More Than 1 Process

Dec 21, 2009

I dont understand why there is more than 1 process when I run run.php once from a browser

In the PHP code, I have the following:

run.php
<?php
shell_exec("php theprocess.php > /dev/null 2>&1 &");
?>

[code]....

I execute run.php from the browser [URL] Then I typed: ps aux | grep php

username@ [~]# ps aux | grep php
username 27272 0.0 1.5 89504 64468 ? R 17:33 0:00 php theprocess.php
username 27274 0.0 1.2 89504 49872 ? R 17:33 0:00 php theprocess.php

[code]....

I dont understand why is it showing more than 1 theprocess.php process? Also why it still running at the background? it should terminate theprocess.php finish the task.

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Shell_exec Executing More Than 1 Process?

Jul 7, 2011

I dont understand why there is more than 1 process when I run run.php once from a browserIn the PHP code, I have the following:run.php

<?php
shell_exec("php theprocess.php > /dev/null 2>&1 &");
?>
[code]....

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Mar 13, 2006

Basically, and end user views my page, in doing this, PHP on my server will have to run a command line app and display the output in the browser.

This is really simple just by using shell_exec($cmd) where $cmd is something that creates some output.

The problem I'm having is that the program I execute from command line, stays open. This forces a deadlock in php until the process is closed, since it doesn't close itself after the output. Code:

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Find A Process ID From Its Path Using Shell_exec?

May 13, 2011

I need to provide my users with a way to stop their cron task so that it can restart on its 5 minute cycle.

I think I need to use shell_exec to get the processes back and then kill the specific process. The only way I will be able to distinguish this process from the others running on the server are the paths i.e php /home/sconmod/public_html/**URN**/Includes/System/CronTask.php.

Does anyone know a way I can get the process ID of a process by matching the path?

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Shell_exec Background Process *Windows*

Oct 8, 2007

I am trying to get a shell_exec command to run in the background. So far I have tried:

$ret = shell_exec($ffmpegcmd1." >NUL 2>&1");$ret = shell_exec($ffmpegcmd1." >NUL 2>&1 &");$ret = shell_exec($ffmpegcmd1." >NUL");

without any luck.

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Shell_exec() Can I Run 2+ Of The Same Process On A Linux Machine?

Mar 3, 2010

using shell_exec() can I run 2+ of the same process on a linux machine?

Currently I have this:
$newPort = newPort();
[code]....

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System() And Shell_exec() Methods?

Jun 28, 2011

I am working with a WAMP installation (on Windows).Do the methods system() and shell_exec() only work on Linux machine or are they available on Windows, too? I am trying these methods in Windows but nothing is working.

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Exec(), System(), Shell_exec(), Etc + Nmap

Aug 31, 2007

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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Feb 17, 2011

First thing:I know that there is interface to W3C validator.

[URL]...

But I don't know if I can install it on cheap hosting server.need validator for my seo tools within my Content Managment System so it must be pretty much portable.I would love to use W3C but only if it would be portable.I can also use Curl for this but it won't be elegant solution.

[URL]...

Is there any validator comparable to W3C but portable(only PHP that does not depend on custom packages)?

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Oct 26, 2005

Can't get these commands to work! The following page simply doesn't
finish loading ( Waiting... Opening... :-( )

<?php echo system("dir"); ?>

The same for <?php echo exec("dir"); ?> or <?php echo
shell_exec("dir"); ?>, etc...

I'm running Apache 2.0.55 & PHP 5.0.5 with Zend Optimizer v2.5.10 on
windows XP SP2.

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I'm trying to run shell command like this from php:ls -a | grep mydirBut php only uses the first command. Is there any way to force php to pass the whole string to the shell?

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Jul 19, 2010

I am working on Windows server and able to run command from command prompt

c:> %convertxls% {some args....}

But when I run same command from php script

*shell_exec(%convertxls% ..... 2>&1);*

it gives me error as%convertxls% is not recognized as an internal or external command, operable program or batch file.I think when I am running command from command prompt, it run for user which logged in. And when I run the php script it run for "www" user for which path is not set.Can anybody tell me where I am doing mistake?

*Note: I haven't written complete command.

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Oct 15, 2010

there are multiple specific examples but I just wanted to have a working generic calling PHP into background example from shell_exec. So my php function runs a large processing job. On the top of the script (process.php) I put?

!#usr/bin/php

i think - any way to get that specific path, maybe 'which php'? then the actual command is

shell_exec(sprintf('php process.php %s %s > /dev/null 2>/dev/null &','data1','data2'));

and access the data from process.php with argsv[1] and argsv[2]?

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May 28, 2005

I'm working on a script that will dump a MySQL database to a file with exec(mysqldump [args]), then will let the user download the database.

The dump may take a few seconds, so I want to user to be forced to wait before downloading the file.

How can I tell my script to wait $x seconds before performing the next step in the script?
Even better, would be the ability to wait until the dump is done. Is this possible with PHP?

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System(), Exec(), Shell_exec(), But "Permission Denied"

Jun 21, 2005

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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Aug 13, 2010

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Dec 29, 2010

Access webservices using PHP's soap.

Here's my code:<?php
test connection to agwebservice
$agLogURL

[code]...

Fatal error:Uncaught SoapFault exception:soap:Server]System.Web.Services.Protocols.SoapException:Server was unable to process request --->System.NullReferenceException:Object reference not set to an instance of an object.at AgemniLogin.agLogin(String dn, String username, String password)---End of inner exception stack trace---in C:XAMPPxampphtdocsagsyncsyncwork.php:12 Stack trace:#0[internal function]:SoapClient->__call('aglogin', Array) # 1.C:XAMPPxampphtdocsagsyncsyncwork.php(12):SoapClient->aglogin('myDN', 'myUserName', 'myPassword') #2{main}thrown in htdocsagsyncsyncwork.php on line 12.Not sure if you'll need more info on the SOAP services.

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Jun 29, 2011

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system("mysql -u$user -p$pass $db < '$file' &");

Running it that way locks my browser and I have to wait until it's finished before I can do anything. This works fine on my other server. What settings could be preventing that from working on the first server?

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Sep 10, 2010

Hi! I am new to the world of coding, but am slowly learning. I am working on an internet scavenger hunt- so people search for a hidden icon on different sites all over the net. they are given a list of links to the sites participating and a riddle to help them find the right page on the site.

What I need: I need to code the icons so when clicked the user is returned to my site and it logs that that icon has been found. This is the main thing I need to get done. If it is possible I would also like to be able to give the users the option of saving their favorite sites maybe with a comment or adding a note option... and it would be nice if I could also show the sponsors how many people have found their icon.

I have it set up with registration and logins already... how do I go about finishing this project?

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I'm trying to execute a portion of code within a specific number of seconds. If it fails, I need to break out and do something else. To give you an idea of what I mean, take a look at the pseudo code below:

--------
try to complete the code below for 3 seconds { do something that could take a long time. if it doesn't complete within 3 seconds, generate an error which will abort the processing of further instructions in this try } catch (Exception $e) { Execute some different commands since the code above didn't finish quickly enough.}
---------

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I'm trying to accomplish this, with the 360 grid system: [URL] From a database i'm getting products which will be displayed in lines with 4 on each.It's working perfectly if there is exactly 4 products under each category, but if there is less than 4 products in a category, the design is messed up, because the div's not closed properly.Problem is that sometimes there's only 3 or less products on a line.

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$prevprod = $products[$i-1]['name'];
$curprod = $products[$i]['name'];

[code]...

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for ($i = 1 ; $i >= 5; $i++)
{
$file = gzfile($i.'.gz')
...gz content processing...
}

However, since the gz file is really big, I cannot do that, because if I use this loop, PHP will run multiple big gz files as single script job. (takes a lot of memory) What I want to do is after PHP is finished with one job I want a new job to process the next file. maybe its going to be something like this:

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How can I detect when the form submission has finished, hence the dialog box has been shown?

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Sep 19, 2010

I have StartServer.php file that basically starts a server if it is not already started. Everything works perfect except that the StartServer.php will hang forever waiting for the shell_exec()'d file Server.php to finish its execution that it never does.

Is there a way to execute a PHP file and just forget about it -- and not wait for its execution to finish?

Edit: It has to work on Windows and Linux.

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May 18, 2011

Why do I need to finish by using the fclose($handle) function after writing to a file using php? Doesn't the program automatically do this when it ends?

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May 2, 2010

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All the ajax request I know have to wait until the request has finished before having access to the response, I need to get access to that response even when it hasn't finished so I can update the progress in real time.

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Oct 15, 2009

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parse the xml
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Jan 14, 2010

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The code I've seen for linux is:

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Mar 7, 2010

Objective: My script will download a remote file upon form submission, since the file might be big, I would like to fork off a process and let the user go on with his/her life.

Example of a command:

wget -q --limit-rate=1k --tries=10 "http://helios.gsfc.nasa.gov/image_euv_press.jpg" -O /web/assets/content/image/image_euv_press.jpg

Method tried:

pcntl forking,
$pid = pcntl_fork();
if ( $pid == -1 ) {
exit;
} else if ( $pid ) {

[Code]....

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