&gt; When the second parameter is set to
&gt; TRUE, print_r() will return the
&gt; information rather than print it


   

    $var_info = print_r($var,true);



I&#39;m wondering if this is the correct way to execute a system process and detach from parent, though allowing the parent to exit without creating a zombie and/or killing the child process.  I&#39;m currently using the subprocess module and doing this...

    os.setsid() 
    os.umask(0) 
    p = subprocess.Popen([&#39;nc&#39;, &#39;-l&#39;, &#39;8888&#39;],
                         cwd=self.home,
                         stdout=subprocess.PIPE, 
                         stderr=subprocess.STDOUT)

os.setsid() changes the process group, which I believe is what lets the process continue running when it&#39;s parent exits, as it no longer belongs to the same process group.

Is this correct and also is this a reliable way of performing this?

Basically, I have a remote control utility that communicate through sockets and allows to start processes remotely, but I have to ensure that if the remote control dies, the processes it started continue running unaffected.

I was reading about double-forks and not sure if this is necessary and/or subprocess.POpen close_fds somehow takes care of that and all that&#39;s needed is to change the process group?

Thanks.

Ilya

Python spawn off a child subprocess, detach, and exit

Is it possible to get a matrix column by name from a matrix?

I tried various approaches such as `myMatrix[&quot;test&quot;, ]` but nothing seems to work.

Extract matrix column values by matrix column name

In PHP I can say:

    print_r($var);
What I can&#39;t do (at least I don&#39;t know how) is:

    $var_info = print_r($var);
How can I accomplish the effect of putting the results of a `print_r` inside a variable?&lt;br/&gt;
PHP v5.3.5

putting print_r results in variable

In PHP I can say:
<pre><code class="hljs language-scss">print_r($var);
</code></pre>
What I can't do (at least I don't know how) is:
<pre><code class="hljs language-ini">$var_info = print_r($var);
</code></pre>
How can I accomplish the effect of putting the results of a <code>print_r</code> inside a variable? 
PHP v5.3.5

I tried to do a cron and run a url every 5 mintues.

I tried to use WGET however I dont want to download the files on the server, all I want is just to run it.

This is what I used (crontab):

    */5 * * * * wget http://www.example.com/cronit.php

Is there any other command to use other than wget to just run the url and not downlaod it?

Using WGET to run a cronjob PHP

Say I&#39;ve got a file `test.php` in `foo` directory as well as `bar`. How can I replace `bar/test.php` with `foo/test.php` using `PHP`? I&#39;m on Windows XP, a cross platform solution would be great but windows preferred.

How to copy a file from one directory to another using PHP?

Is there a way  that I can configure the [WAMP server](http://www.wampserver.com/en/) for PHP to enable the `mail()` function?

Configure WAMP server to send email

I have these all over my theme, and when if I delete them, there nothing happens to the theme. What does it do? Should I leave them in or are they unnecessary? I want to optimize my site to load faster, so this is why I&#39;m asking.

What does the WordPress &quot;_e()&quot; function do?

I&#39;m trying to read a specific line from a text file using php.
Here&#39;s the text file:  

    foo  
    foo2

How would I get the content of the second line using php?
This returns the first line:

    &lt;?php 
    $myFile = &quot;4-24-11.txt&quot;;
    $fh = fopen($myFile, &#39;r&#39;);
    $theData = fgets($fh);
    fclose($fh);
    echo $theData;
    ?&gt;

..but I need the second.  

Any help would be greatly appreciated  

Content Type	Original Author	Original Content on Stackoverflow
Question	Web_Designer	View Question on Stackoverflow
Solution 1 - Php	Shakti Singh	View Answer on Stackoverflow
Solution 2 - Php	Elijan Sejic	View Answer on Stackoverflow

putting print_r results in variable

Php Problem Overview

Php Solutions

Solution 1 - Php

Solution 2 - Php

Extract matrix column values by matrix column name

Python spawn off a child subprocess, detach, and exit

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