title: php script in background in ubuntu
body: <p>i have a php script. i want to run this in background in ubuntu . i tried using &amp; after the extension .php</p>
  
  <pre><code>php filename.php &amp;
  </code></pre>
  
  <p>it displays something like  :   "[1] 15996" this. i dont understand the meaning of this. please someone help me with this. what should i do to run a php  script in background.
  and how do i check it.i used "top" command to check the files running.but,i just showed the terminal is running and does not show the exact file which iam running. pls help me with this too</p>
  
  <p>que: 1) how to run php script in background in ubuntu
       2) how do i check whether it is running or not</p>