title: PHP static counter?
body: <p>I'm trying to create a script that will retain a count, even when it is called multiple times. This is to give unique IDs to certain things lines that the script is writing to a file.</p>
  
  <p>For exmaple:</p>
  
  <pre><code>Monday I call the script and make 2 lines. The script gives ID 1 and 2 to those lines.
  Friday I call the script again and make another line. The script gives ID 3 to this one.
  etc
  </code></pre>