Writing to file within class

[aaronk42]

I'm new to object orientation in PHP. The relevant bits are thus:

class Show {
  var $date;
  var $venue;
  var $comments;

  function Show($d, $v, $c) {
    $this->date = $d;
    // and for the others
  }

  function writeToFile($outputFile) {

fwrite($outputFile, $this->date);
// and for the others

  }
}

When I call writeToFile(), I get a " fwrite(): supplied argument is not a valid stream resource..."

The heck does that mean?

Thanks.

[borntodie]

Did you get a file handle using fopen()?
i.e.:

  function writeToFile($outputFile) { 
    $handle = fopen($outputFile, 'a') 
    fwrite($handle, $this->date); 
    // and for the others 

  }

[aaronk42]

Sorry. Yes, I did. That's what I'm passing to writeToFile().

[aaronk42]

Okay...so apparently it didn't work because I was passing the file handle to writeToFile(). I changed it so instead I pass the filename, and I use fopen() in the function. Works fine, now.

Why would it not work the way I had it originally (passing the handle)?