[atholon]

Bam, atholon fail, you'd use the function explode();

Here you go:

<?php

$file = fopen("yourfile.csv", "r") or exit("Unable to open file!");

// Row array
$rows = array();

while(!feof($file))
{
  $columnString = fgets($file);
  $columns = explode(",", $columnString);

  // Add the array of column items to the row
  $rows[] = $columns;  
}
// This would return ALL the data to the javascript with AJAX
echo(json_encode($rows));
?>

You could get away with making multiple AJAX requests and having the code behind filter it but I suggest just doing one AJAX request at the time the page loads. That way you don't have the annoying delay while the results are passed back.