<?php
$counter = 0;
$newDay = FALSE;
if (($handle = fopen('FinalData.csv', 'r')) !== FALSE) { // Check the resource is valid
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) { // Check opening the file is OK!
		$counter += $data[0];
    }
    fclose($handle);
}

//clear if above a number

if (($handle = fopen('FinalData.csv', 'r+')) !== FALSE) { // Check the resource is valid
	if ($counter >= 80){
		ftruncate($handle, 0);
	}
	$data = fgetcsv($handle, 1000, ",");
	if ((end($data[1])-$data[1][0]) > 10){
		ftruncate($handle, 0);
	}
	fclose($handle);
}

echo $counter;
?>