<?php

class bigdata {
    
    
    public $absolutePrefix = '';
    public $relativePrefix = '';
    
    
    static function startDataSession($data='') {
        $this->absolutePrefix = 'static/uploads/temps/';
        $this->relativePrefix = '';
        
        if ($data!='') {
            $temp_file_name = $this->absolutePrefix.time().".dat";
            file_put_contents($this->relativePrefix.$temp_file_name,$data);
            return $temp_file_name;
        }
        else {
            return false;
        }
    }
    
    
    static function appendDataSession($data,$temp_file_name='') {
        if ($data!='' && $temp_file_name!='') {
            $fa = fopen($this->relativePrefix.$temp_file_name,'a');
            fwrite($fa,$data);
            fclose($fa);
            return $temp_file_name;
        }
        else {
            return $temp_file_name;
        }
    }
    
    
    static function loadDataFile($file_name='') {
        if ($file_name!='') {
            $data = file_get_contents($file_name);
            return $data;
        }
        else {
            return false;
        }
    }
    
    
}