Common functions

common.php

<?php
// Log to a file
function dump($data,$file='/var/log/mylog.log')
{
  file_put_contents($file, $data."\n", FILE_APPEND);
}

// Use some locking for a cron job
function lockit($name)
{
  $file = '/tmp/'.$name.'.lock';
  $fp = fopen($file, 'w+');
  if(!flock($fp, LOCK_EX | LOCK_NB)) {
    dump('Could not get lock');
    exit(-1);
  }
  return $fp;
}

// Handle creating a Mongo instance
function mongo()
{
  $connection = new Mongo(DB);
  $db = $connection->databasename;
  $db->authenticate(DB_USER,DB_PASS);
  return $db;
}