Call EE actions via cron

cron.php

<?php

/*
Cheap way to fire off EE's ACT events in a crontab, and without having
to make any other changes to bootstrap EE to work in CLI.
*/

if (isset($_SERVER['SERVER_NAME']) || PHP_SAPI !== "cli") die();

$args = $argv;

//remove first element from the argument array (script name)
array_shift($args);

/**
 * convert arguments in the format --key1=value1  --key2=value2 to
 * ?key1=value1&key2=value2
 *
 * Example call: cron.php --var=foo
 *
 * Examples
 *
 * Run every Friday at noon
 * 0 12 * * 5 php /path/to/site/cmd/cron.php --ACT=65
 *
 * Run every day at 6 am
 * 0 6 * * * * php /path/to/site/cmd/cron.php
 *
 */
if ( ! empty($args)) 
{
    foreach($args as $param) 
    {
        if (strpos($param, '--') === 0) 
        {
            $param_string = substr($param, 2);
            if ( ! empty($param_string)) 
            {
                if (strpos($param_string, '=') !== false) 
                {
                    list($key, $value) = explode('=', $param_string);
                    $_GET[$key] = $value;
                } 
                else 
                {
                    $_GET[$param_string] = null;
                }
            }
        }
    }
}

if(isset($_GET['site_url']) AND isset($_GET['key']) AND isset($_GET['action']))
{
    if($_GET['action'] == 'export')
    {
        exec("wget --quiet --output-document=cmd/cron_output.html '". rtrim($_GET['site_url'], '/') ."/?ACT=65&key=". $_GET['key'] ."'");
    }

    if($_GET['action'] == 'import')
    {
        exec("wget --quiet --output-document=cmd/cron_output.html '". rtrim($_GET['site_url'], '/') ."/?ACT=73&key=". $_GET['key'] ."'");
    }

    if($_GET['action'] == 'update_literature_dates')
    {
        exec("wget --quiet --output-document=cmd/cron_output.html '". rtrim($_GET['site_url'], '/') ."/?ACT=105&key=". $_GET['key'] ."'");
    }
}