weather.com

Category:Library::Community | Category:Library::Weather [code]<?php /**

• Weather Script for CodeIgniter
• @author Kevin Burton [CoDeR]
• @package CodeIgniter 1.5.x
• @subpackage Libraries
• @version 1.1
• Thanks to Nick Schaffner from 53x11.com for the script.
• This has been modified and ported to CodeIgniter 1.5.4
• REQUIREMENTS
• 1. URL and DATABSE must be loaded.
• 2. Set the below paramters
• 3. By requirements of the weather.com API, you can only refresh the weather a minimum of 30 minutes.
• You can set this to more if you want by changing the cache_time value.
• 4. If you do not have the table setup already, the constructor will do it for you automatically.
• 5. You will need to register with weather.com and it will give you a folder of icons you use with
• the system. This system will output the filename for it.
• 6. ENJOY!
• USAGE
• <?
• $config['zipcode'] = 'XXXXXXX';
• $config['partner'] = 'XXXXXXX';
• $config['license'] = 'XXXXXXX';
• $this->load->library('weather', $config);
• ?>
• Get the array by calling: $this->weather->get_weather();
• To spit out the contents of the array, use: $this->weather->trace_array();
• OR
• You can access the variables individually instead of through the get_weather() function
• Example: $this->weather->sunr; // Sunrise.
• or $this->weather->icon; // the icon name

*/

class Weather {

/* You must modify these variable to match your own */
var $zipcode = 'XXXXXX';
var $partner = 'XXXXXXXXX';
var $license = 'XXXXXXXXXXXXX';
var $wfile = './assets/weather/cache/weather.xml';
var $units = 'm';
var $table_name = 'weather';
var $site_name = 'local';

/* DO NOT MODIFY below: */
var $xmlserver = 'http://xoap.weather.com/weather/local/';
var $CI; // declare holder for CodeIgniter
var $cache_time = 30; // 30 minutes requied for cache
var $data_array = array();

/**
* PHP4 Constructor
*
* @return Weather
*/
function Weather($params = array())
{
    $this->CI =& get_instance(); // load instance of CodeIgniter
    $this->CI->load->helper('file'); // load File Helper functions
    $this->initialize($params);
}

/**
* Class Initialization
*
* @access public
* @param array $params
* @return void
*/
function initialize($params = array())
{
    if( count($params) > 0 )
    {
        foreach ($params as $key=>$value)
        {
            $this->$key = $value;
        }
    }
    $this->_check_install();
    $this->_setURL();
    $this->_requestXML();
}

/**
* Trace method… Array and Object Friendly viewer
*
* @param unknown_type $obj
* @param unknown_type $die
*/
function trace($obj, $die=false)
{
    print("");
    print_r($obj);
    print("</pre>");
    
    if($die)
    {
        die();
    }
}

/**
* Check Installation
*
* @access private
* @return void
*/
function _check_install()
{
    //$this->trace($this->CI, true);
    if (!$this->CI->db->table_exists($this->table_name))
    {
        $sqlstmnt = "
            CREATE TABLE '{$this->table_name}' (
            'site' varchar(64) NOT NULL default '{$this->site_name}',
            'last_request' timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
            'tstamp' int(16) NOT NULL default '0'
        ) ENGINE=MyISAM DEFAULT CHARSET=latin1;";
        $this->CI->db->query($sqlstmnt);
    }
}

/**
* Set URL
*
* @access private
* @return void
*/
function _setURL()
{
    $this->xmlserver = $this->xmlserver.$this->zipcode."?link=xoap&cc;=*&par;={$this->partner}&key;={$this->license}&unit;={$this->units}";
}

/**
* Request the XML for the weather.com server
*
* @access private
* @param unknown_type $zipcode
* @return void
*/
function _requestXML()
{
    $query = $this->CI->db->query("SELECT tstamp FROM {$this->table_name} WHERE site='{$this-<site_name}' LIMIT 0,1");
    if($query->num_rows()==0)
    {
        $this->seek(true);
        return;
    }
    else
    {
        $row = $query->row_array();
        if( (time()-$row['tstamp']) > (60*$this->cache_time) )
        {
            // get a fresh copy of the XML;
            $this->seek(true);
            return;
        }
        else
        {
            $this->seek(false);
            return;
        }
    }
}

/**
* Grab the data....
*
* @access private
* @param bool $fromWeatherCom
* @return void
*/
function seek($fromWeatherCom = false)
{
    $xml_parser = xml_parser_create();

    if($fromWeatherCom==true)
    {
        $data = implode('', file&#40;$this->xmlserver&#41;);
        write_file&#40;$this->wfile, $data&#41;;
    }
    else
    {
        $data = read_file&#40;$this->wfile&#41;;
    }

    xml_parse_into_struct($xml_parser, $data, $vals, $index);
    xml_parser_free($xml_parser);
    
    $t = true;

    foreach ($vals as $row)
    {
        if( isset($row['value']) )
        {
            if( $row['level']==3 )
            {
                $tag = strtolower($row['tag']);
                $value = $row['value'];
                $this->$tag = $value;
                $this->data_array[$tag] = $value;
            }
        }
    }

    $query = $this->CI->db->query("SELECT site FROM {$this->table_name} WHERE site='{$this-<site_name}'");
    if( $query->num_rows()==0)
    {
        $this->CI->db->query("INSERT INTO {$this->table_name} (site, tstamp) VALUES ('{$this->site_name}',".time().")");
    }
    else
    {
        $this->CI->db->query("UPDATE {$this->table_name} SET tstamp='".time()."' WHERE site='{$this-<site_name}'");
    }
}

/**
* Spit out the data_array
*
*/
function trace_array()
{
    $this->trace($this->data_array, true);
}

/**
* Grab all the data....
*
* @return array
*/
function get_weather()
{
    return $this->data_array;
}

}

?>[/code]