Google Trend API codeigniter php

This is a basic libary enable you to read/save google trends keywords as a JSON once a day. If JSON appear, read it. If not, curl the keyword and save as a JSON for next request. This library is used with the curl.

Package CodeIgniter / PHP
Subpackage Libraries
Author kelvin Kwong Ho
Version 0.1
Date 9/1/2013

For some moments, my site needs a content or keyword for dynamic run or request. Like the site of http://zonmine.com, call google trend once a day to gather the hot keyword in shopping (for 30 days and 7 days ). Then it uses the Gtrend keyword to search products in Amazon. The content will appear updating daily and easily go up to 2000-5000 products in few days.

Get the google trend keywod and save as a JSON

1. PHP 5.1+ with curl which I used a Curl library ( https://github.com/philsturgeon/codeigniter-curl ) .
2. CodeIgniter

$response = $this->create_trend_keyword( );

//return json ["ipod","tv","camera","xbox","sony","speakers","nikon","xbox 360","headphones","ipod touch"]

1. Put the Gtrend.php under codeigniter "application/libraries" and make sure you have the Curl.php or $this->curl funtion

2. Loading the libraries by either one of the following way:
   a. Autoload 'config/Autoload.php' add a param in $autoload['libraries'] = array('Curl', 'Gtrend');
   b.

   function __construct() {
   
   parent::__construct();
   
   $this->load->library('Gtrend');
   
   }

   
   c.

   $this->load->library('Gtrend'); 

3. setup the JSON file data path : $config['data_base_path'] = 'www/data/';

4. Call the library as follow :

 $result = $this->create_trend_keyword( ); //default is cat "0-18-78" => Shopping > Consumer Electronics, type TOP  
 $result = $this->create_trend_keyword( $category, $type );

5. The keyword JSON is now stored as {data_base_path}/{Ymd_type_cat_}.json
   e.g. 20130901_TOP_0-18-78_.json
   Content :

["ipod","tv","camera","xbox","sony","speakers","nikon","xbox 360","headphones","ipod touch"]  

https://github.com/kelvin2go/GoogleTrend/

http://zonmine.com

The data is from
http://www.google.com/trends/fetchComponent

http://www.google.com/trends/fetchComponent?hl=en-US&cat=0-18-78&geo=US&date=today+1-m&gprop=froogle&cmpt=q&content=1&cid=TOP_QUERIES_0_0&export=3

You will have chance to reach your limit for curling google trends.

If you have any questions or found any bugs, please message or pull request me.