<?php

/**
 * This example is written in PHP
 * It demonstrates
 * - creating a CSDL statement
 * - making an API request to Datasift
 * - displaying the data returned
 */

//Step 1 Define authentication details
define('USERNAME', 'genesis');
define('API_KEY',  '79878d08b0d59ac30eab9e1ca36c1e0f');

//Step 2 - Include the DataSift library - This is the only file "required"*
require dirname(__FILE__) . '/lib/datasift.php';

//Step 3 - Create a "User" object for authentication
$user = new DataSift_User(USERNAME, API_KEY);

/**
 * Step 4 - Define a CSDL filter for compilation.
 * The 'words' array is a set of terms we will filter from Twitter
 * Notice the 'interaction.type=="twitter"'
 * The use of implode simply concatenates each word in the words array with
 * a prefix that results in a string such as:
 * interaction.type == "twitter" and (interaction.content contains "music" or interaction.content contains "mtv"
 * or interaction.content contains "itv" or interaction.content contains "skyb2b" or interaction.content contains
 * "news" or interaction.content contains "csi" or interaction.content contains "criminal minds")
 */

$words = array('music', 'mtv', 'itv', 'skyb2b', 'news', 'csi', 'criminal minds');

// Create the definition
$csdl = 'interaction.type == "twitter" and (interaction.content contains "' . implode('" or interaction.content contains "', $words) . '")';

//Step 5 - Create a definition using the user object and the generated CSDL
$definition = new DataSift_Definition($user, $csdl);

//some vars to use later
$hash = null;
$created = null;
$cost = null;

//Step 6 - explicitly compile the definition
try {
    $definition->compile();

//Step 7 - If everything is okay then we can now get the hash,created_at and cost values that are returned
    $hash = $definition->getHash();
    $created = $definition->getCreatedAt();
    $cost = $definition->getTotalCost();

    print 'Stream hash : ' . $hash . " \n";
    print 'Created at : ' . $created . " \n";
    print 'Total costs : ' . $cost . " \n";
}

catch (Exception $e) {

//If there is an exception then a few things could have gone wrong so the message included would help
echo 'Caught exception: ', $e->getMessage(), "\n";
}

?>