Walker Tracker API Documentation

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API Example

Calculate a user's step average versus that of his/her comrades

• Fetch data for user, process, retrieve average
• Fetch data for comrades, process, create array of averages
• Sum/Average step averages for comrades
• API requests
  • http://walkertracker.com/api/ben.serialized/view
  • http://walkertracker.com/api/ben.serialized/comrades

View the example - enter a username:

Code

<?php //This function fetches data from Walker Tracker API using CURL function wt_api_request($username,$data_format,$method,$date_range="") { $api_url = "http://walkertracker.com/api/"; $api_request = $api_url . $username . "." . $data_format ."/".$method; if($date_range !="") { $api_request .= "/" . $date_range; } $ch = curl_init(); $timeout = 10; // set to zero for no timeout curl_setopt ($ch, CURLOPT_URL, $api_request); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $curl_contents = @(curl_exec($ch)); curl_close($ch); return $curl_contents; } function convert_to_array($wt_data) { $wt_data = unserialize($wt_data); if(array_key_exists("error",$wt_data)) { echo "<br/><strong>ERROR:</strong>"; echo "<pre>"; print_r($wt_data); echo "</pre>"; exit; }else{ return $wt_data; } } //Using php function above, wt_api_request: $my_data = wt_api_request("ben","serialized","view"); //this function unserializes your data and checks for an error. //if there's an error it notifies you and exits. $my_data = convert_to_array($my_data); //$my_data returns as an array. Uncomment the results below to view the results. // echo "<pre>"; // print_r($my_data); // echo "</pre>"; $my_average = $my_data["average"]; $comrade_data = wt_api_request("ben","serialized","comrades"); $comrade_data = convert_to_array($comrade_data); //$comrade_data returns as a multi-dimensional array, so you'll want to loop through it. //uncomment the three lines below to view the results. // echo "<pre>"; // print_r($comrade_data); // echo "</pre>"; //array iterator $i=1; //create an array to hold comrade averages $averages = array(); //loop through list of comrades if(is_array($comrade_data)) { foreach ($comrade_data as $key => $this_comrades_data) { $averages[$i++]= $this_comrades_data["average"]; } } echo "<strong>"; echo "Step Average for "ben": " . number_format($my_average); echo "<br/>"; echo "Step Average of "ben"'s comrades: " . number_format(array_sum($averages)/$i); echo "</strong>"; ?>