Detailed explanation of bus transfer function code developed by WeChat

1) API application
2) API call
3) [b] Effect display [/b]
4) Accurate query
------------ -------------------------------------------------- ------------
1) API application

Aibang provides query interface API, you need to apply for Key www.aibang.com

The number of queries is limited , 2013-12-4 Up to 1000 times/10 times/minute per day

Returnjsondata

Provide data description

Provide demo file

2) API call

After calling the API to obtain the data, you can output it in your own format

/*
     aibang's api return josn data
     
     d_eng (sh109419@163.com)
     2013-12-4
 */
 
define("APP_KEY", "xx00ac396d6d75e8681fc8380060c5b2");
include_once "ABClient.php";
 
//header("Content-Type:text/html; charset=utf-8"); 
 
function bustransfer($city,$start,$end) {
    $client = new ABClient(APP_KEY);
    list($code, $arr) = $client->getBusTransfer($city, array("start_addr" =>$start, "end_addr"=>$end));
    if ($code<>200){
        return false;
    }
     
    $ret ="";
    $buses = $arr[buses][bus];
    // show the top 3 records
    $ret = $start ."-->".$end."\n";
    $count = 1;
    foreach ($buses as $bus) {
        if ($count > 3) break;
 
        $segments =$bus[segments][segment];
         $ret .= "<方案".$count++.">\n";
        // get line name and remove remark
        $linename = "";
        foreach($segments as $segment) {
            if (!empty($linename)) $linename .= &#39;--&#39; ;
            $linename  .= shortlinename($segment[line_name]);
        }
        $ret .= $linename . "\n" ;
        $total = sprintf("%d分钟 %d米 步行%d米",$bus[time],$bus[dist],$bus[foot_dist]);
        $ret .= $total . "\n" ;
        // detail
        $from = sprintf("从 %s ",$start);
        $ret .= $from;
        foreach($segments as $segment) {
            if ($segment[foot_dist] > 0) {
                $segfoot = sprintf("步行%d米 到达 %s",$segment[foot_dist],$segment[start_stat]);
                $ret .= $segfoot . "\n" ;
            }
            $stats = substr_count($segment[stats],&#39;;&#39;);
            $line = sprintf("乘坐 %s(%d站) 到达 %s",shortlinename($segment[line_name]),$stats,$segment[end_stat]);
            $ret .= $line . "\n" ;
        }
        if ($bus[last_foot_dist] > 0) {
            $lastfoot = sprintf("步行%d米 到达 %s",$bus[last_foot_dist],$end);
            $ret .= $lastfoot;
        }
    }
    return $ret;
}
 
function shortlinename($linename){
    return substr($linename,0,strpos($linename,&#39;(&#39;));
}
 
$a=bustransfer("南昌","老福山","青山路口");
var_dump($a);

3) Effect display

4) Accurate query

In bus query, you are required to enter the bus/subway station name

If you don’t know the accurate station name, you often cannot get the result,

On the web page, the system can prompt you to select the correct bus stop,

However, it is inconvenient to do this on WeChat

The improvement plan is as follows:

Aibang has a bus station query API

Use this API to find the stations near the user's input information and take out the first one as a bus transfer station

In this way, the probability of successful bus transfer search increases.

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