Memo--Base station positioning Technology (reprint)

Many friends are using Google Geolocationapi interface to test base station positioning, testing needs to interface Http://www.google.com/loc/json to submit JSON format data, JSON format parameters are more, Testing in the IDE is also troublesome, sometimes because a grammatical error has to be checked for a long time.

Here Ant recommends a simpler way to test the correctness of the JSON data format: using the Curl Test.

Curl is a file transfer tool that uses URL syntax to work in a command-line manner. It is convenient to use Curl to submit HTTP Get/post data. Curl is a common tool under Unix/linux, as well as a version of Windows.

Geolocationapi's detailed syntax is not introduced here.

For example, we want to query lac:14556 by Http://www.google.com/loc/json, cellid:36525 base station location. According to the syntax mentioned in GEOLOCATIONAPI, the submitted data should be in this format:

{
"Version": "1.1.0",
"Host": "Maps.google.com",
"Access_token": "2:k7j3g6lal6u_lafw:4ixoeopth1glsxe",
"Home_mobile_country_code": 460,
"Home_mobile_network_code": 0,
"Address_language": "ZH_CN",
"Radio_type": "GSM",
"Request_address": true,
"Cell_towers": [
{
"cell_id": 36526,
"Location_area_code": 14556,
"Mobile_country_code": 460,
"Mobile_network_code": 0,
"Timing_advance": 5555
}
]
}

Let's use curl to test that the format is correct.

Command format: curl-d ' post data ' Http://www.google.com/loc/json

Here we only need to use the-D parameter of curl, followed by-D is the data content of post

At the command line, enter "Curl-d '" after the return, paste the above JSON format data entry, and then enter "' Http://www.google.com/loc/json" return, you can see the results of Google returned.

A variety of JSON parameter combinations can be easily tested by curl.

More than the interface description, I wrote the following available code

<?php
function Curl_post ($url, $vars, $second =30)
{
$ch = Curl_init ();
curl_setopt ($ch, Curlopt_timeout, $second);
curl_setopt ($ch, Curlopt_returntransfer, 1);
curl_setopt ($ch, Curlopt_url, $url);
curl_setopt ($ch, Curlopt_post, 1);
curl_setopt ($ch, Curlopt_postfields, $vars);
$data = curl_exec ($ch);
Curl_close ($ch);
return $data;
}

$vars = ' {
"Version": "1.1.0",
"Host": "Maps.google.com",
"Access_token": "2:k7j3g6lal6u_lafw:4ixoeopth1glsxe",
"Home_mobile_country_code": 460,
"Home_mobile_network_code": 0,
"Address_language": "ZH_CN",
"Radio_type": "GSM",
"Request_address": true,
"Cell_towers": [
{
"cell_id": 36526,
"Location_area_code": 14556,
"Mobile_country_code": 460,
"Mobile_network_code": 0,
"Timing_advance": 5555
}
]
}';
$rdata = Curl_post (' Http://www.google.com/loc/json ', $vars);
$r _ary = (array) json_decode ($rdata);
Print_r ($r _ary[' location ']);
?>