JSON

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Java Script Object Notation

Contents

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general

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PHP

PHP 5.2.1 natively supports JSON (see JSON at php.net)

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PHP-JSON

  • Mapbender now (March 2007) uses JSON-PHP to support previous PHP versions.
  • download
  • Example: generate JSON string from object 
//requires JSON library
require_once(dirname(__FILE__)."/../extensions/JSON.php");

//generate a PHP object, f.e.
$resultObj = array("id" => $row["wms_id"], "title" => $row["wms_title"], "abstract" => $row["wms_abstract"]);

//convert to JSON string
$json = new Services_JSON();
$output = $json->encode($resultObj);

header('Content-type: application/x-json');
echo $output;
  • Example: generate object from JSON string 
//requires JSON library
require_once(dirname(__FILE__)."/../extensions/JSON.php");

$object = $json->decode($jsonString);
print_r($object);
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JavaScript

Tutorial

download

Example 

var someObject = {};
..
// construct some object
..
// get the JSON string representation
someObject.toJSONString();
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jQuery

The Library above rewritten for jQuery:

download


Example 

var someObject = {};
..
// construct some object
..
// get the JSON string representation
$.toJSON(someObject);
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AJAX

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jQuery

Ajax → $.getJSON()

$.getJSON() sends an Ajax request via GET and returns a JavaScript object.

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Example

see gazetteerMetadata

/php/mod_gazetteerMetadata.php

/php/mod_gazetteerMetadata_search.php

Retrieved from "http://www.mapbender.org/JSON"
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