php-json For Linux

php-json is an extremely fast PHP C extension for JSON (JavaScript Object Notation) serialisation. php-json project library uses a forked version of json-c.

It can be used in conjunction with XMLHTTPRequest to exchange JavaScript-encoded data with a browser.

A simple ./configure; make; make install should do the trick. Make sure to add an extension=json.so line to your php.ini/php.d. Note: you need to compile php-json with gcc 3.x and up.

Then, just use json_encode to encode your PHP values into JSON, and json_decode to decode JSON into a PHP value.

For example:

$output = json_encode($val); echo $output."n";

Would produce:

{ "abc": 12, "foo": "bar", "bool0": false, "bool1": true, "arr": [ 1, 2, 3, null, 5 ], "float": 1.2345 }

While:

$input = '{ "abc": 12, "foo": "bar", "bool0": false, "bool1": true, "arr": [ 1, 2, 3, null, 5 ], "float": 1.2345 }'; $val = json_decode($input); echo $val->abc."n";

Would produce:

12

As of version 1.0.5, json_decode takes an optional parameter, assoc (boolean), that returns an associative array instead of an object.

A PHP object correlates to a JavaScript object (associative array, i.e., key => value pairs), so the above would be referenced in JavaScript like so:

var obj = ...; /* retrieve JSON and eval() it, returning an object */ var result = obj["abc"] * obj["float"]; alert("result is " + result);

This should display an alert box with the value of result, i.e., 14.814.

What's New in This Release:

· A complete rewrite using JSON_checker as the base for the parser. · Implements the JSON specification. · Significant performance improvements on encoding. · Re-licensed under the PHP license.