JSON
Installing/Configuring
JSON
PHP Manual

# Introduction

This extension implements the » JavaScript Object Notation (JSON) data-interchange format. The decoding is handled by a parser based on the JSON_checker by Douglas Crockford.

> Note:

> PHP implements a superset of JSON as specified in the original » RFC 4627 - it will also encode and decode scalar types and `NULL`. RFC 4627 only supports these values when they are nested inside an array or an object.

> Although this superset is consistent with the expanded definition of "JSON text" in the newer » RFC 7159 (which aims to supersede RFC 4627) and » ECMA-404, this may cause interoperability issues with older JSON parsers that adhere strictly to RFC 4627 when encoding a single scalar value.

JSON
Installing/Configuring
JSON
PHP Manual