README.md

The jsonld_encode() function on PHP

Encodes an object or an array into JSON-LD format

Problem

JSON-LD uses the at '@' character as part of the JSON key naming convention.

Algorithm

Use 2 underscores '__' as a temporary namespace for naming object keys in PHP. Then, the jsonld_encode() will take care of making it an at character '@'.

Syntax

jsonld_encode( $variable )

Example

<?php
  $data = new stdClass();
  $data->__context = "http://schema.org";
  $data->__type = "Thing";
  $data->name = "Tardigrade";
  $data->description = "A cuddly microscopic extremophile that looks like a bear";

  echo jsonld_encode( $data );
?>

Output

{
  "@context": "http://schema.org",
  "@type": "Thing",
  "name": "Tardigrade",
  "description": "A cuddly microscopic extremophile that looks like a bear"
}

jsonld_encode.php

function jsonld_encode($variable){
  $initial = json_encode($variable);
  return str_replace("__","@", $initial);
}