What is JSON?
Since the JSON format is a text-based format, it can easily be sent to and from a server, and used as a data format by any programming language.
PHP and JSON
PHP has some built-in functions to handle JSON.
First, we will look at the following two functions:
PHP - json_encode()
The json_encode() function is used to encode a value to JSON format.
PHP - json_decode()
The json_decode() function is used to decode a JSON object into a PHP object or an associative array.
The json_decode() function returns an object by default. The json_decode() function has a second parameter, and when set to true, JSON objects are decoded into associative arrays.
PHP - Accessing the Decoded Values
Here are two examples of how to access the decoded values from an object and from an associative array:
PHP - Looping Through the Values
You can also loop through the values with a foreach() loop: