PHP JSON Arrays: Complete How-To Guide

In PHP, you can define a JSON array by using the json_encode() function to convert a PHP array into JSON format. For example:

<?php
$phpArray = array('name' => 'John', 'age' => 30, 'city' => 'New York');
$jsonArray = json_encode($phpArray);

echo $jsonArray;
?>

The above code will convert the PHP array $phpArray into a JSON array and output the result {“name”:”John”,”age”:30,”city”:”New York”}.