How can variables within a string be properly output in PHP when reading from a JSON file?

When reading variables from a JSON file in PHP, you can use double quotes to properly output variables within a string. By enclosing the variable in curly braces within the string, PHP will interpret it as a variable and replace it with its value. This allows you to dynamically insert variables from the JSON file into your output.

// Read JSON file
$jsonData = file_get_contents('data.json');
$data = json_decode($jsonData, true);

// Output variable within a string
$name = $data['name'];
echo "Hello, my name is {$name}.";