What are common mistakes or pitfalls when working with JSON data in PHP?
One common mistake when working with JSON data in PHP is not properly decoding or encoding the data. Make sure to use `json_decode()` when working with JSON strings to convert them into PHP arrays or objects, and `json_encode()` when converting PHP arrays or objects into JSON strings.
// Incorrect way to decode JSON data
$jsonString = '{"name": "John", "age": 30}';
$data = $jsonString; // This assigns the JSON string itself, not the decoded data
// Correct way to decode JSON data
$jsonString = '{"name": "John", "age": 30}';
$data = json_decode($jsonString, true); // Use true as the second parameter to decode into an associative array