How to determine whether a string is valid JSON?
If you are using the built in json_decode PHP function, json_last_error returns the last error (e.g. JSON_ERROR_SYNTAX when your string wasn’t JSON). Usually json_decode returns null anyway.
If you are using the built in json_decode PHP function, json_last_error returns the last error (e.g. JSON_ERROR_SYNTAX when your string wasn’t JSON). Usually json_decode returns null anyway.