Is there any memory limit for json_encode() method?

Question

I am trying to echo a json-encoded array which consist of an array but i dont know it is not letting me print that thing. Here\'s my code:

Answer 1

Simply Use json_decode() you will get the result you need..

   $array = json_decode($json, true);
   echo "<pre>"; print_r($array);

Array
(
    [0] => Array
        (
            [Status] => 1
            [NewRecord] => Array
                (
                    [fname] => xyz
                    [lname] => abc
                    [gender] => male
                )

        )

    [1] => Array
        (
            [Status] => 1
            [NewRecord] => Array
                (
                    [fname] => 123
                    [lname] => 456
                    [gender] => male
                )

        )

    [2] => Array
        (
            [Status] => 1
            [NewRecord] => Array
                (
                    [fname] => demo
                    [lname] => vvv
                    [gender] => female
                )

        )

)

Answer 2

Stab into the dark: some of your database rows contain non-ASCII characters (e.g. ü, é and such). Your database connection is set to latin1, so the data is not UTF-8 encoded. json_encode requires UTF-8 encoded data. If you fetch enough rows, there will be rows with such non-UTF-8 data in there, and json_encode fails. With few enough rows you happen to not hit those problematic rows.

Test this by outputting echo json_last_error_msg(); after json_encode.

Set your database connection to UTF-8. See here how to do so: UTF-8 all the way through

The reason why your browser complains about invalid JSON when you include a print_r is simple: because then PHP outputs a lot of garbage which isn't JSON, which the browser can't decode as JSON.