Codeigniter Rest Server fail to output longer JSON - php

Question

Does anybody know why
$this-response($somearray, 200);
Can't output a long JSON? (Or long arrays)
For example I can output DB result if I limit query to last 10 rows but if I limit it to 100
JSON gets trimed and in my client app I get 'unexpected end of input'. If I change above statement in simple
echo json_encode($somearray);
It works flawlessly.
I am sorry. I need to clarify my question. I am using
https://github.com/chriskacerguis/codeigniter-restserver
function transits_get()
{
$sessionId = $this->input->get_request_header('Sessionid', TRUE);
$transits = $this->Transit_model->get_transits( $sessionId );
if($transits)
{
//$this->output->set_content_type('application/json');
//$this->output->set_output(json_encode($transits)); //works
//echo json_encode($transits); //works
$this->response($transits, 200); // 200 being the HTTP response code //Does not work
}
else
{
$this->response(array('error' => 'There is no transit records in the database!'), 404);
}
}

Answer 1

Alright, I've found what was the problem.
I simply commented out the code in REST_controller that sets content length.
Now it works but I am still wondering why strlen($output) is not as same length as output JSON for larger JSON files and it is ok for short ones.
// If zlib.output_compression is enabled it will compress the output,
// but it will not modify the content-length header to compensate for
// the reduction, causing the browser to hang waiting for more data.
// We'll just skip content-length in those cases.
if ( ! $this->_zlib_oc && ! $this->config->item('compress_output')) {
//header('Content-Length: ' . strlen($output));
}

Answer 2

This works for me, and I have lots of JSON data (+- 250 records):
$this->output->set_content_type('application/json');
$this->output->set_output(json_encode($data));
As found in this article, you can do the following:
Open REST_Controller.php
Locate and delete the following code (at the end of the response function):
if ( ! $this->_zlib_oc && ! $CFG->item('compress_output')) {
header('Content-Length: ' . strlen($output));
}

Answer 3

In libraries folder, line no. 267 of REST_Controller.php file, comment the following code. it's working.
header('Content-Length: ' . strlen($output));