sam sam - 6 months ago 44
PHP Question

gzip compression in codeigniter ajax not works

By the way, I am using codeigniter 3.0.1 and I enable the hook it works fine but it stopped all ajax calling method.Below code I have used to enable gzip compression :

$config['enable_hooks'] = TRUE;


system/application/config/hooks.php

// compress output
$hook['display_override'][] = array(
'class' => '',
'function' => 'compress',
'filename' => 'compress.php',
'filepath' => 'hooks'
);
system/application/hooks/compress.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

function compress()
{
$CI =& get_instance();
$buffer = $CI->output->get_output();

$search = array(
'/\n/', // replace end of line by a space
'/\>[^\S ]+/s', // strip whitespaces after tags, except space
'/[^\S ]+\</s', // strip whitespaces before tags, except space
'/(\s)+/s' // shorten multiple whitespace sequences
);

$replace = array(
' ',
'>',
'<',
'\\1'
);

$buffer = preg_replace($search, $replace, $buffer);

$CI->output->set_output($buffer);
$CI->output->_display();
}

Answer
function compress()
{
ini_set("pcre.recursion_limit", "16777");
$CI =& get_instance();
$buffer = $CI->output->get_output();

$re = '%# Collapse whitespace everywhere but in blacklisted elements.
(?> # Match all whitespans other than single space.
[^S ]s* # Either one [trnfv] and zero or more ws,
| s{2,} # or two or more consecutive-any-whitespace.
) # Note: The remaining regex consumes no text at all...
(?= # Ensure we are not in a blacklist tag.
[^<]*+ # Either zero or more non-"<" {normal*}
(?: # Begin {(special normal*)*} construct
< # or a < starting a non-blacklist tag.
(?!/?(?:textarea|pre|script)b)
[^<]*+ # more non-"<" {normal*}
)*+ # Finish "unrolling-the-loop"
(?: # Begin alternation group.
textarea|pre|script)b
| z # or end of file.
) # End alternation group.
) # If we made it here, we are not in a blacklist tag.
%Six';

$new_buffer = preg_replace($re, " ", $buffer);

// We are going to check if processing has working
if ($new_buffer === null)
{
$new_buffer = $buffer;
}

$CI->output->set_output($new_buffer);
$CI->output->_display();
}
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