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8.2

PHP GZIP compression not working on Firefox, how come?

Asked by iamnatio in Firefox Web Browser, Internet Explorer Web Browser, PHP Scripting Language

Tags: gzip, firefox, compression, php

Hello,

On one of my sites I am using PHP GZIP compression. For more users using Firefox or IE it works fine, however there is a select few where it does not work. Why is that? They are using the latest version of Firefox however it still does not work for them. Is there a setting they can maybe enable? Or is it because they are behind a firewall?

Any help would be appreciated. I have also attached the GZIP code I am using. 
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function doGzip($content, $sHeader, $iLevel = 9)
{	
	$expiresOffset = 3600 * 24 * 10;
	$supportsGzip = false;
 
	header("Content-type: text/" . $sHeader);
	header("Vary: Accept-Encoding");  
	header("Expires: " . gmdate("D, d M Y H:i:s", time() + $expiresOffset) . " GMT");
 
	if (isset($_SERVER['HTTP_ACCEPT_ENCODING']))
	{
		$encodings = explode(',', strtolower(preg_replace("/\s+/", "", $_SERVER['HTTP_ACCEPT_ENCODING'])));
	}
 
	if ((in_array('gzip', $encodings) || in_array('x-gzip', $encodings) || isset($_SERVER['---------------'])) && function_exists('ob_gzhandler') && !ini_get('zlib.output_compression')) 
	{
		$enc = in_array('x-gzip', $encodings) ? "x-gzip" : "gzip";
		$supportsGzip = true;
	}
 
	if ($supportsGzip)
	{
		$content = gzencode($content, $iLevel, FORCE_GZIP);	
		header("Content-Encoding: " . $enc);
	}
 
	echo $content;
	exit;
}
[+][-]12/17/07 08:55 PM, ID: 20490078Accepted Solution

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About this solution

Zones: Firefox Web Browser, Internet Explorer Web Browser, PHP Scripting Language
Tags: gzip, firefox, compression, php
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Solution Provided By: poisa
Participating Experts: 2
Solution Grade: A
 
[+][-]12/11/07 12:30 PM, ID: 20452437Expert Comment

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