HTML compression in PHP [Archive]

View Full Version : HTML compression in PHP

infinite

07-17-2002, 06:33 AM

Hi!

Has anyone used a tool called Absolute HTML compressor? It's a windoze program that reduces a HTML file down by 10-20%, by removing extra white space, and unecessary new lines.

I was wondering if anyone has used or developed a PHP function that achives a similar result?

Cheers,
Infinite ;)

Starhost

07-17-2002, 07:34 AM

If you ad ob_gzhandler to yout php.ini all PHP prased pages will be automatially compressed by gzip if the clients browser supports it.

; You can redirect all of the output of your scripts to a function. For
; example, if you set output_handler to "ob_gzhandler", output will be
; transparently compressed for browsers that support gzip or deflate encoding.
; Setting an output handler automatically turns on output buffering.
;output_handler =
output_handler = ob_gzhandler

infinite

07-17-2002, 07:53 AM

Originally posted by Starhost
If you ad ob_gzhandler to yout php.ini all PHP prased pages will be automatially compressed by gzip if the clients browser supports it.

Thanks for the tip Starhost ;), but gzip compression is already enabled, I'd just like to see if I can compress the HTML before gzip does, so if the browser won't support gzip, it will still be slightly compressed :D

Also, I guess gzip would compress a HTML page more, that's been compressed/optimised already?

Cheers,
Infinite :)

esdjco

07-18-2002, 12:51 AM

Hmm thats interesting...Id like to know if anyone has used this tool as well.

infinite

07-18-2002, 12:47 PM

This is what I've got so far, it removes line returns, and multiple white space.
Would anyone know how to remove HTML comment tags? :D
<?php

function callback($buffer) {

// Strip newlines and extra white space,
// not yet sensitive to textarea tags

$search = array ("'([\r\n])+'", // Strip out newlines
"'[\s][\s]'"); // Strip out multiple white spaces

$replace = array ("",
"",
"");

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

}

ob_start("callback");

?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<body>
Test page
<BR>

<BR>

ho ho ho !</body>

</html>
<?php

ob_end_flush();

?>

I've had a go at removing  tags, but with no result so far, any help is much appreciated ;)

The above code brings my homepage down by 3%, not much, but the results will be much better on larger pages :D

TIA,
Infinite :)

infinite

07-18-2002, 12:55 PM

Originally posted by esdjco
Hmm thats interesting...Id like to know if anyone has used this tool as well.

The tool actually does more than I want, this is what is listed in the help file

Merge lines.
Remove unnecessary whitespace characters.
Remove unnecessary quotation marks. For example, <table BORDER="0" CELLSPACING="0" CELLPADDING="0" align="center"> will be converted to <table BORDER=0 CELLSPACING=0 CELLPADDING=0 align=center>.
Replace some tags with the short ones - replace STRIKE tags with S, STRONG with B and EM with I.
Remove HTML comments. The comments within the scripts and styles aren't removed.
Remove <!DOCTYPE ...> tags.
Remove meta tags. You can specify names of the meta tags to remove.
Create backups. If this option is ON backups of the optimized files are created in a new folder.

But I don't want to remove all of these, just line returns and white space (and HTML comments) ;)

Cheers,
Infinite :)