vb.org Archive - vB Integration of "Normal display of PNG Alpha Transparency with MSIE" PHP script

I understand ! Natch has updated his first version of his hack.

Here is the old one :

Code:

// PNG-24 Alpha Transparency with MSIE

/* ***

* replacePngTags - Justin Koivisto [W.A. Fisher Interactive] 7/1/2003 10:45AM

* function to IE display of PNG transparencies - integrated to vB3 by Natch@mobileforces.org

* *** */

function replacePngTags($x,$img_path='/forum/images/')

{

        $arr2=array();

        // make sure that we are only replacing for the Windows versions of Internet

        // Explorer 5+

        $msie='/msie\s([5-9])\.?[0-9]*.*(win)/i';

        if(!isset($_SERVER['HTTP_USER_AGENT']) ||

                !preg_match($msie,$_SERVER['HTTP_USER_AGENT']) ||

                preg_match('/opera/i',$_SERVER['HTTP_USER_AGENT']))

                return $x;



        // find all the png images in backgrounds

        preg_match_all('/background-image:\s*url\(\'(.*\.png)\'\);/Uis',$x,$background);

        for($i=0;$i<count($background[0]);$i++){

                // simply replace:

                //  "background-image: url('image.png');"

                // with:

                //  "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(

                //      enabled=true, sizingMethod=scale src='image.png');"

                // haven't tested to see if background-repeat styles work...

                $x=str_replace($background[0][$i],'filter:progid:DXImageTransform.'.

                        'Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale'.

                        ' src=\''.$background[1][$i].'\');',$x);

        }



        // OK, time to find all the IMG tags with ".png" in them

        $pattern='/<(input|img)[^>]*src=(\\\'|\\")([^>]*\.png)\2[^>]*>/i';

        preg_match_all($pattern,$x,$images);

        for($num_images=0;$num_images<count($images[0]);$num_images++){

                $original=$images[0][$num_images];

                $quote=$images[2][$num_images];

                $atts=''; $width=0; $height=0; $modified=$original;



                // If the size is defined by styles, find them

                preg_match_all(

                        '/style=(\\\'|\\").*(\s?width:\s?([0-9]+(px|%));).*'.

                        '(\s?height:\s?([0-9]+(px|%));).*\\1/Ui',

                        $images[0][$num_images],$arr2);

                if(is_array($arr2) && count($arr2[0])){

                        // size was defined by styles, get values

                        $width=$arr2[3][0];

                        $height=$arr2[6][0];



                        // remove the width and height from the style

                        $stripper=str_replace(' ','\s','/('.$arr2[2][0].'|'.$arr2[5][0].')/');

                        // Also remove any empty style tags

                        $modified=preg_replace(

                                '`style='.$arr2[1][0].$arr2[1][0].'`i',

                                '',

                                preg_replace($stripper,'',$modified));

                }



                // size was not defined by styles, get values from attributes

                preg_match_all('/width=(\\\'|\\")?([0-9%]+)\\1/i',$images[0][$num_images],$arr2);

                if(is_array($arr2) && count($arr2[0])){

                        $width=$arr2[2][0];

                        if(is_numeric($width))

                                $width.='px';



                        // remove this from the tag

                        $modified=str_replace($arr2[0][0],'',$modified);

                }

                preg_match_all('/height=(\\\'|\\")?([0-9%]+)\\1?/i',$images[0][$num_images],$arr2);

                if(is_array($arr2) && count($arr2[0])){

                        $height=$arr2[2][0];

                        if(is_numeric($height))

                                $height.='px';



                        // remove this from the tag

                        $modified=str_replace($arr2[0][0],'',$modified);

                }



                // if either height or width were left out, son't replace this image this allows

                // the image to show up (not fixed) instead of not displaying the image at all

                if($width==0 || $height==0)

                        continue;



                preg_match_all('/src=(\\\'|\\")([^\"]+\.png)\\1/i',$images[0][$num_images],$arr2);

                if(isset($arr2[2][0]) && !empty($arr2[1][0]))

                        $image=$arr2[2][0];

                else

                        $image=NULL;



                if(!empty($img_path)){

                        // We do this so that we can put our spacer.png image in the same

                        // directory as the image

                        $tmp=split('[\\/]',$image);

                        array_pop($tmp);

                        $img_path=join('/',$tmp);

                        if(strlen($img_path)) $img_path.='/';

                }



                // end quote is already supplied by originial src attribute

                $replace_src_with=$img_path.'spacer.png'.$quote.' style="width: '.$width.

                        '; height: '.$height.'; filter: progid:DXImageTransform.'.

                        'Microsoft.AlphaImageLoader(src=\''.$image.'\', sizingMethod='.

                        '\'scale\');"';



                // now create the new tag from the old

                $new_tag=str_replace($image.$quote,$replace_src_with,

                        str_replace('  ',' ',$modified));

                // now place the new tag into the content

                $x=str_replace($original,$new_tag,$x);

                $i++;

        }

        return $x;

}

// /PNG-24 Alpha Transparency with MSIE

X vBulletin 3.8.12 by vBS Debug Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (1)bbcode_code_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (3)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (10)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages:

X vBulletin 3.8.12 by vBS Debug Information

Page Generation 0.05429 seconds
Memory Usage 1,769KB
Queries Executed 10 (?)

More Information

Template Usage:

(1)ad_footer_end
(1)ad_footer_start
(1)ad_header_end
(1)ad_header_logo
(1)ad_navbar_below
(1)bbcode_code_printable
(1)footer
(1)gobutton
(1)header
(1)headinclude
(6)option
(1)pagenav
(1)pagenav_curpage
(3)pagenav_pagelink
(1)post_thanks_navbar_search
(1)printthread
(10)printthreadbit
(1)spacer_close
(1)spacer_open

Phrase Groups Available:

global
postbit
showthread

Included Files:

./printthread.php
./global.php
./includes/init.php
./includes/class_core.php
./includes/config.php
./includes/functions.php
./includes/class_hook.php
./includes/modsystem_functions.php
./includes/class_bbcode_alt.php
./includes/class_bbcode.php
./includes/functions_bigthree.php

Hooks Called:

init_startup
init_startup_session_setup_start
init_startup_session_setup_complete
cache_permissions
fetch_threadinfo_query
fetch_threadinfo
fetch_foruminfo
style_fetch
cache_templates
global_start
parse_templates
global_setup_complete
printthread_start
pagenav_page
pagenav_complete
bbcode_fetch_tags
bbcode_create
bbcode_parse_start
bbcode_parse_complete_precache
bbcode_parse_complete
printthread_post
printthread_complete

Messages:

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.05429 seconds Memory Usage 1,769KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (1)bbcode_code_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (3)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (10)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages: