出现了一个小脚本。
如果您现在想使 Xoops 中的 IE PNG 透明性工作，请执行以下操作。
1) 将上述代码保存为 site 根目录下的 functions.php。
2) 在同一位置打开 header.php，并在文件开头添加以下代码
3) 在同一位置打开 footer.php，并在文件末尾添加以下代码
就这样。一切都完成了。现在您的 Xoops 网站已经为 IE 启用了 PNG 透明性。
/*
* replacePngTags - Justin Koivisto [W.A. Fisher Interactive] 7/1/2003 10:45AM
* Modified: 4/14/2004 9:38AM
*
* Modifies IMG and INPUT tags for MSIE5+ browsers to ensure that PNG-24
* transparencies are displayed correctly. Replaces original SRC attribute
* with a transparent GIF file (spacer.gif) that is located in the same
* directory as the orignal image, and adds the STYLE attribute needed to for
* the browser. (Matching is case-insensitive. However, the width attribute
* should come before height.
*
* Also replaces code for PNG images specified as backgrounds via:
* background-image: url('image.png'); When using PNG images in the background,
* there is no need to use a spacer.gif image. (Only supports inline CSS at
* this point.)
*
* @param $x String containing the content to search and replace in.
* @result Returns the modified string.
*/
function replacePngTags($x){
$arr2=array();
// make sure that we are only replacing for the Windows versions of Internet
// Explorer 5+
$msie='/msies([5-9]).?[0-9]*.*(win)/i';
if(!isset($_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
preg_match_all('/<(input|img).*src=(\'|\")(.*.png)2.*>/Ui',$x,$images);
for($num_images=0;$num_images$images[0]);$num_images++){
$original=$images[0][$num_images];
$quote=$images[2][$num_images];
$atts=''; $width=0; $height=0;
// If the size is defined by styles, find
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,'',$original));
}
// size was not defined by styles, get values
preg_match_all('/width=(\'|\")?([0-9%]+)\1/i',$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],'',$original);
}
preg_match_all('/height=(\'|\")?([0-9%]+)\1?/i',$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],'',$modified);
}
preg_match_all('/src=(\'|\")([^"]+.png)\1/i',$images[0][$num_images],$arr2);
if(isset($arr2[2][0]) && !empty($arr2[1][0]))
$image=$arr2[2][0];
else
$image=NULL;
// We do this so that we can put our spacer.gif image in the same
// directory as the image
$tmp=split('[\/]',$image);
array_pop($tmp);
$image_path=join('/',$tmp);
if(strlen($image_path)) $image_path.='/';
// end quote is already supplied by originial src attribute
$replace_src_with=$image_path.'spacer.gif'.$quote.' style="width: '.$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;
}
?> 如果您现在想使 Xoops 中的 IE PNG 透明性工作，请执行以下操作。
1) 将上述代码保存为 site 根目录下的 functions.php。
2) 在同一位置打开 header.php，并在文件开头添加以下代码
include_once XOOPS_ROOT_PATH.'/function.php';
ob_start(); 3) 在同一位置打开 footer.php，并在文件末尾添加以下代码
$x=ob_get_contents();
ob_end_clean();
echo replacePngTags($x); 就这样。一切都完成了。现在您的 Xoops 网站已经为 IE 启用了 PNG 透明性。
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