Snippets Html
Html
untag - gets the content from any given tag
by: Michael Baas
|
April 27, 2005
Version: 1.1
Type: Function
Category: HTML
License: GNU General Public License
Description: This function extracts the content from any given tag and returns it as a string or an array (if there is more than one occurance of the tag in the string). It's a bit like a step toward an xpath functionality and very good for cleaning up HTML and getting XML data.
<?
// DEMO
echo"Example:<br><br>";
$string='
<mode>one</mode>
<mode>two
</mode>
';
echo "untag(\$string,\"mode\",0)<br>".untag($string,"mode",0)."<br><br>";
$alltags=untag($string,"mode",1);
echo "untag(\$string,\"mode\",1)<br><br>";
foreach ($alltags as $disp){
echo $disp."<br>";
}
// DEMO END
/*
Function untag($string,$tag,mode){
written by Chris Heilmann (info@onlinetools.org)
filters the content of tag $tag from $string
when mode is 1 the content gets returned as an array
otherwise as a string
*/
function untag($string,$tag,$mode){
$tmpval="";
/* $preg="/<".$tag.>(.*?)<\/".$tag.">/si";
* 2005-04-27: preg modified by Michael Baas (http://mbaas.de)
* so that it would also work when parameters are specified within the
* tag (as in <body bgcolor=..> etc.)
* Also changed sep-char so that it does not need to be escaped within the string.
* BTW: I'm quite new to regex and I did this with the help of RegExBuddy
* http://mbaas.de/links/view/onecat/Links%20|%20Software%20|%20RegEx/RegexBuddy/*/
* which is very helpful to debug+understand regex's :)
*/
$preg = "|<" . $tag . "[^>]*>(.*?)</" . $tag . ">|si";
preg_match_all($preg,$string,$tags);
foreach ($tags[1] as $tmpcont){
if ($mode==1){$tmpval[]=$tmpcont;}
else {$tmpval.=$tmpcont;}
}
return $tmpval;
}
?>
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