HTML Code richtig kürzen

<(.*?)( .*?>|>)

<(.*?)( .*?^/>|>)

<?php
class StackImplementation {
    private $array = array();
    
    
    public function __construct() {
    }
    
    
    public function push($elm) {
        $this->array[] = $elm;
    } 
    
   public function pop($elm) {        
        for($i=count($this->array)+1; $i>=0; $i--) {                
            if($this->array[$i] == str_replace("/", "", $elm)) {
                unset($this->array[$i]);            
                return;
            }
        }      
      
    }
    
    public function printArray() {
        print_r($this->array);
    }
    
    
}


$stack = new StackImplementation();
$text = "<pr>Das ist ein <pr>Absatz<p> </p><a href='#'>Link</a>";

preg_match_all("/\<.[^ >]*/", $text, $result);



for($i=0; $i<count($result[0]); $i++) {
    if(preg_match("/^\<[^\/].?[^ >]*$/", $result[0][$i])) {      
        $stack->push($result[0][$i].">");
    }
    else {
        $stack->pop($result[0][$i].">");
    }
}

$stack->printArray();



?>

if (preg_match_all ('~<(.*?)(>| (.*?)>)~s', $text, $match)){
	$aStack = array();
	for ($i = 0; $i < count($match[0]); $i++){
		if (substr($match[1][$i], 0, 1) != "/"){
			$aStack[$match[1][$i]]++;
			if (substr($match[3][$i], -1, 1) == "/") $aStack[$match[1][$i]]--;
		}else{
			$aStack[str_replace("/", "", $match[1][$i])]--;
		}
	}
	
	foreach ($aStack as $tag => $count){
		if ($count > 0){
			preg_match('~(.*?)<'.$tag.'~s', $text, $match);
			$text = $match[1];
			break;
		}
	}
}

style="list-style-type: disc"

style="color: #009900"

<span class="1;">

.1{
color: #009900;
}