1  
   2  <?php
   3  
   4  //Function to seperate multiple tags one line
   5  function fix_newlines_for_clean_html($fixthistext)
   6  {
   7  	$fixthistext_array = explode("\n", $fixthistext);
   8  	foreach ($fixthistext_array as $unfixedtextkey => $unfixedtextvalue)
   9  	{
  10  		//Makes sure empty lines are ignores
  11  		if (!preg_match("/^(\s)*$/", $unfixedtextvalue))
  12  		{
  13  			$fixedtextvalue = preg_replace("/>(\s|\t)*</U", ">\n<", $unfixedtextvalue);
  14  			$fixedtext_array[$unfixedtextkey] = $fixedtextvalue;
  15  		}
  16  	}
  17  	return implode("\n", $fixedtext_array);
  18  }
  19  
  20  function clean_html_code($uncleanhtml)
  21  {
  22  	//Set wanted indentation
  23  	$indent = "    ";
  24  
  25  
  26  	//Uses previous function to seperate tags
  27  	$fixed_uncleanhtml = fix_newlines_for_clean_html($uncleanhtml);
  28  	$uncleanhtml_array = explode("\n", $fixed_uncleanhtml);
  29  	//Sets no indentation
  30  	$indentlevel = 0;
  31  	foreach ($uncleanhtml_array as $uncleanhtml_key => $currentuncleanhtml)
  32  	{
  33  		//Removes all indentation
  34  		$currentuncleanhtml = preg_replace("/\t+/", "", $currentuncleanhtml);
  35  		$currentuncleanhtml = preg_replace("/^\s+/", "", $currentuncleanhtml);
  36  		
  37  		$replaceindent = "";
  38  		
  39  		//Sets the indentation from current indentlevel
  40  		for ($o = 0; $o < $indentlevel; $o++)
  41  		{
  42  			$replaceindent .= $indent;
  43  		}
  44  		
  45  		//If self-closing tag, simply apply indent
  46  		if (preg_match("/<(.+)\/>/", $currentuncleanhtml))
  47  		{ 
  48  			$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
  49  		}
  50  		//If doctype declaration, simply apply indent
  51  		else if (preg_match("/<!(.*)>/", $currentuncleanhtml))
  52  		{ 
  53  			$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
  54  		}
  55  		//If opening AND closing tag on same line, simply apply indent
  56  		else if (preg_match("/<[^\/](.*)>/", $currentuncleanhtml) && preg_match("/<\/(.*)>/", $currentuncleanhtml))
  57  		{ 
  58  			$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
  59  		}
  60  		//If closing HTML tag or closing JavaScript clams, decrease indentation and then apply the new level
  61  		else if (preg_match("/<\/(.*)>/", $currentuncleanhtml) || preg_match("/^(\s|\t)*\}{1}(\s|\t)*$/", $currentuncleanhtml))
  62  		{
  63  			$indentlevel--;
  64  			$replaceindent = "";
  65  			for ($o = 0; $o < $indentlevel; $o++)
  66  			{
  67  				$replaceindent .= $indent;
  68  			}
  69  			
  70  			$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
  71  		}
  72  		//If opening HTML tag AND not a stand-alone tag, or opening JavaScript clams, increase indentation and then apply new level
  73  		else if ((preg_match("/<[^\/](.*)>/", $currentuncleanhtml) && !preg_match("/<(link|meta|base|br|img|hr)(.*)>/", $currentuncleanhtml)) || preg_match("/^(\s|\t)*\{{1}(\s|\t)*$/", $currentuncleanhtml))
  74  		{
  75  			$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
  76  			
  77  			$indentlevel++;
  78  			$replaceindent = "";
  79  			for ($o = 0; $o < $indentlevel; $o++)
  80  			{
  81  				$replaceindent .= $indent;
  82  			}
  83  		}
  84  		else
  85  		//Else, only apply indentation
  86  		{$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;}
  87  	}
  88  	//Return single string seperated by newline
  89  	return implode("\n", $cleanhtml_array);	
  90  }
  91  ?>