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I have a function that removes html, javascript and php from a text box that users of my site can write in.  The problem is when a user types
say;

hello.  My name is Danny


And I love php freaks

into my text box.  Its also removing the new line entry's. I would very much stop to stop it doing that so it looks like I have paragraphs.  Can someone please help me.  Here is how I call the function.

 $description = strip_word_html($_POST['description'], $allowed_tags = '<b><i><sup><sub><em><strong><u><br><br/><br />'); 

And the function itself with notes.


//remove html java and php
function strip_word_html($text, $allowed_tags = '<b><i><sup><sub><em><strong><u><br><br/><br />') 
    { 
        mb_regex_encoding('UTF-8'); 
        //replace MS special characters first 
        $search = array('/&lsquo;/u', '/&rsquo;/u', '/&ldquo;/u', '/&rdquo;/u', '/&mdash;/u'); 
        $replace = array('\'', '\'', '"', '"', '-'); 
        $text = preg_replace($search, $replace, $text); 
        //make sure _all_ html entities are converted to the plain ascii equivalents - it appears 
        //in some MS headers, some html entities are encoded and some aren't 
        $text = html_entity_decode($text, ENT_QUOTES, 'UTF-8'); 
        //try to strip out any C style comments first, since these, embedded in html comments, seem to 
        //prevent strip_tags from removing html comments (MS Word introduced combination) 
        if(mb_stripos($text, '/*') !== FALSE){ 
            $text = mb_eregi_replace('#/\*.*?\*/#s', '', $text, 'm'); 
        } 
        //introduce a space into any arithmetic expressions that could be caught by strip_tags so that they won't be 
        //'<1' becomes '< 1'(note: somewhat application specific) 
        $text = preg_replace(array('/<([0-9]+)/'), array('< $1'), $text); 
        $text = strip_tags($text, $allowed_tags); 
        //eliminate extraneous whitespace from start and end of line, or anywhere there are two or more spaces, convert it to one 
        $text = preg_replace(array('/^\s\s+/', '/\s\s+$/', '/\s\s+/u'), array('', '', ' '), $text); 
        //strip out inline css and simplify style tags 
        $search = array('#<(strong|b)[^>]*>(.*?)</(strong|b)>#isu', '#<(em|i)[^>]*>(.*?)</(em|i)>#isu', '#<u[^>]*>(.*?)</u>#isu'); 
        $replace = array('<b>$2</b>', '<i>$2</i>', '<u>$1</u>'); 
        $text = preg_replace($search, $replace, $text); 
        
        //some MS Style Definitions - this last bit gets rid of any leftover comments */ 
        $num_matches = preg_match_all("/\<!--/u", $text, $matches); 
        if($num_matches){ 
              $text = preg_replace('/\<!--(.)*--\>/isu', '', $text); 
        } 
        return $text; 
    } 

I want to remove empty paragraphs from an HTML document using simple_html_dom.php. I know how to do it using the DOMDocument class, but, because the HTML files I work with are prepared in MS Word, the DOMDocument's loadHTMLFile() function gives this exception "Namespaces are not defined".

This is the code I use with the DOMDocument object for HTML files not prepared in MS Word:
<?php
/* Using the DOMDocument class */

/* Create a new DOMDocument object. */
$html = new DOMDocument("1.0", "UTF-8");

/* Load HTML code from an HTML file into the DOMDocument. */
$html->loadHTMLFile("HTML File With Empty Paragraphs.html");

/* Assign all the <p> elements into the $pars DOMNodeList object. */
$pars = $html->getElementsByTagName("p");

echo "The initial number of paragraphs is " . $pars->length . ".<br />";

/* The trim() function is used to remove leading and trailing spaces as well as
* newline characters. */
for ($i = 0; $i < $pars->length; $i++){
    if (trim($pars->item($i)->textContent) == ""){
        $pars->item($i)->parentNode->removeChild($pars->item($i));
        $i--;
    }
}

echo "The final number of paragraphs is " . $pars->length . ".<br />";

// Write the HTML code back into an HTML file.
$html->saveHTMLFile("HTML File WithOut Empty Paragraphs.html");
?>

This is the code I use with the simple_html_dom.php module for HTML files prepared in MS Word:
<?php
/* Using simple_html_dom.php */

include("simple_html_dom.php");

$html = file_get_html("HTML File With Empty Paragraphs.html");

$pars = $html->find("p");

for ($i = 0; $i < count($pars); $i++) {
    if (trim($pars[$i]->plaintext) == "") {
        unset($pars[$i]);
        $i--;
    }
}

$html->save("HTML File without Empty Paragraphs.html");
?>

It is almost the same, except that that the $pars variable is a DOMNodeList when using DOMDocument and an array when using simple_html_dom.php. But this code does not work. First it runs for two minutes and then reports these errors: "Undefined offset: 1" and "Trying to get property of nonobject" for this line: "if (trim($pars[$i]->plaintext == "")) {".

Does anyone know how I can fix this?

Thank you.

I also asked on stackoverflow.

First problem fixed.
My second problem is if the result is 0X.XX,0 or 0X.XX,1 I would like to remove the first 0
The X.XX are numbers, but the 0 is not always there.

Can anyone help please
Thanks

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