Small function to remove HTML tags and javascript code

function trip_html( $html, $len ) {
// $html should contain an HTML document.
// This example will remove HTML tags, javascript code
// and whitespace characters. Some common
// HTML entities will also be converted into corresponding text.
$search = array (“']*?>.*?'si”, // Remove javascript
“'<[/!]*?[^< ;>]*?>'si", // Remove HTML tags
"'([rn])[s]+'", // Remove whitespace characters
"'&(quot|#34);'i ", // Replace HTML entity
"'&(amp|#38);'i",
"'&(lt|#60);'i",
"'&(gt|#62);'i ",
"'&(nbsp|#160);'i",
"'&(iexcl|#161);'i",
"'&(cent|#162);'i",
"' &(pound|#163);'i",
"'&(copy|#169);'i",
"'(d+);'e"); // Run as PHP code
$replace = array ("",
"",
"\1",
""",
"&",
"<",
">",
" ",
chr(161),
chr (162),
chr(163),
chr(169),
"chr(\1)");
$text = preg_replace ($search, $replace, $html);
$text = trim($text );
return mb_strlen($text) >= $len ? mb_substr($text, 0, $len) : ”;
}
?>