Remove style attribute from HTML tags
The pragmatic regex (<[^>]+) style=".*?"
will solve this problem in all reasonable cases. The part of the match that is not the first captured group should be removed, like this:
$output = preg_replace('/(<[^>]+) style=".*?"/i', '$1', $input);
Match a <
followed by one or more "not >
" until we come to space
and the style="..."
part. The /i
makes it work even with STYLE="..."
. Replace this match with $1
, which is the captured group. It will leave the tag as is, if the tag doesn't include style="..."
.
Something like this should work (untested code warning):
<?php
$html = '<p style="asd">qwe</p><br /><p class="qwe">qweqweqwe</p>';
$domd = new DOMDocument();
libxml_use_internal_errors(true);
$domd->loadHTML($html);
libxml_use_internal_errors(false);
$domx = new DOMXPath($domd);
$items = $domx->query("//p[@style]");
foreach($items as $item) {
$item->removeAttribute("style");
}
echo $domd->saveHTML();
I commented on @Mayerln 's function. It does work but DOMDocument really stuffs with encoding. Here's my simplehtmldom version
function stripAttributes($html,$attribs) {
$dom = new simple_html_dom();
$dom->load($html);
foreach($attribs as $attrib)
foreach($dom->find("*[$attrib]") as $e)
$e->$attrib = null;
$dom->load($dom->save());
return $dom->save();
}
Here you go:
<?php
$html = '<p style="border: 1px solid red;">Test</p>';
echo preg_replace('/<p style="(.+?)">(.+?)<\/p>/i', "<p>$2</p>", $html);
?>
By the way, as pointed out by others, regex are not suggested for this.
I use this:
function strip_word_html($text, $allowed_tags = '<a><ul><li><b><i><sup><sub><em><strong><u><br><br/><br /><p><h2><h3><h4><h5><h6>')
{
mb_regex_encoding('UTF-8');
//replace MS special characters first
$search = array('/‘/u', '/’/u', '/“/u', '/”/u', '/—/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);
//on some of the ?newer MS Word exports, where you get conditionals of the form 'if gte mso 9', etc., it appears
//that whatever is in one of the html comments prevents strip_tags from eradicating the html comment that contains
//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);
}
$text = preg_replace('/(<[^>]+) style=".*?"/i', '$1', $text);
return $text;
}