removing new lines except in

Question

I want to remove new lines from some html (with php) except in

 tags where whitespace is obviously important.

             


        

Answer 1

It may be 3 years later, but... The following code will remove all line breaks and whitespace at long as it is outside of pre tags. Cheers!

function sanitize_output($buffer)
{
    $search = array(
        '/\>[^\S ]+/s', //strip whitespaces after tags, except space
        '/[^\S ]+\',
        '<',
        '\\1'
        );

    $blocks = preg_split('/(<\/?pre[^>]*>)/', $buffer, null, PREG_SPLIT_DELIM_CAPTURE);
    $buffer = '';
    foreach($blocks as $i => $block)
    {
      if($i % 4 == 2)
        $buffer .= $block; //break out 
...
 with \n's
      else 
        $buffer .= preg_replace($search, $replace, $block);
    }

    return $buffer;
}

ob_start("sanitize_output");