How can one remove unnecessary whitespaces (Space, NL, CR, TAB) outside of HTML tags in PHP?

Unnecessary whitespaces outside of HTML tags can be removed in PHP by using regular expressions to match and replace them. This can be achieved by using the `preg_replace` function with a regex pattern that targets whitespaces not within HTML tags. By applying this regex pattern, we can effectively strip out any unwanted whitespaces from the HTML content. 

$html = "<div>    Hello,   World!   </div>";
$cleaned_html = preg_replace('/\s+(?=[^<>]*>)/', '', $html);
echo $cleaned_html;

Keywords

PHP regular expressions preg_replace HTML tags whitespace

Related Questions