How to remove scripts tags inside another code by regex

Sample text:

$text = '<b>sample</b> text with <div>tags</div>'; 

Result for strip_tags($text):

Output: sample text with tags 

Result for strip_tags_content($text):

Output: text with 

Result for strip_tags_content($text, ''):

Output: <b>sample</b> text with 

Result for strip_tags_content($text, '', TRUE);

Output: text with <div>tags</div> 

I hope that someone is useful :) source link

Simply use the PHP function strip_tags. See

http://php.net/manual/de/function.strip-tags.php

$string = "<div>hello</div>";
echo strip_tags($string);

Will output

hello

You also can provide a list of tags to keep.

==

Another approach is this:

// Load a file into $html
$html = file_get_contents('scratch.html');
$matches = [];
preg_match_all("/<\/*([^\s>]*)>/", $html, $matches);

// Have a list of all Tags only once
$tags = array_unique($matches[1]);

// Find the script index and remove it
$scriptTagIndex = array_search("script", $tags);
if($scriptTagIndex !== false) unset($tags[$scriptTagIndex]);

// Taglist must be a string containing <tagname1><tagename2>...
$allowedTags = array_map(function ($s) { return "<$s>"; }, $tags);

// Stript the HTML and keep all Tags except for removed ones (script)
$noScript = strip_tags($html,join("", $allowedTags));

echo $noScript;