A regular that replaces forbidden characters?

Question

Regular Expressions

octets 0-32 (0-20 hex), "\", """, "&", "<", ">", "[", "]", "^", "`", "{" , "|", "}", "~", octets 127-255 (7F-FF hex)

Is there a regular expression somewhere that replaces the above characters with "%" or "_"?

Answer 1

Just escape the slash and the closing bracket, paste the rest
[\x0-\x20\\"&<>[\]^`{|}~\x7F-\xFF]+
https://regex101.com/r/iutiMk/3

which replaces

forced to dispel your misconception: regular expressions do not replace anything, they look for text. Replace functions like preg_replace()