FILTER_SANITIZE_SPECIAL_CHARS function

[vividona]

I am using this function

 

function sanitPostInput($runpost) {
      return filter_input(INPUT_POST, $runpost, FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_STRIP_LOW);
}

 

It works fine with html characters but in (line break) it convert nothing. not even the converted symbol characters in spite that I am using nl2br function.

 

note: when I check page source I found all converted characters but line break is not there