PHP FILTER_SANITIZE_STRING Filter

The FILTER_SANITIZE_STRING filter removes tags and remove or encode special characters from a string.

Possible options and flags : -

  • FILTER_FLAG_NO_ENCODE_QUOTES - Do not encode quotes
  • FILTER_FLAG_STRIP_LOW - Remove characters with ASCII value < 32
  • FILTER_FLAG_STRIP_HIGH - Remove characters with ASCII value > 127
  • FILTER_FLAG_ENCODE_LOW - Encode characters with ASCII value < 32
  • FILTER_FLAG_ENCODE_HIGH - Encode characters with ASCII value > 127
  • FILTER_FLAG_ENCODE_AMP - Encode the "&" character to &

    • Example -

    Remove all HTML tags and all characters with ASCII value > 127, from a string : -

    Example -