Return {text} as a String where any character in {mask} is removed from the beginning and end of {text}. If {mask} is not given, {mask} is all characters up to 0x20, which includes Tab, space, NL and CR, plus the non-breaking space character 0xa0. This code deals with multibyte characters properly. Examples: echo trim(" some text ") returns "some text" echo trim(" \r\t\t\r RESERVE \t\n\x0B\xA0") . "_TAIL" returns "RESERVE_TAIL" echo trim("rm<Xrm<>X>rrm", "rm<>") returns "Xrm<>X" (characters in the middle are not removed) Can also be used as a |method|: GetText()->trim()