## 例

`

     string rtrim ( string $str [, string $charlist ] )

`

## 説明

This function returns a string with whitespace stripped from the end of str. Without the second parameter, rtrim() will strip these characters: " " (ASCII 32 (0x20)), an ordinary space. "\t" (ASCII 9 (0x09)), a tab. "\n" (ASCII 10 (0x0A)), a new line (line feed). "\r" (ASCII 13 (0x0D)), a carriage return. "\0" (ASCII 0 (0x00)), the NUL-byte. "\x0B" (ASCII 11 (0x0B)), a vertical tab.

## 戻り値

Returns the modified string.