Strip whitespace (or other characters) from the end of a string

- « quotemeta

- setlocale »

- PHP Manual
- String Functions
- Strip whitespace (or other characters) from the end of a string

# rtrim

(PHP 4, PHP 5, PHP 7, PHP 8)

rtrim — Strip whitespace (or other characters) from the end of a string

### Description

rtrim(string `$string`, string `$characters` = " \n\r\t\v\x00"): string

This function returns a string with whitespace (or other characters) stripped from the end of `string`.

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 `NULL`-byte.
- "\v" (ASCII `11` (`0x0B`)), a vertical tab.

### Parameters

`string`

  The input string.

`characters`

  You can also specify the characters you want to strip, by means of the `characters` parameter. Simply list all characters that you want to be stripped. With `..` you can specify a range of characters.

### Return Values

Returns the modified string.

### Examples

Example #1 Usage example of rtrim()

    <?php$text = "\t\tThese are a few words :) ...  ";$binary = "\x09Example string\x0A";$hello  = "Hello World";var_dump($text, $binary, $hello);print "\n";$trimmed = rtrim($text);var_dump($trimmed);$trimmed = rtrim($text, " \t.");var_dump($trimmed);$trimmed = rtrim($hello, "Hdle");var_dump($trimmed);// trim the ASCII control characters at the end of $binary// (from 0 to 31 inclusive)$clean = rtrim($binary, "\x00..\x1F");var_dump($clean);?>

The above example will output:

    string(32) "        These are a few words :) ...  "
    string(16) "    Example string
    "
    string(11) "Hello World"

    string(30) "        These are a few words :) ..."
    string(26) "        These are a few words :)"
    string(9) "Hello Wor"
    string(15) "    Example string"

### See Also

- trim() - Strip whitespace (or other characters) from the beginning and end of a string
- ltrim() - Strip whitespace (or other characters) from the beginning of a string