rtrim

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

Syntax

rtrim ( string $str [, string $character_mask = " \t\n\r\0\x0B" ] ) : string

Parameters

str

The input string.

character_mask

You can also specify the characters you want to strip, by means of the character_mask parameter. Simply list all characters that you want to be stripped. With .. you can specify a range of characters. Without the character_mask parameter, rtrim() will strip these characters:

"\0" ASCII 0 (0x00) NUL-byte
"\t" ASCII 9 (0x09) horizontal tab
"\n" ASCII 10 (0x0A) new line (line feed)
"\v" ASCII 11 (0x0B) vertical tab
"\r" ASCII 13 (0x0D) carriage return
" " ASCII 32 (0x20) ordinary space

Return

Returns a string with whitespace stripped from the end of str.

Examples

str

<?

$str = "rtrim\0\t\n\v\r \x00\x09\x0A\x0B\x0D\x20";

$return = rtrim($str);

var_dump($str, $return);

?>
string(17) "rtrim    

     

 "
string(5) "rtrim"

character_mask | list

<?

$str = "rtrim\0\t\n\v\r \x00\x09\x0A\x0B\x0D\x20";
$character_mask = "\0\t\n\v\r im";

$return = rtrim($str, $character_mask);

var_dump($str, $return);

?>
string(17) "rtrim    

     

 "
string(3) "rtr"

character_mask | Range

<?

$str = "rtrim\0\t\n\v\r \x00\x09\x0A\x0B\x0D\x20";
$character_mask = "\x00..\x20im";

$return = rtrim($str, $character_mask);

var_dump($str, $return);

?>
string(17) "rtrim    

     

 "
string(3) "rtr"

Internal

ltrim

trim

External

PHP

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