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rtrim

PHP function Edit on GitHub ✎

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

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

Description

rtrim(string $string, string $characters = " \f\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:

Characters

Parameters

string: The input string.
characters: Optional

Return Values

Returns the modified string.

Changelog

Version	Description
8.6.0	The form feed character (`"\f"`) was added to the default value of `characters`.

Examples

Usage example of rtrim()

php

<?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:

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"