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"): stringThis 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)), theNULL-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
charactersparameter. 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"
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https://www.php.net/manual/en/function.rtrim.php