w3resource
PHP Tutorial

PHP: rtrim() function

Description

The rtrim() function is used to remove the whitespaces and other predefined characters from the right side of a string.

Version:

(PHP 4 and above)

Syntax:

rtrim(string_name, char_list)

Parameter:

Name Description Required /
Optional
Type
string_name The string that will be trimmed. Required String
char_list Specifies which character to remove from the string. Without this parameter, the function removs the following characters.
" " an ordinary space
"\0" - the NUL-byte
\t" - tab
\n" - line feed
\x0B" - a vertical tab
"\r" - a carriage return
Optional String

Return value:

Returns the modified string.

Value Type: String.

Pictorial Presentation

php-string-rtrim()

Example:

<?php
$text1="w3resource.com  ";
$text2="w3resource.com\t\t";
$text3="\t\tw3resource.com\x0A";
$text4="Good Morning"; 
$trimmed_text=rtrim($text1);
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text2);
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text3);
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text1,'w3');
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text4,"ng");
var_dump($trimmed_text);
?>

Output :

string(14) "w3resource.com"
string(14) "w3resource.com"
string(16) "w3resource.com"
string(16) "w3resource.com"
string(10) "Good Morni"

View the example in the browser

See also

PHP Function Reference

Previous: quotemeta
Next: sha1_file