rtrim

Definition and usage

rtrim() function removes whitespace characters or other predefined characters to the right of the string.

Related functions:

• ltrim() - Removes whitespace or other predefined characters to the left of the string
• trim() - Remove whitespace or other predefined characters on both sides of the string

Example

Example 1

Remove characters from the right side of the string:

 <?php
$str = "Hello World!" ;
echo $str . "<br>" ;
echo rtrim ( $str , "World!" ) ;
?>

Try it yourself

Example 2

Remove the space to the right of the string:

 <?php
$str = "Hello World!" ;
echo "Don't use rtrim:" . $str ;
echo "<br>" ;
echo "Use rtrim:" . rtrim ( $str ) ;
?>

The HTML output of the above code is as follows (see the source code):

 < ! DOCTYPE html >
< html >
< body >

Don't use rtrim: Hello World ! < br > Use rtrim: Hello World !
< / body >
< / html >

The browser output of the above code:

 Don't use rtrim: Hello World!
Use rtrim: Hello World!

Try it yourself

Example 3

Remove the newline character (\n) to the right of the string:

 <?php
$str = "Hello World!\n\n\n" ;
echo "Don't use rtrim:" . $str ;
echo "<br>" ;
echo "Use rtrim:" . rtrim ( $str ) ;
?>

The HTML output of the above code is as follows (see the source code):

 < ! DOCTYPE html >
< html >
< body >

Don't use rtrim: Hello World !


< br > Use rtrim: Hello World !
< / body >
< / html >

The browser output of the above code:

 Don't use rtrim: Hello World!
Use rtrim: Hello World!

Try it yourself

grammar

 rtrim ( string , charlist )