RTRIM(3) 1 RTRIM(3)
rtrim - Strip whitespace (or other characters) from the end of a string
SYNOPSIS
string rtrim (string $str, [string $character_mask])
DESCRIPTION
This function returns a string with whitespace stripped from the end of $str.
Without the second parameter, rtrim(3) will strip these characters:
o " " (ASCII
32 ( 0x20)), an ordinary space.
o " " (ASCII
9 ( 0x09)), a tab.
o "
" (ASCII
10 ( 0x0A)), a new line (line feed).
o "
" (ASCII
13 ( 0x0D)), a carriage return.
o " " (ASCII
0 ( 0x00)), the NULL-byte.
o "x0B" (ASCII
11 ( 0x0B)), a vertical tab.
PARAMETERS
o $str
- The input string.
o $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.
RETURN VALUES
Returns the modified string.
EXAMPLES
Example #1
Usage example of rtrim(3)
<?php
$text = " These are a few words :) ... ";
$binary = "x09Example stringx0A";
$hello = "Hello World";
var_dump($text, $binary, $hello);
print "
";
$trimmed = rtrim($text);
var_dump($trimmed);
$trimmed = rtrim($text, " .");
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"
SEE ALSO
trim(3), ltrim(3).
PHP Documentation Group RTRIM(3)
