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rtrim
Strip whitespace (or other characters) from the end of a string
(PHP 4, PHP 5)
string rtrim ( string str [, string charlist] )
This function returns a string with whitespace stripped from the end of str.
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)), theNUL-byte. -
"\x0B" (ASCII
11(0x0B)), a vertical tab.
Parameters
- str
The input string.
- charlist
You can also specify the characters you want to strip, by means of the charlist parameter. Simply list all characters that you want to be stripped. With
..you can specify a range of characters.
Examples
Example 2427. 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"