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rtrim
(PHP 4, PHP 5, PHP 7)
rtrim — Strip whitespace (or other characters) from the end of a string
Description
rtrim
( string
$str
[, string $character_mask
] ) : string
This function returns a string with whitespace (or other characters) 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)), the NULL-byte.
- "\x0B" (ASCII 11 (0x0B)), a vertical tab.
Parameters
-
str -
The input string.
-
character_mask -
You can also specify the characters you want to strip, by means of the
character_maskparameter. Simply list all characters that you want to be stripped. With .. you can specify a range of characters.
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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Steph