PHP rtrim()Functions
Examples
Remove characters from the right side of a string:
<?php
$str = "Hello World!";
echo $str . "<br>";
echo rtrim($str,"World!");
?>
$str = "Hello World!";
echo $str . "<br>";
echo rtrim($str,"World!");
?>
Run Example »
Definition and Usage
The rtrim() function removes whitespace or other predefined characters from the right side of a string.
Related functions:
- ltrim()- Removes whitespace or other predefined characters from the left side of a string.
- trim() - Removes whitespace or other predefined characters from both sides of a string.
Syntax
rtrim(string,charlist)
| Parameter | Description |
|---|---|
| string | Required. Specifies the string to check. |
| charlist | Optional. Specifies which characters to remove from the string. If this parameter is omitted, all of the following characters are removed:
|
Technical Details
| Return value: | Returns the modified string. |
|---|---|
| PHP Version: | 4+ |
| Changelog: | In PHP 4.1, thecharlistparameter was added. |
More Examples
Example 1
Remove spaces from the right side of a string:
<?php
$str = "Hello World! ";
echo "Without rtrim: " . $str;
echo "<br>";
echo "With rtrim: " . rtrim($str);
?>
$str = "Hello World! ";
echo "Without rtrim: " . $str;
echo "<br>";
echo "With rtrim: " . rtrim($str);
?>
The HTML output of the above code is as follows (view source):
<!DOCTYPE html>
<html>
<body>
Without rtrim: Hello World! <br>With rtrim: Hello World!
</body>
</html>
<html>
<body>
Without rtrim: Hello World! <br>With rtrim: Hello World!
</body>
</html>
The browser output of the above code is as follows:
Without rtrim: Hello World!
With rtrim: Hello World!
With rtrim: Hello World!
Run Example »
Example 2
Remove newline characters (\n) from the right side of a string:
<?php
$str = "Hello World!nnn";
echo "Without rtrim: " . $str;
echo "<br>";
echo "With rtrim: " . rtrim($str);
?>
$str = "Hello World!nnn";
echo "Without rtrim: " . $str;
echo "<br>";
echo "With rtrim: " . rtrim($str);
?>
The HTML output of the above code is as follows (view source):
<!DOCTYPE html>
<html>
<body>
Without rtrim: Hello World!
<br>With rtrim: Hello World!
</body>
</html>
<html>
<body>
Without rtrim: Hello World!
<br>With rtrim: Hello World!
</body>
</html>
The browser output of the above code is as follows:
Without rtrim: Hello World!
With rtrim: Hello World!
With rtrim: Hello World!
Run Example »
PHP String Reference Manual Other Extensions