How do I remove all specific characters at the end of a string in PHP?

$output = rtrim($string, '.');

(Reference: rtrim on PHP.net)

using rtrim replaces all "." at the end, not just the last character

$string = "something here..";
echo preg_replace("/\.$/","",$string);

I know the question is solved. But maybe this answer will be helpful for someone.

rtrim() - Strip whitespace (or other characters) from the end of a string

ltrim() - Strip whitespace (or other characters) from the beginning of a string

trim() - Strip whitespace (or other characters) from the beginning and end of a string

For removing special characters from the end of the string or Is the string contains dynamic special characters at the end, we can do by regex.

preg_replace - Perform a regular expression search and replace

$regex = "/\.$/";             //to replace the single dot at the end
$regex = "/\.+$/";            //to replace multiple dots at the end
$regex = "/[.*?!@#$&-_ ]+$/"; //to replace all special characters (.*?!@#$&-_) from the end

$result = preg_replace($regex, "", $string);

Here is some example to understand when $regex = "/[.*?!@#$&-_ ]+$/"; is applied to string

$string = "Some text........"; // $resul -> "Some text";
$string = "Some text.????";    // $resul -> "Some text";
$string = "Some text!!!";      // $resul -> "Some text";
$string = "Some text..!???";   // $resul -> "Some text";

I hope it is helpful for you.

Thanks :-)

The last character can be removed in different ways, Here are some

• rtrim()

$output = rtrim($string, '.');

• Regular Expression

preg_replace("/\.$/", "", $string);

• substr() / mb_substr()

echo mb_substr($string, 0, -1);

echo substr(trim($string), 0, -1);

• substr() with trim()

echo substr(trim($string), 0, -1);

The chop() function removes whitespaces or other predefined characters from the right end of a string

$string = "something here.";

$string = chop($string,".");

echo $string;

Output

something here