Rtrim()

Our article is about the PHP function rtrim(), which is used to remove whitespace (or other characters) from the end of a string. This function is useful for cleaning up user input or formatting output. In this article, we will discuss the syntax and usage of rtrim(), as well as provide some examples.

The rtrim() function is used to remove whitespace (or other characters) from the end of a string. The syntax of the rtrim() function is as follows:

string rtrim ( string $str [, string $character_mask ] )

The function takes two parameters: $str and $character_mask. The $str parameter is the string to be trimmed. The $character_mask parameter is optional and specifies which characters to remove from the end of the string.

Here is an example of how to use the rtrim() function:

<?php
$string = 'Hello World!     ';
echo rtrim($string);
?>

In this example, we have a string variable $string that contains extra whitespace at the end. We use the rtrim() function to remove the extra whitespace from the end of the string.

The output of this code will be:

Hello World!

As you can see, the rtrim() function has removed the extra whitespace from the end of the string.

The rtrim() function is a useful tool for cleaning up user input or formatting output in PHP. It can help you remove whitespace (or other characters) from the end of a string, which is useful for various purposes such as trimming form data or formatting output for display. By mastering this function, you can become a more proficient PHP developer.

We hope this article has been helpful in understanding the rtrim() function in PHP.