w3resource

PHP: rtrim() function

Description

The rtrim() function is used to remove the whitespaces and other predefined characters from the right side of a string.

Version:

(PHP 4 and above)

Syntax:

rtrim(string_name, char_list)

Parameter:

Name Description Required /
Optional
Type
string_name The string that will be trimmed. Required String
char_list Specifies which character to remove from the string. Without this parameter, the function removs the following characters.
" " an ordinary space
"\0" - the NUL-byte
\t" - tab
\n" - line feed
\x0B" - a vertical tab
"\r" - a carriage return
Optional String

Return value:

Returns the modified string.

Value Type: String.

Pictorial Presentation

php-string-rtrim()

Example:

<?php
$text1="w3resource.com  ";
$text2="w3resource.com\t\t";
$text3="\t\tw3resource.com\x0A";
$text4="Good Morning"; 
$trimmed_text=rtrim($text1);
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text2);
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text3);
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text1,'w3');
var_dump($trimmed_text);
echo '<br>';
$trimmed_text=rtrim($text4,"ng");
var_dump($trimmed_text);
?>

Output :

string(14) "w3resource.com"
string(14) "w3resource.com"
string(16) "w3resource.com"
string(16) "w3resource.com"
string(10) "Good Morni"

View the example in the browser

See also

PHP Function Reference

Previous: quotemeta
Next: sha1_file



PHP: Tips of the Day

$_GET: An associative array of variables passed to the current script via the URL parameters

$_GET is an array that contains all the URL parameters; these are the whatever is after the ? in the URL.

Using http://www.example.com/index.php?myVar=myVal as an example. This information from this URL can be obtained by accessing in this format $_GET["myVar"] and the result of this will be myVal.

Using some code for those that don't like reading.

Example:

<?php
// URL = http://www.example.com/index.php?myVar=myVal
echo $_GET["myVar"] == "myVal" ? "true" : "false"; // returns "true"
?>

Output:

false

The above example makes use of the ternary operator.

This shows how you can access the value from the URL using the $_GET superglobal.

Now another example! gasp

// URL = http://www.example.com/index.php?myVar=myVal&myVar2=myVal2
echo $_GET["myVar"]; // returns "myVal"
echo $_GET["myVar2"]; // returns "myVal2"

Output:


It is possible to send multiple variables through the URL by separating them with an ampersand (&) character.

Security risk

It is very important not to send any sensitive information via the URL as it will stay in history of the computer and will be visible to anyone that can access that browser.