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

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PHP: Tips of the Day

PHP: How to write to the console in PHP?

Firefox

On Firefox you can use an extension called FirePHP which enables the logging and dumping of information from your PHP applications to the console. This is an addon to the awesome web development extension Firebug.

  • http://www.studytrails.com/blog/using-firephp-in-firefox-to-debug-php/

Chrome

However if you are using Chrome there is a PHP debugging tool called Chrome Logger or webug (webug has problems with the order of logs).

More recently Clockwork is in active development which extends the Developer Tools by adding a new panel to provide useful debugging and profiling information. It provides out of the box support for Laravel 4 and Slim 2 and support can be added via its extensible API.

Using Xdebug

A better way to debug your PHP would be via Xdebug. Most browsers provide helper extensions to help you pass the required cookie/query string to initialize the debugging process.

  • Chrome - Xdebug Helper
  • Firefox - The easiest Xdebug
  • Opera - Xdebug
  • Safari - Xdebug Toggler

Ref : https://bit.ly/3ck9rFg