rtrim

(PHP 4, PHP 5, PHP 7)

rtrimStrip whitespace (or other characters) from the end of a string

Descrierea

rtrim ( string $string , string $characters = " \n\r\t\v\0" ) : string

This function returns a string with whitespace (or other characters) stripped from the end of string.

Without the second parameter, rtrim() will strip these characters:

  • " " (ASCII 32 (0x20)), an ordinary space.
  • "\t" (ASCII 9 (0x09)), a tab.
  • "\n" (ASCII 10 (0x0A)), a new line (line feed).
  • "\r" (ASCII 13 (0x0D)), a carriage return.
  • "\0" (ASCII 0 (0x00)), the NULL-byte.
  • "\v" (ASCII 11 (0x0B)), a vertical tab.

Parametri

string

The input string.

characters

You can also specify the characters you want to strip, by means of the characters parameter. Simply list all characters that you want to be stripped. With .. you can specify a range of characters.

Valorile întoarse

Returns the modified string.

Exemple

Example #1 Usage example of rtrim()

<?php

$text 
"\t\tThese are a few words :) ...  ";
$binary "\x09Example string\x0A";
$hello  "Hello World";
var_dump($text$binary$hello);

print 
"\n";

$trimmed rtrim($text);
var_dump($trimmed);

$trimmed rtrim($text" \t.");
var_dump($trimmed);

$trimmed rtrim($hello"Hdle");
var_dump($trimmed);

// trim the ASCII control characters at the end of $binary
// (from 0 to 31 inclusive)
$clean rtrim($binary"\x00..\x1F");
var_dump($clean);

?>

Exemplul de mai sus va afișa:

string(32) "        These are a few words :) ...  "
string(16) "    Example string
"
string(11) "Hello World"

string(30) "        These are a few words :) ..."
string(26) "        These are a few words :)"
string(9) "Hello Wor"
string(15) "    Example string"

A se vedea și

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