rtrim

(PHP 4, PHP 5, PHP 7, PHP 8)

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

Опис

rtrim(string $string, string $characters = " \n\r\t\v\x00"): 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.

Параметри

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.

Значення, що повертаються

Returns the modified string.

Приклади

Приклад #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);

?>

Поданий вище приклад виведе:

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"

Прогляньте також

  • 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