PHP 8 reference · String Functions

PHP strrev() Function

Reverse a string byte by byte. Fine for ASCII, but it breaks multibyte characters such as é.

Create a free account to save this page, take notes and track your progress. Sign in

Syntax

strrev(string $string): string

Parameter	Description
`string`	The input string.

The reversed string.

Reverse textTry it yourself

<?php
echo strrev("camel"), "\n";
echo strrev("12345"), "\n";

Output

lemac
54321

Palindrome checkTry it yourself

<?php
$word = "racecar";
echo $word === strrev($word) ? "palindrome" : "not a palindrome", "\n";

Output

palindrome

For UTF-8 text, reverse the characters instead: implode("", array_reverse(mb_str_split($text))).

Version	Change
PHP 4.0	Added

array_reverse() · Return a new array with the elements in reverse order. String keys are kept; numeric keys are renumbered by default.
str_split() · Split a string into an array of chunks of a given length, one byte each by default. Use mb_str_split() for UTF-8.
PHP Strings · tutorial

Was this page helpful?