strrev

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

    strrev — Reverse a string

    Description

    strrev(string $string): string

    Returns string, reversed.

    Parameters

    string

    The string to be reversed.

    Return Values

    Returns the reversed string.

    Examples

    Example #1 Reversing a string with strrev()

    <?php
    echo strrev("Hello world!"); // outputs "!dlrow olleH"
    ?>

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    User Contributed Notes 2 notes

    up
    11
    info at ensostudio dot ru
    4 years ago
    <?php
    /**
    * Reverse a miltibyte string.
    *
    * @param string $string The string to be reversed.
    * @param string|null $encoding The character encoding. If it is omitted, the internal character encoding value
    * will be used.
    * @return string The reversed string
    */
    function mb_strrev(string $string, string $encoding = null): string
    {
    $chars = mb_str_split($string, 1, $encoding ?: mb_internal_encoding());
    return     implode('', array_reverse($chars));
    }
    ?>
    It's faster and flexible than tianyiw function (comment #122953)
    up
    7
    tianyiw at vip dot qq dot com
    6 years ago
    This function support utf-8 encoding, Human Language and Character Encoding Support:

    <?php
    function mb_strrev($str){
    $r = '';
    for (    $i = mb_strlen($str); $i>=0; $i--) {
    $r .= mb_substr($str, $i, 1);
    }
    return     $r;
    }

    echo     mb_strrev("☆❤world"); // echo "dlrow❤☆"
    ?>
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