mb_strrpos

    (PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

    mb_strrpos — Find position of last occurrence of a string in a string

    Опис

    mb_strrpos(
        string $haystack,
        string $needle,
        int $offset = 0,
        ?string $encoding = null
    ): int|false

    Performs a multibyte safe strrpos() operation based on the number of characters. needle position is counted from the beginning of haystack. First character's position is 0. Second character position is 1.

    Параметри

    haystack

    The string being checked, for the last occurrence of needle

    needle

    The string to find in haystack.

    offset
    May be specified to begin searching an arbitrary number of characters into the string. Negative values will stop searching at an arbitrary point prior to the end of the string.
    encoding

    Параметром encoding вказується кодування символів. Якщо він пропущений або null, використається внутрішнє кодування.

    Значення, що повертаються

    Returns the numeric position of the last occurrence of needle in the haystack string. If needle is not found, it returns false.

    Журнал змін

    Версія Опис
    8.0.0 needle тепер може бути порожнім рядком.
    8.0.0 Passing the encoding as the third argument instead of an offset has been removed.
    8.0.0 encoding тепер може бути null.

    Прогляньте також

    • mb_strpos() - Find position of first occurrence of string in a string
    • mb_internal_encoding() - Set/Get internal character encoding
    • strrpos() - Find the position of the last occurrence of a substring in a string

    Improve This Page

    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
    ＋add a note

    User Contributed Notes 2 notes

    up
    2
    Anonymous
    18 years ago
    mb_strrpos throws a warning if $haystack is empty.
    strrpos simply returns FALSE.

    This is something to be wary of if overloading the mb functions.
    up
    1
    Anonymous
    9 years ago
    "Negative values will stop searching at an arbitrary point prior to the end of the string. " ist misleading.
    The needle may not fully part of searchrange, defined by a negative offset.
    A negative offsets marks the last byte, where a search could start.
    <?php
    $test     = "Hallo, Herr Gött";
    var_dump(strlen($test)); // int(17)
    var_dump(mb_strrpos($test,'ött',13)); // int(13)
    var_dump(mb_strrpos($test,'ött',-4)); // int(13) 17-4 = 13
    var_dump(mb_strrpos($test,'ött',-5)); // bool(false)
    ?>
    ＋add a note
    To Top