str_increment

    (PHP 8 >= 8.3.0)

    str_increment — Increment an alphanumeric string

    Опис

    str_increment(string $string): string

    Returns the incremented alphanumeric ASCII string.

    Параметри

    string

    The input string.

    Значення, що повертаються

    Returns the incremented alphanumeric ASCII string.

    Помилки/виключення

    A ValueError is thrown if string is empty.

    A ValueError is thrown if string is not an alphanumeric ASCII string.

    Приклади

    Приклад #1 Basic str_increment() example

    <?php
    $str     = 'ABC';
    var_dump(str_increment($str));
    ?>

    Поданий вище приклад виведе:

    string(3) "ABD"

    Приклад #2 str_increment() example with a carry

    <?php
    $str     = 'DZ';
    var_dump(str_increment($str));

    $str = 'ZZ';
    var_dump(str_increment($str));
    ?>

    Поданий вище приклад виведе:

    string(2) "EA"
string(3) "AAA"

    Прогляньте також

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    User Contributed Notes 1 note

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    yarns_purport0n at icloud dot com
    9 months ago
    The strings are incremented per character and each character position can be one of 3 modes:1. [A-Z] uppercase2. [a-z] lowercase3. [0-9] decimalyou can mix any combination of the modes and (at least in right to left languages like english) it always increments from the right overflowing leftwardsthe mode/type of character that overflows remains the mode/type of the first (0 index) position.so: input 'zZ9' & 'aaA0' is returnedso: input 'Z9z' & 'AA0a' is returnedso: input '9zZ' & '10aA' is returnedExample:<?php$str = 'zZ9'; // overflows in lowercaseecho $str = str_increment($str).PHP_EOL; // aaA0$str = 'Z9z'; // overflows in uppercaseecho $str = str_increment($str).PHP_EOL; // AA0a$str = '9zZ'; // overflows in decimalecho ($str = str_increment($str)); // 10aA?>
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