循环通过范围 A 到 AAZ

Question

如何在 php.ini 中循环 A 到 AAZ。 我可以遍历 A 到 Z 并使用下面的代码列出它们

foreach (range('A', 'Z') as $char) {
    echo $char . "\n";
}

有没有一种方法可以让我从 A 循环到 AAZ。 所以输出应该是

A,B,C,..Z,AA,AB,AC,AD...AZ,BA,BB,BC...AAZ.

Answer 1

您必须为此创建多个循环：

// Write A...Z
foreach (range('A', 'Z') as $char) {
    echo $char . "\n";
}

// Write AA...ZZ
foreach (range('A', 'Z') as $char1) {
    foreach (range('A', 'Z') as $char2) {
        echo $char1 . $char2 . "\n";
    }
}

// Write AAA...ZZZ
foreach (range('A', 'Z') as $char1) {
    foreach (range('A', 'Z') as $char2) {
        foreach (range('A', 'Z') as $char3) {
            echo $char1 . $char2 . $char3 . "\n";
        }
    }
}