如何在字符串中混音辅音？

Question

In PHP, we know that we can randomly shuffle string characters using function str_shuffle(). So a string "developer" will become "lrevdeope", "dvolpeere" and so on every time.

But this is not the thing I want. Instead, I want to randomly shuffle only consonants. So "developer" should become "verelodep", "leveroped" etc. on each page refresh.

How can we achieve it? Any idea?

Answer 1

After couple of minutes I have this:

$s = 'developer';
$cons = [];
for ($i = 0; $i < strlen($s); $i++) {
    if (!in_array($s[$i], ['a', 'e', 'i', 'o', 'u', 'y'])) {
        $cons[] = $s[$i];
        $s[$i] = '-';
    }
}

shuffle($cons);

for ($i = 0; $i < strlen($s); $i++) {
    if ($s[$i] == '-') {
        $s[$i] = array_shift($cons);
    }
}

echo $s . PHP_EOL;