如何在PHP中使用UTF-8执行strtr？

Question

我正在寻找一个兼容UTF-8的strtr for PHP.

Answer 1

function strtr_utf8($str, $from, $to) {
    $keys = array();
    $values = array();
    preg_match_all('/./u', $from, $keys);
    preg_match_all('/./u', $to, $values);
    $mapping = array_combine($keys[0], $values[0]);
    return strtr($str, $mapping);
}