xs/kuxin/helper/pinyin.php

<?php

namespace Kuxin\Helper;

use Kuxin\Config;

/**
 * Class Pinyin
 *
 * @package Kuxin\Helper
 * @author  Pakey <pakey@qq.com>
 */
class Pinyin
{

    protected static $data = null;

    /**
     * @return mixed
     */
    protected static function getdata()
    {
        if (self::$data === null) {
            $fp = fopen(__DIR__ . '/data/pinyin.dat', 'r') or exit('读取字典失败');
            while (!feof($fp)) {
                $line                            = trim(fgets($fp));
                self::$data[$line[0] . $line[1]] = substr($line, 3, strlen($line) - 3);
            }
            fclose($fp);
        }
        return self::$data;
    }

    /**
     * 转换成拼音
     *
     * @param string $str     待转换的字符串
     * @param bool   $isfirst 是否只需要首字符
     * @param string $default 匹配不到默认显示字符
     * @return string
     */
    public static function change(string $str, $isfirst = null, $default = '_')
    {
        $str     = iconv('UTF-8', 'GBK//ignore', $str);
        $isfirst = $isfirst === null ? (Config::get('pinyin.ucfirst', 1)) : $isfirst;
        $data    = self::getdata();
        $restr   = '';
        for ($i = 0, $j = strlen($str); $i < $j; $i++) {
            if (ord($str[$i]) > 0x80) {
                $c = $str[$i] . $str[$i + 1];
                ++$i;
                if (isset($data[$c])) {
                    $restr .= $isfirst ? ucfirst($data[$c]) : $data[$c];
                } else {
                    $restr .= $default;
                }
            } elseif (preg_match("/[\w\-]/i", $str[$i])) {
                $restr .= $str[$i];
            } else {
                $restr .= $default;
            }
        }
        return $restr;
    }
}