利用百度api实现文字转语音（ThinkPHP5 版）_个人笔记_我的小家_八零在线_符号象

<div style="background-color:#1e1f22;color:#bcbec4"><pre style="font-family:'JetBrains Mono',monospace;font-size:9.8pt;"><?php namespace app\common\service; use think\Cache; use think\Log; /** * 百度语音合成（ThinkPHP5 版） * 密钥通过后台配置读取 */ class BaiduTts { const TOKEN_CACHE_KEY = 'baidu_tts_token'; const TOKEN_TTL = 7000; private static $instance = null; private $appId; private $apiKey; private $secretKey; public static function instance() { if (is_null(self::$instance)) { self::$instance = new self(); } return self::$instance; } private function __construct($appId, $apiKey, $secretKey) { // 从后台读取 $this->appId=$appId; $this->apiKey= $apiKey; $this->secretKey=$secretKey; if (!$this->appId || !$this->apiKey || !$this->secretKey) { throw new \Exception('请在后台配置百度语音合成密钥'); } } /** * 通过密钥生成单例 */ public static function create($appId, $apiKey, $secretKey): self { // 支持多租户：用密钥 md5 做区分 $key = 'baidu_tts_' . md5($appId . $apiKey); if (!isset(self::$instance[$key])) { self::$instance[$key] = new self($appId, $apiKey, $secretKey); } return self::$instance[$key]; } /* 主入口 */ public function synthesis(string $text, string $saveDir = ''): string { $text = $this->plainText($text); // 先净化 if ($text === '') { throw new \Exception('合成文本不能为空'); } $saveDir = $saveDir ?: RUNTIME_PATH . 'tts' . DS; if (!is_dir($saveDir)) { mkdir($saveDir, 0755, true); } $mp3File = $saveDir . md5($text) . '.mp3'; if (is_file($mp3File)) { return $mp3File; } $token = $this->getAccessToken(); $this->doSynthesis($text, $token, $mp3File); return $mp3File; } /* 获取/刷新 token */ private function getAccessToken(): string { $token = Cache::get(self::TOKEN_CACHE_KEY); if ($token) return $token; $url = 'https://aip.baidubce.com/oauth/2.0/token?' . http_build_query([ 'grant_type' => 'client_credentials', 'client_id' => $this->apiKey, 'client_secret' => $this->secretKey, ]); $resp = json_decode(file_get_contents($url), true); if (empty($resp['access_token'])) { Log::error('BaiduTts getAccessToken failed: ' . json_encode($resp)); throw new \Exception('获取百度 access_token 失败'); } $token = $resp['access_token']; Cache::set(self::TOKEN_CACHE_KEY, $token, self::TOKEN_TTL); return $token; } /* 真正合成 */ private function doSynthesis(string $text, string $token, string $saveFile): void { $api = 'https://tsn.baidu.com/text2audio'; $param = [ 'tok' => $token, 'tex' => $text, 'cuid' => md5(uniqid()), 'ctp' => 1, 'lan' => 'zh', 'aue' => 3, 'per' => 0, 'spd' => 5, 'pit' => 5, 'vol' => 5, ]; $audio = $this->httpPost($api, http_build_query($param)); if (strpos($audio, '{') === 0) { $err = json_decode($audio, true); Log::error('BaiduTts synthesis failed: ' . $audio); throw new \Exception('合成失败：' . ($err['err_msg'] ?? '未知')); } file_put_contents($saveFile, $audio); } private function httpPost(string $url, string $body): string { $ch = curl_init(); curl_setopt_array($ch, [ CURLOPT_URL => $url, CURLOPT_POST => true, CURLOPT_POSTFIELDS => $body, CURLOPT_RETURNTRANSFER => true, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_TIMEOUT => 30, CURLOPT_HTTPHEADER => ['Content-Type: application/x-www-form-urlencoded'], ]); $resp = curl_exec($ch); if ($resp === false) { throw new \Exception('Curl Error: ' . curl_error($ch)); } curl_close($ch); return $resp; } /** * 把文字处理成适合 TTS 朗读的内容 * 1. 去 HTML 标签 & 实体 2. 去多余空白 3. 去不可见符号 * 4. 把常见符号转成口语 */ private function plainText(string $raw): string { // 先统一编码 $raw = mb_convert_encoding($raw, 'UTF-8', 'UTF-8'); /* --- 1. 剥掉所有 HTML 标签 & 实体 --- */ $raw = strip_tags($raw); $raw = html_entity_decode($raw, ENT_QUOTES | ENT_HTML5, 'UTF-8'); /* --- 2. 删掉非打印字符（除了空格、换行） --- */ $raw = preg_replace('/[\x{00}-\x{08}\x{0B}-\x{0C}\x{0E}-\x{1F}\x{7F}]+/u', '', $raw); /* --- 3. 把常见符号口语化 --- */ $map = [ '&' => '和', '@' => '在', '#' => '号', '©' => '版权', '®' => '注册商标', '℃' => '摄氏度', '￥' => '元', '$' => '美元', '%' => '百分之', '°' => '度', '+' => '加', '=' => '等于', '×' => '乘', '÷' => '除以', '>' => '大于', '<' => '小于', '/' => '每', '\\' => '、', '|' => '或', '【' => '（', '】' => '）', '[' => '（', ']' => '）', '{' => '（', '}' => '）', '（' => '（', // 全角括号保留 '）' => '）', '——' => '，', // 破折号 '—' => '，', '…' => '，', '·' => '点', '•' => '点', '※' => '星', '①' => '1', '②' => '2', '③' => '3', '④' => '4', '⑤' => '5', '⑥' => '6', '⑦' => '7', '⑧' => '8', '⑨' => '9', '⑩' => '10', ]; $raw = strtr($raw, $map); /* --- 4. 连续空格、制表、换行合并成单个空格 --- */ $raw = preg_replace('/\s+/u', ' ', $raw); /* --- 5. 去掉首尾空格 --- */ return trim($raw); } }</pre></div> <div>下面是调用代码</div><div><div style="background-color:#1e1f22;color:#bcbec4"><pre style="font-family:'JetBrains Mono',monospace;font-size:9.8pt;">$text = $this->request->param('text','','trim'); if (!$text){ return json(['code'=>0,'msg'=>'请输入要合成的文本']); } try{ $site = Config::get("site"); $baidu = \app\common\service\BaiduTts::create( $site['baidu_api_id'], $site['baidu_api_key'], $site['baidu_secret_key'] ); $mp3 = $baidu->synthesis($text); header('Content-Type: audio/mpeg'); header('Content-Disposition: inline; filename="' . basename($mp3) . '"'); readfile($mp3); exit; }catch (\Exception $e){ return json(['code'=>0,'msg'=>$e->getMessage()]); }</pre></div></div>