Briefly explain how PHP connects to Baidu speech synthesis interface

PHP docking Baidu speech synthesis interface

In recent years, with the rapid development of artificial intelligence technology, speech synthesis technology has attracted more and more attention and application. Among them, Baidu speech synthesis interface is a tool with powerful functions and wide applicability.

This article will briefly explain how to use PHP language to connect to Baidu speech synthesis interface, and provide corresponding code examples.

1. Get the Baidu speech synthesis interface development key

First, we need to register an account on the Baidu Voice Open Platform and create an application. After the application is successfully created, we can obtain the "APP ID", "API Key" and "Secret Key". These three parameters can be used to send requests to the Baidu speech synthesis interface and obtain the return results.

2. Send a request and get the return result

In PHP, we can use the cURL library to send an HTTP request and get the return result.

The following is a simple code example that demonstrates how to use PHP to send a request and obtain the return result of the Baidu speech synthesis interface:

<?php
/**
 * 使用PHP对接百度语音合成接口
 */

// 百度语音合成接口参数
$appId = 'your_app_id';
$apiKey = 'your_api_key';
$secretKey = 'your_secret_key';
$text = '欢迎使用百度语音合成接口';

// 生成签名
$curTime = time();
$salt = mt_rand();
$sign = md5($apiKey . $text . $salt . $curTime . $secretKey);

// 构造请求参数
$param = array(
    'tex' => urlencode($text),
    'lan' => 'zh',
    'cuid' => 'your_unique_id',
    'ctp' => '1',
    'pit' => '8',
    'spd' => '5',
    'vol' => '5',
    'per' => '0',
    'aue' => '3',
    'url' => 'http://www.example.com/callback.php', // 可选，回调地址
    'callback' => 'http://www.example.com/callback.php', // 可选，回调地址
    'cuid' => 'your_unique_id' // 可选，用户唯一ID
);

// 发送HTTP请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://tsn.baidu.com/text2audio');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($param));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Content-Type: application/x-www-form-urlencoded',
    'Content-Length: ' . strlen(http_build_query($param)),
    'CurTime: ' . $curTime,
    'Nonce: ' . $salt,
    'CheckSum: ' . $sign
));

$result = curl_exec($ch);
curl_close($ch);

// 处理返回结果
if ($result) {
    // 下载语音文件
    file_put_contents('output.mp3', $result);
    echo '成功生成语音文件';
} else {
    echo '请求失败';
}
?>

3. Execute the code and generate a speech file

Save the above code as a PHP file and run the file. If everything goes well, you will see a voice file named "output.mp3" generated in the current directory.

In the above code, we use the text-to-speech function of Baidu speech synthesis interface to convert the string "Welcome to use Baidu speech synthesis interface" into a speech, and save this speech as a file called " output.mp3" file.

It should be noted that "your_app_id", "your_api_key" and "your_secret_key" in the above code need to be replaced with the real parameters you applied for on the Baidu Voice Open Platform.

Summary:

This article briefly introduces how to use PHP language to connect to Baidu speech synthesis interface. By generating a signature and sending an HTTP request to the interface, we can obtain the results returned by the Baidu speech synthesis interface and save them as voice files.

For more complex usage scenarios, corresponding adjustments and expansions need to be made according to specific needs. I hope this article can provide you with some help when using PHP to connect to Baidu speech synthesis interface.

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