How Can I Save a Text-to-Speech Generated MP3 File in PHP?

Below is an example of how you could save the returned audio content as an MP3 file using PHP. In this example, the API call returns the audio data as a string, which is then written directly to a file using file_put_contents.

PHPCopied
<?php
// Assuming you've already created and configured your $client instance
$response = $client->audio()->speech([
    'model' => 'tts-1',
    'input' => 'The quick brown fox jumped over the lazy dog.',
    'voice' => 'alloy',
]);

// Specify the path and filename for the output MP3 file
$outputFile = 'output.mp3';

// Write the audio content to the file
if (file_put_contents($outputFile, $response) !== false) {
    echo "The file was saved as {$outputFile}";
} else {
    echo "There was an error saving the file.";
}
?>

Explanation

1. API Call:
   The $client->audio()->speech() method is used to generate the audio content from text. It returns the audio data as a string.

2. Saving to a File:
   The PHP function file_put_contents() is used to write the audio string to a file. If the file is successfully written, it returns the number of bytes written; otherwise, it returns false.

3. Error Handling:
   The example includes a simple error check to confirm that the file was written successfully.

You can customize the file path, error handling, or add more logic as needed for your application.