How can the PHP code be improved to ensure successful sound file uploads and database association?

To ensure successful sound file uploads and database association in PHP, it is important to properly handle file uploads, validate the file type, move the uploaded file to a designated directory, and store the file information in the database. 

<?php
// Check if the form was submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Check if a file was selected
    if ($_FILES['sound_file']['error'] === UPLOAD_ERR_OK) {
        // Validate the file type
        $allowed_types = ['audio/mpeg', 'audio/wav', 'audio/mp3'];
        if (in_array($_FILES['sound_file']['type'], $allowed_types)) {
            // Move the uploaded file to a designated directory
            $upload_dir = 'uploads/';
            $upload_file = $upload_dir . basename($_FILES['sound_file']['name']);
            move_uploaded_file($_FILES['sound_file']['tmp_name'], $upload_file);
            
            // Store file information in the database
            $filename = $_FILES['sound_file']['name'];
            $query = "INSERT INTO sound_files (filename) VALUES ('$filename')";
            // Execute the query
        } else {
            echo "Invalid file type. Please upload an MP3 or WAV file.";
        }
    } else {
        echo "Error uploading file. Please try again.";
    }
}
?>

Keywords

file uploads database association PHP code error handling validation

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