php上传图片 中文乱码

<?php
header('Content-Type: text/html; charset=utf-8');

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $fileName = $_FILES['fileToUpload']['name'];
    $fileName = mb_convert_encoding($fileName, 'UTF-8', 'auto');

    $targetDir = 'uploads/';
    $targetFile = $targetDir . basename($fileName);

    if (move_uploaded_file($_FILES['fileToUpload']['tmp_name'], $targetFile)) {
        echo "The file " . htmlspecialchars( basename( $_FILES["fileToUpload"]["name"])). " has been uploaded.";
    } else {
        echo "Sorry, there was an error uploading your file.";
    }
}
?>

<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="fileToUpload" id="fileToUpload">
    <input type="submit" value="Upload Image" name="submit">
</form>