php 相册上传代码

<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_FILES['image'])) {
    $target_dir = "uploads/";
    $target_file = $target_dir . basename($_FILES["image"]["name"]);
    $imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));

    // 检查文件是否为图片
    $check = getimagesize($_FILES["image"]["tmp_name"]);
    if($check !== false) {
        echo "File is an image - " . $check["mime"] . ".";
        if (move_uploaded_file($_FILES["image"]["tmp_name"], $target_file)) {
            echo "The file ". htmlspecialchars( basename( $_FILES["image"]["name"])). " has been uploaded.";
        } else {
            echo "Sorry, there was an error uploading your file.";
        }
    } else {
        echo "File is not an image.";
    }
}
?>

<!DOCTYPE html>
<html>
<head>
    <title>Upload Image</title>
</head>
<body>
    <form action="upload.php" method="post" enctype="multipart/form-data">
        Select image to upload:
        <input type="file" name="image" id="image">
        <input type="submit" value="Upload Image" name="submit">
    </form>
</body>
</html>