phpcms表单图片上传

<!-- 表单页面 -->
<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="image" />
    <input type="submit" value="上传" />
</form>

// upload.php
<?php
if ($_FILES['image']['error'] == UPLOAD_ERR_OK) {
    $fileTmpPath = $_FILES['image']['tmp_name'];
    $fileName = $_FILES['image']['name'];
    $fileSize = $_FILES['image']['size'];
    $fileType = $_FILES['image']['type'];

    // 验证文件类型和大小
    if ($fileType != "image/jpeg" && $fileType != "image/png") {
        echo "只允许上传 JPEG 或 PNG 格式的图片";
        exit;
    }
    if ($fileSize > 2 * 1024 * 1024) { // 限制文件大小为 2MB
        echo "文件大小不能超过 2MB";
        exit;
    }

    // 移动文件到目标目录
    $uploadDir = './uploads/';
    if (!file_exists($uploadDir)) {
        mkdir($uploadDir, 0777, true);
    }
    $dest_path = $uploadDir . $fileName;
    if (move_uploaded_file($fileTmpPath, $dest_path)) {
        echo "文件上传成功！";
    } else {
        echo "文件上传失败！";
    }
} else {
    echo "上传错误：" . $_FILES['image']['error'];
}
?>