PHP多图上传_多段上传

在PHP中，多图上传通常涉及到HTML表单、PHP处理脚本和数据库存储，以下是一个简单的实现步骤：

1、创建HTML表单：我们需要创建一个HTML表单，让用户可以选择并上传多个文件。

<form action="upload.php" method="post" enctype="multipart/formdata">
    Select images to upload:
    <input type="file" name="images[]" multiple>
    <input type="submit" value="Upload Images" name="submit">
</form>

2、处理上传的文件：我们需要创建一个PHP脚本来处理上传的文件，这个脚本会接收到用户通过表单提交的文件，然后将它们保存到服务器上。

<?php
if(isset($_POST['submit'])){
    if(!empty($_FILES['images']['name'][0])){
        foreach($_FILES['images']['name'] as $key=>$value){
            $filename = $_FILES['images']['name'][$key];
            $tmpname = $_FILES['images']['tmp_name'][$key];
            move_uploaded_file($tmpname,"uploads/".$filename);
        }
        echo "Images uploaded successfully";
    }else{
        echo "Please select at least one image";
    }
}
?>

3、存储文件信息到数据库：我们可以将上传的文件信息（如文件名、路径等）存储到数据库中，以便以后使用。

<?php
// Assuming you have a connection to your database in $conn
if(isset($_POST['submit'])){
    if(!empty($_FILES['images']['name'][0])){
        foreach($_FILES['images']['name'] as $key=>$value){
            $filename = $_FILES['images']['name'][$key];
            $tmpname = $_FILES['images']['tmp_name'][$key];
            move_uploaded_file($tmpname,"uploads/".$filename);
            
            // Store the file information into the database
            $sql = "INSERT INTO images (filename, path) VALUES ('$filename', 'uploads/$filename')";
            $conn>query($sql);
        }
        echo "Images uploaded and stored in database successfully";
    }else{
        echo "Please select at least one image";
    }
}
?>

注意：以上代码仅为示例，实际使用时需要考虑安全性问题，例如防止SQL注入、检查文件类型和大小等。