插入表单和多次上传

Question

我要插入广告。广告包含标题、一些文本、价格，并且可以有一个或多个图像。表格都在一页上。一个文件中的 php 和 html 也是如此。

在我的数据库中，我有一个 advertisement table 和一个 image table。他们都有一个唯一的 id 作为主要。

image table 还包含 filename 和来自 advertisement table 的 advertisement_id 是 table 的外键.

问题：

如何上传多个文件？
是一次性全部插入还是先插入广告再插入图片？

<div class="form-group">
    <label for="image"  class="col-sm-2 control-label">Image:</label>
    <div class="col-sm-6">
        <input type="file" id="exampleInputFile" name="filename[]" id="filename" multiple">
    </div>
</div>

Answer 1

关于你的第二个问题，我觉得先插广告再插图片比较明智

对于你的第一个问题，

html 代码应该是这样的

    <form name="multiupload" action="uploadmany.php" method="post" enctype="multipart/form-data">
    <input name="filesToUpload[]" type="file" multiple /></td>
    <td collapse=2><input name="savemultiimg" type="submit" value="submit"></td>
    </form>

这里是 php 代码。变量$err是上传状态的通知

    <?php
require("DataBaseConnection.php");
if(isset($_POST["savemultiimg"])) {
    for($i=0;$i<count($_FILES['filesToUpload']['tmp_name']);$i++){
        $name=$_FILES['filesToUpload']['name'][$i];
        $tmp_name=$_FILES['filesToUpload']['tmp_name'][$i];


$target_dir = "images/";  //the dir where you want to save images
$target_file = $target_dir . rand().'_'.($name); //this will be the name of the img, and we will give it a random number so if you uploaded two image with same name you don't have a problem
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
    $check = getimagesize($tmp_name);
    if($check !== false) {
        //echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        $err= "file you uploaded is not an image";
        $uploadOk = 0;
    }//end if

// Check if file already exists,, this will appear if you removed the random number on the top
if (file_exists($target_file)) {
    $err ="file already exists";
    $uploadOk = 0;
}//end if

if ($uploadOk != 0)
{
if (move_uploaded_file($tmp_name, $target_file)) {
    $err ="file uploaded succ.";
    $sql = "...";//your sql here
    $result = $con->query($sql);

} else {
    $err ="unecpected error occured";
}   //end if upload

    }//end ($uploadOk != 0)
}//end forloop
header('Location: index.php?err='.$err.');
}
?>

此代码来自我的一个大学项目，我刚刚对其进行了修改以满足您的需求。如果它给你带来任何错误，请告诉我，我很乐意帮助你。

源代码复制自w3schools，并针对多次上传进行了更改。

插入表单和多次上传

Insert form and multiple upload

php

html

mysql

upload