我想插入广告。广告包含标题,一些文本,价格并且可以具有一个或多个图像。表格全部在一页上。 php和html也在一个文件中。
在我的数据库中,我有一个advertisement
表和一个image
表。他们都有一个独特的身份证作为主要。
image
表还包含来自filename
的{{1}}和advertisement_id
,它是该表的外键。
问题:
如何上传多个文件?
我是否需要立即插入everthing或先插入广告然后再插入图片?
advertisement table
答案 0 :(得分:0)
至于你的第二个问题,我认为插入广告然后插入所有图片会更明智。
关于第一个问题,
html代码就是那样的
<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.');
}
?>
这段代码来自我的一个大学项目,我刚刚修改它以告诉你。如果它给你带来任何错误,请告诉我,我很乐意帮助你。
原始代码是从w3schools复制的,并且对多次上传进行了更改。