$ _FILES数组不上传后不为空 [英] $_FILES array is not empty upon uploading nothing
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问题描述
这是表格
form action="index.php" method="POST" enctype="multipart/form-data" >
<input type="file" name="image[]" multiple="multiple">
<input type="submit" value="upload">
</form>
我试图仅在if(!empty($_FILES['image'])){时运行我的代码，但由于某种原因，在不提交文件且仅单击提交时，数组不为空.
I am trying to only run my code when only when if(!empty($_FILES['image'])){ but for some reason the array is not empty upon submitting no files and only clicking submit.
如果能帮上忙，这里是剩下的代码，谢谢.
Here is the rest of the code if that will help, thanks.
<html>
图片上传
<form action="index.php" method="POST" enctype="multipart/form-data" >
<input type="file" name="image[]" multiple="multiple">
<input type="submit" value="upload">
</form>
<?php
include 'connect.php';
if(!empty($_FILES['image'])){
echo $_FILES['image']['error'];
$allowed = array('jpg', 'gif', 'png', 'jpeg');
$count = 0;
foreach($_FILES['image']['name'] as $key => $name){
$image_name = $name;
$tmp = explode('.', $image_name);
$image_extn = strtolower(end($tmp)); //can only reference file
$image_temp = $_FILES['image']['tmp_name'][$count];
$filesize = filesize($_FILES['image']['tmp_name'][$count]);
$count = $count +1;
if(count($_FILES['image']['tmp_name']) > 5){
echo "You can upload a maximum of five files.";
break;
}
else if(in_array($image_extn, $allowed) === false){
echo $name." is not an allowed file type<p></p>";
}
else if($filesize > 1024*1024*0.3){
echo $name." is too big, can be a maximum of 3MB";
}
else{
$image_path = 'images/' . substr(md5($name), 0, 10) . '.' . $image_extn;
move_uploaded_file($image_temp, $image_path);
mysql_query("INSERT INTO store VALUES ('', '$image_name', '$image_path')") or die(mysql_error());
$lastid = mysql_insert_id();
$image_link = mysql_query("SELECT * FROM store WHERE id = $lastid");
$image_link = mysql_fetch_assoc($image_link);
$image_link = $image_link['image'];
echo "Image uploaded.<p></p> Your image: <p></p><a href = $image_link>$image_path</a>";
}
}
}
else{
echo "Please select an image.";
}
?>
推荐答案
请改用is_uploaded_file PHP函数:
if(is_uploaded_file($_FILES['image']['tmp_name'])) {
//code here
}
http://php.net/manual/en/function. is-uploaded-file.php
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