PHP Upload IF ISSET 总是这么说?
好的,我的代码有一些奇怪的问题.我正在尝试使用照片上的文字上传表格.现在,我需要检查是上传照片还是仅插入文本.
OK, i have some kind of strange problem with my code. I'm trying to make uploading form with text along photos. Now, I need to check if the photo is uploaded or the text is inserted only.
简化后的代码如下所示:
The simplified code looks like this:
if (isset ($_FILES['image'])){
echo 'yes';
} else {
echo 'no';
}
表格如下:
<form action="" method="post" enctype="multipart/form-data" class="contact-form">
<form action="" method="post" enctype="multipart/form-data" class="contact-form">
<label for="title"><strong>Title</strong> (required)</label>
<input type="text" name="title" value="" required>
<label><span class="small"><strong>Add a photo</strong></span></label>
<input type="file" name="image"/>
<input type="submit" name"submit" value="Submit">
</form>
现在,基本上,我要做的是检查文件是否附加,因为我需要一个替代选项来以相同的形式发布没有照片的帖子;但是,问题是,无论是否连接,它总是说是.
Now, basically, what I'm trying to make is a check if file is attached or not, because I need an alternate option for posting posts without photos, in the same form; but, the problem is that no mather if it is attached or not it always says YES.
帮助,任何人.
推荐答案
要检查文件是否已经上传,如何:
To check if the file has been uploaded, how about:
if (!file_exists($_FILES['image']['tmp_name']) || !is_uploaded_file($_FILES['image']['tmp_name']))
{
echo 'No upload';
}
else
{
// Your file has been uploaded
}
is_uploaded_file()
是这里的选择,请查看文档.
is_uploaded_file()
is the choice here, check the docs out for it.
$_FILES
是一个文件数组,数组第一维的每个文件在第二维自动赋予一个['tmp_name']
键,值是它的临时位置.
$_FILES
is an array of files, and each file in the first dimension of the array is automatically given a ['tmp_name']
key in the second dimension, with the value being it's temporary location.
显然你需要在临时文件上使用 move_uploaded_file()
.
Obviously you then need to use move_uploaded_file()
on the temporary file.
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