直到最近,我一直在使用一些PHP将照片上传到网站.但突然间它开始触发各种错误信息.
我使用on action的表单运行以下代码:
$uploaddir = "../../user_content/photo/";
$allowed_ext = array("jpeg", "jpg", "gif", "png");
if(isset($_POST["submit"])) {
$file_temp = $_FILES['file']['tmp_name'];
$info = getimagesize($file_temp);
} else {
print "File not sent to server succesfully!";
exit;
}
表单的文件上载部分包含以下元素:
<input name="file" type="file" class="photo_file_upload">
用于上载的提交按钮具有以下属性:
<button type="submit" name="submit" class="photo_upload">Upload</button>
但每当我运行它时,我总会收到以下警告:
Warning: getimagesize() [function.getimagesize]: Filename cannot be empty in (upload PHP file) on line 10
(第10行是这部分:$info = getimagesize($file_temp);)
任何人对这是什么原因都有任何想法?
解决方法:
您检查了表单是否已提交,但未检查文件是否已发送.在某些情况下,可以提交表单但不会发送文件(即文件大小大于配置中的文件大小限制).
用这个:
if(isset($_POST["submit"]) && isset($_FILES['file'])) {
$file_temp = $_FILES['file']['tmp_name'];
$info = getimagesize($file_temp);
} else {
print "File not sent to server succesfully!";
exit;
}
你看&& isset($_ FILES [‘file’])是新的
或者你可以扩展它
if(isset($_POST["submit"]) && isset($_FILES['file'])) {
$file_temp = $_FILES['file']['tmp_name'];
$info = getimagesize($file_temp);
}
elseif(isset($_POST["submit"]) && !isset($_FILES['file'])) {
print "Form was submitted but file wasn't send";
exit;
}
else {
print "Form wasn't submitted!";
exit;
}