如何解决基本的PHP文件上传，可以在localhost上运行，但不能在服务器上运行
name它在本地主机上工作正常
但在上传过程完成后，在服务器上没有在服务器上添加任何文件。
<?PHP
// Check if the form was submitted
mkdir("upload",0755);
if($_SERVER["REQUEST_METHOD"] == "POST"){
// Check if file was uploaded without errors
if(isset($_FILES["photo"]) && $_FILES["photo"]["error"] == 0){
$allowed = array("jpg" => "image/jpg","jpeg" => "image/jpeg","gif" => "image/gif","png" => "image/png");
$filename = $_FILES["photo"]["name"];
$filetype = $_FILES["photo"]["type"];
$filesize = $_FILES["photo"]["size"];
// Verify file extension
$ext = pathinfo($filename,PATHINFO_EXTENSION);
if(!array_key_exists($ext,$allowed)) die("Error: Please select a valid file format.");
// Verify file size - 5MB maximum
$maxsize = 5 * 1024 * 1024;
if($filesize > $maxsize) die("Error: File size is larger than the allowed limit.");
// Verify MYME type of the file
if(in_array($filetype,$allowed)){
// Check whether file exists before uploading it
if(file_exists("upload/" . $filename)){
echo $filename . " is already exists.";
} else{
move_uploaded_file($_FILES["photo"]["tmp_name"],"upload/" . $filename);
echo "Your file was uploaded successfully.";
}
} else{
echo "Error: There was a problem uploading your file. Please try again.";
}
} else{
echo "Error: " . $_FILES["photo"]["error"];
}
}
?>
也可以在本地但不适用于服务器。
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