To upload a file, first create a directory and then upload it to the directory_PHP tutorial

File name:
Upload file:

$mkdir_file_dir = mkdir(' ./img/'.$_POST['title'],0777); //Get the title and create a folder under the final directory to store the files specified by the category
$tmp_file_name = $_FILES['file ']['tmp_name']; //Get the uploaded temporary file
$file_name = $_FILES['file']['name']; //Source file
$file_dir = './img/ '.$_POST['title'].'/'; //Final save directory
if(is_dir($file_dir))
{
move_uploaded_file($tmp_file_name,$file_dir.$file_name); / /Move the file to the final saving directory
$img_url = $file_dir.$file_name;
$link = mysql_connect("localhost","root","");
mysql_select_db("fenye");
mysql_query("set names utf8");
$insert = "insert into upfiles(title,img_url) values ​​('{$_POST['title']}','{$img_url}') ";
mysql_query($insert); // Store the file path in the database
}
?>