upload a file to a specific folder php - php

Question

My purpose is uploading a remote file create from my PC to specific folder, but I don't know whats wrong with my code below. It uploads the file with the name and the .jpg extension, but it is not moving the file to the specified folder.
if(isset($_POST["image"])){
define("SITE_NAME","project_name/"); //constant for project name
define("SITE_PATH",$_SERVER['DOCUMENT_ROOT']."/".SITE_NAME); //constant for project base directory
define("IMAGES_URL",SITE_URL."images/"); //constant for image directory
$upload_base_dir=IMAGES_URL;
$upload_time_dir=date('Y')."/".date('m')."/".date('d')."/"; // setup directory name
$upload_dir = $upload_base_dir.$upload_time_dir;
if (!file_exists($upload_dir)) {
mkdir($upload_dir, 0777, true); //create directory if not exist
}
$input = $_POST["image"];
$file = fopen(time()."image.jpg", 'wb');
fwrite($file, $input);
//$image_name=basename($_FILES['image']['name']);
$image=time().'_'.$image_name;
move_uploaded_file($file,$upload_dir.$image);
fclose($file);
}
Any suggestions? Thank you in advance.

Answer 1

move_uploaded_file($file,$upload_dir.$image) will only work for items within temp, that are accessable via $_FILES superglobal. If you are sending your file as a strieam within post, that wont work.
1) If file is a form upload make sure form is a multipart and access your file via $_FILES superglobal
move_uploaded_file($_FILES['userfile']['tmp_name'], $yourDirectory.$yourFilename);
2) If you post the file as a stream via post (keep in mind this will only work for small files as large ones will exceed request limit). Save the file directly to it's destiantion using fopen or to move it after you created it use rename() - http://php.net/manual/en/function.rename.php
rename($currentFilePath, $newFilePath)
P.S. sending files as post streams is a very very bad idea.