Upload de fichier php

<?php


function file_fichier(){
			    
1				 img_blob='';
2			     img_weight='';
3				 img_type='';
4			     img_name='';
5				 ret=false;
6			     max_weight='250000';
7			ret=is_uploaded_file($_FILES['sbphoto']['tmp_name']);
8			if(!ret){
9			         echo "le fichier n'a pas pu etre transferé";
10					 return false;
11			}
12			else{
13			img_weight=$_FILES['sbphoto']['size'];
14			if(img_weight>max_weight){
15			echo "votre fichier ne peut depasser plus de 250 ko";
16			return false;
17			}
18			img_type=$_FILES['sbphoto']['type'];
19			img_name=$_FILES['sbphoto']['name'];
20			}
21			include ("transfert_connexion.php");
22			img_blob= file_get_contents($_FILES['sbphoto']['tmp_name']);
			
23           $req= "INSERT INTO image(img_name,img_weight,img_type,img_blob)                   VALUES("."'".$img_name."',"."'".$img_weight."',"."'".$img_type."',"."'".$img_blob."')";
     return true;
?>