Php extension error

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Hey guys i get something im not suppose to get when i run this script. The problem is when i select a jpg picture it still says :FILE MUST Be jpg/jpeg ..im running this on localhost php ver 5.3.8. Would appreciate if u could help god bless u

<?php
 
$name = $_FILES['file']['name'];
$type = $_FILES['file']['type'];
$extension = strtolower(substr($name , strpos($name , '.'))+ 1 );
$tmp_name =$_FILES['file']['tmp_name'];
 
 
 
if(isset($name)){
 if(!empty($name)){
 
   if(($extension=='jpg' or $extension=='jpeg')&& $type=='image/jpeg'){
 
      $location = 'uploads/';
 
    if(move_uploaded_file($tmp_name , $location.$name)) {
       echo 'DONE';
    }else{
       echo "ERROR";
    }
   }else{
       echo 'FILE  MUST Be jpg/jpeg';
    }
   }else {
      echo 'PLZ SELECT A FILE';
   }
 }
 
 
?>
 
<form action='uploadextension.php' method="POST" enctype="multipart/form-data">
  <input type="file"  name ="file"><br><br>
  <input type="submit" value='UPLOAD'>
</form>

[johny10151981]

look at this line:

//strtolower(substr($name , strpos($name , '.'))+ 1 );
//substr($name , strpos($name , '.'))+ 1 //what does it return? probably zero but not your string.
 
//your line would be
strtolower(substr($name , strpos($name , '.')+1));
 

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ya that solved it thks bro u rock!