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favicon generator script give some minor error in php code

hi friends i m just create a demo of php favicon image generator when i trying to submit the image it shows the image in fixed size which you select but it also give a error thats is 

Strict Standards: Only variables should be passed by reference in 
C:\xampp\htdocs\demo123\index.php on line 40

line 40

$ext = end(explode(".",strtolower(trim($_FILES["image"]["name"]))));
Solution

  • From PHP.net

    The following things can be passed by reference:

- Variables, i.e. foo($a)
- New statements, i.e. foo(new foobar())
- [References returned from functions][2]

    So Change your code as below

    $data = trim($_FILES["image"]["name"]);
$data = strtolower($data);
$data = explode(".",$data);
$ext = end($data);

    OR

    $ext = pathinfo($_FILES["image"]["name"], PATHINFO_EXTENSION);