How to check uploaded file type in PHP

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Never use $_FILES..['type']. The information contained in it is not verified at all, it’s a user-defined value. Test the type yourself. For images, exif_imagetype is usually a good choice:

$allowedTypes = array(IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_GIF);
$detectedType = exif_imagetype($_FILES['fupload']['tmp_name']);
$error = !in_array($detectedType, $allowedTypes);

Alternatively, the finfo functions are great, if your server supports them.

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