Check Upload file type from an array in PHP.

Question

How can I check if a file extension and mime type are in an array this is the code I currently have.

$upload_project_thum = $_FILES['upload_project_thum']['name'];
$upload_project_thum_ext = substr($upload_project_thum, strrpos($upload_project_thum, '.') + 1);    
$upload_permitted_types= array('image/jpeg:jpg','image/pjpeg:jpg','image/gif:gif','image/png:png');

Then down where i'm checking if the file is a valid type I have this foreach loop

foreach ($upload_permitted_types as $image_type) {
        $type = explode(":", $image_type);
            if (($type[0] != $_FILES['upload_project_thum']['type']) &&  ($upload_project_thum_ext != $type[1]) ) {
                $errmsg_arr[] = 'Please select a jpg, jpeg, gif, or png image to use as the project thumbnail'. $type[1] . " Type: ". $type[0];
                $errflag = true;
        }  

The problem is that if the file type isn't ALL of the types in the array (which is impossible) I get an error. It works to the point where if the upload file is in the array that error message won't trigger.

Answer 1

The way I am doing this now is:

    $upload_permitted_types['mime']= array('image/jpeg','image/gif','image/png');
$upload_permitted_types['ext']= array('jpeg','jpg','gif','png');

if(!in_array($_FILES['upload_project_thum']['type'],$upload_permitted_types['mime']) || !in_array($upload_project_thum_ext,$upload_permitted_types['ext'])
{
       $errmsg_arr[] = 'Please select a jpg, jpeg, gif, or png image to use as the project thumbnail';
       $errflag = true;
}

The advantage to this is that it will allow a .gif file with a mime of jpeg. So it doesn't force the mine and the extension to match but does make sure they are both image types.