$0)\{$

$$ $message $=$ "You have already submitted an excuse for this course.";

$\}$ else $\{$

$$ if $(!$is$\_$dir$($$targetDir$))\{$

$$ mkdir$($$targetDir, $0777,$ true$)$;

$\}$

$//$name of ex

$$ $fileName $=$ isset$($$$\_$FILES$["$excuse$\_$file"$]["$name$"])?$ uniqid$()."\_".$ basename$($$$\_$FILES$["$excuse$\_$file"$]["$name$"])$ : $\text{'}\text{'}$;

$$ $targetFilePath $=$ $targetDir $.$ $fileName;

$$ if $(!$empty$($$$\_$FILES$["$excuse$\_$file"$]["$name$"]))\{$

$$ $fileType $=$ strtolower$($pathinfo$($$targetFilePath, PATHINFO$\_$EXTENSION$))$;

$$ $allowedTypes $=["$pdf$","$jpg$","$png$",$ "jpeg"$]$;

$$ $maxFileSize $=5*1024*1024$;

$$ if $($in$\_$array$($$fileType, $allowedTypes$))\{$

$$ if $($$$\_$FILES$["$excuse$\_$file"$]["$size$"]<=$ $maxFileSize$)\{$

$$ if $($$conn$)\{$

$$ $stmt $=$ mysqli$\_$prepare$($$conn, "INSERT INTO excuses $($scheduleID$,$ fileName, status, studentID$)$ VALUES $(?,?,?,?)")$;

$$ mysqli$\_$stmt$\_$bind$\_$param$($$stmt$,"$ssss$",$ $scheduleID, $fileName, $status, $studentID$)$;

$$

$$ $executeResult $=$ mysqli$\_$stmt$\_$execute$($$stmt$)$;

$$ if $($$executeResult && move$\_$uploaded$\_$file$($$$\_$FILES$["$excuse$\_$file"$]["$tmp$\_$name"$],$ $targetFilePath$))\{$

$$ $message $=$ "Excuse successfully submitted!";

$$ echo $"$

$$ alert$(\text{'}$Excuse successfully submitted!$\text{'})$;

$$ window.location.href $=$ 'view$\_$exam$\_$schedule.php$\text{'}$;

$"$;

$$ exit;

$\}$ else $\{$

$$ $message $=$ "There was an error uploading the file or submitting the excuse.";

$\}$

$$ mysqli$\_$stmt$\_$close$($$stmt$)$;

$\}$ else $\{$

$$ $message $=$ "Database connection failed.";

$\}$

$\}$ else $\{$

$$ $message $=$ "File size exceeds the allowed limit $(5$ MB$)."$;

$\}$

$\}$ else $\{$

$$ $message $=$ "Unsupported file format. Allowed formats: pdf$,$ jpg$,$ png$."$;

$\}$

$\}$ else $\{$

$$ $message $=$ "Please attach a file.";

$\}$

$\}$

$\}$

$?>$ i need to assign schudualID and StudentID by defult not to make user entered