Online PHP editor | output for VKQur

<?php $start_date = $this->input->post('start_date'); $filtered_students = $this->home_model->getFilterStudents(); $fil_std_count = $filtered_students->num_rows(); $filtered_student_ids = $this->home_model->getFilterStudentsIds(); $st_time = strtotime("09:00 am"); for ($i = 0; $i < $fil_std_count; $i++) { $end_time = date("H:i:s a", strtotime('+20 minutes', $st_time)); if (strtotime($end_time) > (strtotime("01:00 pm"))) { $st_time = strtotime("02:00 pm"); $end_time = date("H:i:s a", strtotime('+20 minutes', $st_time)); $filtered_students = $this->home_model->insert_appointment_schedule(date("H:i:s a", ($st_time)), $end_time, $filtered_student_ids[$i]->applicant_id, $start_date); $st_time = strtotime($end_time); } else if (strtotime($end_time) >= strtotime("04:00 pm")) { $start_date=date('Y-m-d', strtotime($start_date. ' + 1 days')); $st_time = strtotime("09:00 am"); $end_time = date("H:i:s a", strtotime('+20 minutes', $st_time)); $filtered_students = $this->home_model->insert_appointment_schedule(date("H:i:s a", ($st_time)), $end_time, $filtered_student_ids[$i]->applicant_id, $start_date); $st_time = strtotime($end_time); }