admin_class.php

<?php
session_start();
ini_set('display_errors', 1);
Class Action {
	private $db;

	public function __construct() {
		ob_start();
   	include 'db_connect.php';
    
    $this->db = $conn;
	}
	function __destruct() {
	    $this->db->close();
	    ob_end_flush();
	}

	function login(){
		extract($_POST);
			$qry = $this->db->query("SELECT *,concat(firstname,' ',lastname) as name FROM users where username = '".$username."' and password = '".md5($password)."' and type= 1 ");
		if($qry->num_rows > 0){
			foreach ($qry->fetch_array() as $key => $value) {
				if($key != 'password' && !is_numeric($key))
					$_SESSION['login_'.$key] = $value;
			}
				return 1;
		}else{
			return 2;
		}
	}
	function logout(){
		session_destroy();
		foreach ($_SESSION as $key => $value) {
			unset($_SESSION[$key]);
		}
		header("location:login.php");
	}
	function login2(){
		extract($_POST);
			$qry = $this->db->query("SELECT *,concat(lastname,', ',firstname,' ',middlename) as name FROM students where student_code = '".$student_code."' ");
		if($qry->num_rows > 0){
			foreach ($qry->fetch_array() as $key => $value) {
				if($key != 'password' && !is_numeric($key))
					$_SESSION['rs_'.$key] = $value;
			}
				return 1;
		}else{
			return 3;
		}
	}
	function save_user(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id','cpass','password')) && !is_numeric($k)){
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		if(!empty($cpass) && !empty($password)){
					$data .= ", password=md5('$password') ";

		}
		$check = $this->db->query("SELECT * FROM users where email ='$email' ".(!empty($id) ? " and id != {$id} " : ''))->num_rows;
		if($check > 0){
			return 2;
			exit;
		}
		if(isset($_FILES['img']) && $_FILES['img']['tmp_name'] != ''){
			$fname = strtotime(date('y-m-d H:i')).'_'.$_FILES['img']['name'];
			$move = move_uploaded_file($_FILES['img']['tmp_name'],'../assets/uploads/'. $fname);
			$data .= ", avatar = '$fname' ";

		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO users set $data");
		}else{
			$save = $this->db->query("UPDATE users set $data where id = $id");
		}

		if($save){
			return 1;
		}
	}
	function signup(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id','cpass')) && !is_numeric($k)){
				if($k =='password'){
					if(empty($v))
						continue;
					$v = md5($v);

				}
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}

		$check = $this->db->query("SELECT * FROM users where email ='$email' ".(!empty($id) ? " and id != {$id} " : ''))->num_rows;
		if($check > 0){
			return 2;
			exit;
		}
		if(isset($_FILES['img']) && $_FILES['img']['tmp_name'] != ''){
			$fname = strtotime(date('y-m-d H:i')).'_'.$_FILES['img']['name'];
			$move = move_uploaded_file($_FILES['img']['tmp_name'],'../assets/uploads/'. $fname);
			$data .= ", avatar = '$fname' ";

		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO users set $data");

		}else{
			$save = $this->db->query("UPDATE users set $data where id = $id");
		}

		if($save){
			if(empty($id))
				$id = $this->db->insert_id;
			foreach ($_POST as $key => $value) {
				if(!in_array($key, array('id','cpass','password')) && !is_numeric($key))
					$_SESSION['login_'.$key] = $value;
			}
					$_SESSION['login_id'] = $id;
			return 1;
		}
	}

	function update_user(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id','cpass','table')) && !is_numeric($k)){
				if($k =='password')
					$v = md5($v);
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		if($_FILES['img']['tmp_name'] != ''){
			$fname = strtotime(date('y-m-d H:i')).'_'.$_FILES['img']['name'];
			$move = move_uploaded_file($_FILES['img']['tmp_name'],'assets/uploads/'. $fname);
			$data .= ", avatar = '$fname' ";

		}
		$check = $this->db->query("SELECT * FROM users where email ='$email' ".(!empty($id) ? " and id != {$id} " : ''))->num_rows;
		if($check > 0){
			return 2;
			exit;
		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO users set $data");
		}else{
			$save = $this->db->query("UPDATE users set $data where id = $id");
		}

		if($save){
			foreach ($_POST as $key => $value) {
				if($key != 'password' && !is_numeric($key))
					$_SESSION['login_'.$key] = $value;
			}
			if($_FILES['img']['tmp_name'] != '')
			$_SESSION['login_avatar'] = $fname;
			return 1;
		}
	}
	function delete_user(){
		extract($_POST);
		$delete = $this->db->query("DELETE FROM users where id = ".$id);
		if($delete)
			return 1;
	}
	function save_system_settings(){
		extract($_POST);
		$data = '';
		foreach($_POST as $k => $v){
			if(!is_numeric($k)){
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		if($_FILES['cover']['tmp_name'] != ''){
			$fname = strtotime(date('y-m-d H:i')).'_'.$_FILES['cover']['name'];
			$move = move_uploaded_file($_FILES['cover']['tmp_name'],'../assets/uploads/'. $fname);
			$data .= ", cover_img = '$fname' ";

		}
		$chk = $this->db->query("SELECT * FROM system_settings");
		if($chk->num_rows > 0){
			$save = $this->db->query("UPDATE system_settings set $data where id =".$chk->fetch_array()['id']);
		}else{
			$save = $this->db->query("INSERT INTO system_settings set $data");
		}
		if($save){
			foreach($_POST as $k => $v){
				if(!is_numeric($k)){
					$_SESSION['system'][$k] = $v;
				}
			}
			if($_FILES['cover']['tmp_name'] != ''){
				$_SESSION['system']['cover_img'] = $fname;
			}
			return 1;
		}
	}
	function save_image(){
		extract($_FILES['file']);
		if(!empty($tmp_name)){
			$fname = strtotime(date("Y-m-d H:i"))."_".(str_replace(" ","-",$name));
			$move = move_uploaded_file($tmp_name,'../assets/uploads/'. $fname);
			$protocol = strtolower(substr($_SERVER["SERVER_PROTOCOL"],0,5))=='https'?'https':'http';
			$hostName = $_SERVER['HTTP_HOST'];
			$path =explode('/',$_SERVER['PHP_SELF']);
			$currentPath = '/'.$path[1]; 
			if($move){
				return $protocol.'://'.$hostName.$currentPath.'/assets/uploads/'.$fname;
			}
		}
	}
	function save_class(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id')) && !is_numeric($k)){
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		$chk = $this->db->query("SELECT * FROM classes where level ='$level' and section = '$section' and id != '$id' ");
		if($chk->num_rows > 0){
			return 2;
			exit;
		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO classes set $data");
		}else{
			$save = $this->db->query("UPDATE classes set $data where id = $id");
		}
		if($save){
			return 1;
		}
	}
	function delete_class(){
		extract($_POST);
		$delete = $this->db->query("DELETE FROM classes where id = $id");
		if($delete){
			return 1;
		}
	}
	function save_subject(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id')) && !is_numeric($k)){
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		$chk = $this->db->query("SELECT * FROM subjects where subject_code ='$subject_code' and id != '$id' ");
		if($chk->num_rows > 0){
			return 2;
			exit;
		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO subjects set $data");
		}else{
			$save = $this->db->query("UPDATE subjects set $data where id = $id");
		}
		if($save){
			return 1;
		}
	}
	function delete_subject(){
		extract($_POST);
		$delete = $this->db->query("DELETE FROM subjects where id = $id");
		if($delete){
			return 1;
		}
	}
	function save_student(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id','areas_id')) && !is_numeric($k)){
				if($k == 'description')
					$v = htmlentities(str_replace("'","&#x2019;",$v));
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		$chk = $this->db->query("SELECT * FROM students where student_code ='$student_code' and id != '$id' ")->num_rows;
		if($chk > 0){
			return 2;
			exit;
		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO students set $data");
		}else{
			$save = $this->db->query("UPDATE students set $data where id = $id");
		}
		if($save){
			return 1;
		}
	}
	function delete_student(){
		extract($_POST);
		$delete = $this->db->query("DELETE FROM students where id = $id");
		if($delete){
			return 1;
		}
	}

	function save_result(){
		extract($_POST);
		$data = "";
		foreach($_POST as $k => $v){
			if(!in_array($k, array('id','mark','subject_id')) && !is_numeric($k)){
				if(empty($data)){
					$data .= " $k='$v' ";
				}else{
					$data .= ", $k='$v' ";
				}
			}
		}
		$chk = $this->db->query("SELECT * FROM results where student_id ='$student_id' and class_id='$class_id' and id != '$id' ");
		if($chk->num_rows > 0){
			return 2;
			exit;
		}
		if(empty($id)){
			$save = $this->db->query("INSERT INTO results set $data");
		}else{
			$save = $this->db->query("UPDATE results set $data where id = $id");
		}
		if($save){
				$id = empty($id) ? $this->db->insert_id : $id;
				$this->db->query("DELETE FROM result_items where result_id = $id");
				foreach($subject_id as $k => $v){
					$data= " result_id = $id ";
					$data.= ", subject_id = $v ";
					$data.= ", mark = '{$mark[$k]}' ";
					$this->db->query("INSERT INTO result_items set $data");
				}
				return 1;
		}
	}
	function delete_result(){
		extract($_POST);
		$delete = $this->db->query("DELETE FROM results where id = $id");
		if($delete){
			return 1;
		}
	}
	
}