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- <?php
- /**
- *
- */
- class Calculator
- {
- var $so_thu_nhat;
- var $so_thu_hai;
- var $result = 0;
- function phepTinh($phuongThuc,$so_thu_nhat,$so_thu_hai){
- $this->so_thu_nhat = (int)$so_thu_nhat;
- $this->so_thu_hai = (int)$so_thu_hai;
- $phuongThuc = '';
- switch ($phuongThuc) {
- case '-':
- $result = $this->so_thu_nhat - $this->so_thu_hai;
- break;
- case '+':
- $result = $this->so_thu_nhat + $this->so_thu_hai;
- break;
- case '/':
- $result = $this->so_thu_nhat / $this->so_thu_hai;
- break;
- case '*':
- $result = $this->so_thu_nhat * $this->so_thu_hai;
- break;
- default:
- $result = $this->so_thu_nhat + $this->so_thu_hai;
- break;
- }
- return $this->$result;
- }
- function phepTinh2n($phuongThuc,$so_thu_hai){
- $condition = 'Giả sử như đây là phép tính đã có số đầu tiên (kết quả từ phép tính trước) ';
- if ($condition == true) {
- $this->so_thu_hai = (int)$so_thu_hai;
- $phuongThuc = '';
- switch ($phuongThuc) {
- case '-':
- $result = $this->result - $this->so_thu_hai;
- break;
- case '+':
- $result = $this->result + $this->so_thu_hai;
- break;
- case '/':
- $result = $this->result / $this->so_thu_hai;
- break;
- case '*':
- $result = $this->result * $this->so_thu_hai;
- break;
- default:
- $result = $this->result + $this->so_thu_hai;
- break;
- }
- return $this->$result;
- }
- }
- }
- ?>
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