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thinkPHP框架實(shí)現(xiàn)的簡單計算器示例

 更新時間：2018年12月07日 14:18:05   作者：luckymaoyy  
這篇文章主要介紹了thinkPHP框架實(shí)現(xiàn)的簡單計算器,結(jié)合實(shí)例形式分析了基于thinkPHP框架的用戶登陸、數(shù)值計算、數(shù)據(jù)庫讀寫、歷史記錄保存等功能相關(guān)實(shí)現(xiàn)技巧與操作注意事項(xiàng),需要的朋友可以參考下

本文實(shí)例講述了thinkPHP框架實(shí)現(xiàn)的簡單計算器。分享給大家供大家參考，具體如下：

HTML部分 文件名 index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>計算器</title>
  <script type="text/javascript" src="public/js/jquery-2.2.3.js"></script>
  <link rel="stylesheet" href="public/css/index.css" rel="external nofollow" >
</head>
<body>
  <div class="login">
      <span>登錄</span>
  </div>
  <div class="register">
      <form action="">
        <span>請輸入你的手機(jī)號開始使用</span>
        <br><br>
        <input id="myphone" type="text">
        <input id="use" type="button" value="使用">
        <br><br>
      </form>
  </div>
  <div class="calculator">
      <div class="counter">
        <span class="brand">計算器</span>
        <br><br>
        <input class="import" type="text" style="text-align: right;">
        <br><br>
        <form class="snap" action="">
          <br><br>
          <input class="order" id="one" type="button" value="1">
          <input class="order" id="two" type="button" value="2">
          <input class="order" id="three" type="button" value="3">
          <input class="order" id="four" type="button" value="4">
          <input class="order" id="five" type="button" value="5">
          <br><br>
          <input class="order" id="six" type="button" value="6">
          <input class="order" id="seven" type="button" value="7">
          <input class="order" id="eight" type="button" value="8">
          <input class="order" id="nine" type="button" value="9">
          <input class="order" id="zero" type="button" value="0">
          <br><br>
          <input class="operator" id="plus" type="button" value="+">
          <input class="operator" id="add" type="button" value="-">
          <input class="operator" id="mul" type="button" value="*">
          <input class="operator" id="sub" type="button" value="/">
          <input class="" id="equal" type="button" value="=">
          <br><br>
          <input class="order" type="button" value=".">
          <input id="backspace" type="button" value="←">
          <input id="clear" type="button" value="c">
          <input type="button" value="CE">
          <input type="button" value="MC">
        </form>
      </div>
      <div class="result">
        <div>
          <span>當(dāng)前結(jié)果:</span><span id="current_results"></span>
        </div>
        <br><br>
        <span>歷史記錄:</span>
        <ul id="cal_result" style="list-style-type: none">
          <li><span>刪除</span></li>
        </ul>
      </div>
  </div>
</body>
  <script type="text/javascript" src="public/js/index.js">
  </script>
</html>

CSS樣式 文件名 index.css

.login{/*登錄*/
  height: 30px;
  width: 100px;
  background-color: #00a2d4;
  text-align: center;
  cursor: pointer;
  padding-top: 10px;
  position: fixed;
}
.register{
  display: none;
  position: fixed;
}
.calculator{
  display: none;
  position: fixed;
}
.counter{
  border: 1px solid black;
  height: 400px;
  width: 320px;
  float: left;
}
.import{
  height: 20px;
  width: 180px;
  margin-top: 50px;
  margin-left: 50px;
}
.snap{
  margin-left: 50px;
  margin-top: -30px;
}
.snap input{
  height: 30px;
  width: 30px;
}
.result{
  border: 1px solid black;
  height: 400px;
  width: 320px;
  float: left;
  margin-left: 50px;
}
.brand{
  position: relative;
  top: 50px;
  left: 90px;
}

JS部分  文件名 index.js

//計算屏幕寬高
var w_width = $(window).width();
var w_height = $(window).height();
var operator = 0;//運(yùn)算符號
var change = 0;//屬于運(yùn)算符后需要清空上一數(shù)值
var num1 = 0;//元算的第一個數(shù)據(jù)
var num2 = 0;//運(yùn)算的第二個數(shù)據(jù)
var sum = 0;//運(yùn)算結(jié)果
//居中
function setCenter(obj){
  var this_width = $(obj).width();
  var this_height = $(obj).height();
  var this_left = parseInt((w_width-this_width)/2);
  var this_height = parseInt((w_height-this_height)/2);
  $(obj).css({left:this_left,top:this_height});
}
//正則
function testReg() {
  //定義參數(shù)
  var regType = arguments[0]?arguments[0]:'phone';
  var myString = arguments[1]?arguments[1]:false;
  var regArray = new Array();
  regArray['phone'] = /^1[3|4|5|7|8]\d{9}$/;
  regArray['email'] = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;//郵箱 *代表{0,}　+代表{1,}　?代表{0,1}
  //判斷
  if (myString){
    return regArray[regType].test(myString);
  }
  return false;
}
//發(fā)送數(shù)據(jù)到后臺
function sendMessage() {
  //手機(jī)號
  var myphone = $("#myphone").val();
  //計算器
  var myUrl = '/app/base.php';
  var myData = {num1:num1,num2:num2,cal_option:operator,cal_result:sum,myphone:myphone,type:'add'};
  $.post(myUrl,myData,function (msg) {
    //TODO
  },'json')
  getResultByPhone();
}
//獲取結(jié)果
function getResultByPhone() {
  var myphone = $("#myphone").val();
  var myUrl = '/app/base.php';
  var myData = {myphone:myphone,type:'getResult'};
  $.post(myUrl,myData,function (msg) {
    //TODO
    $("#cal_result").html(msg);
  },'text')
}
//獲取數(shù)據(jù)
function deleteHistory(id) {
  var myUrl = '/app/base.php';
  var MyData = {id:id,type:'delete'};
  $.post(myUrl,MyData,function (msg) {
    //TODO
  },'json')
  getResultByPhone();
}
$(function () {
  //登錄居中
  setCenter($(".login").show(8000));
  //點(diǎn)擊登錄顯示輸入
  $(".login").click(function(){
    setCenter($(".register").show());
    $(this).hide();
  });
  //點(diǎn)擊使用顯示計算器
  $("#use").click(function () {
    if (testReg('phone',$("#myphone").val())){
      setCenter($(".calculator").show());
      $(".register").hide();
      getResultByPhone()
    }else {
      alert ("你輸?shù)氖謾C(jī)格式不對");
      return false;
    }
  })
  $(".order").click(function () {//點(diǎn)擊數(shù)字
    var num = $(this).val();
    var oldValue = $(".import").val();
    if (change ==1){
      oldValue = "0";
      change = 0;
    }
    var newValue = "";
    if (num == -1){
      oldValue = parseFloat(oldValue);
      newValue = oldValue * -1;
    }else if (num == "."){
      if (oldValue.indexOf('.') == -1)
        newValue = oldValue + ".";
      else
        newValue = oldValue;
    }else {
      if (oldValue == 0 && oldValue.lastIndexOf('.') == -1){
        newValue = num;
      }else {
        newValue = oldValue + num;
      }
    }
    $(".import").val(newValue);
  });
  $("#clear").click(function () {//清除
    $(".import").val("0");
    operator = 0;
    change = 0;
    num1 = 0;
    num2 = 0;
  });
  $("#backspace").click(function () {//退格
    if (change ==1){
      operator = 0;
      change = 0;
    }
    var value = $(".import").val();
    if (value.length == 1){
      $(".import").val("0");
    }else {
      value = value.substr(0,value.length - 1);
      $(".import").val(value);
    }
  });
  $(".operator").click(function() {//點(diǎn)擊運(yùn)算符號觸發(fā)事件
    change = 1;
    operator = $(this).val();
    var value = $(".import").val();
    var dianIndex = value.indexOf(".");
    if (dianIndex == value.length) {
      value = value.substr(0, value.length - 1);
    }
    num1 = parseFloat(value);
  });
  $("#equal").click(function () {//點(diǎn)擊等號
    var value = $(".import").val();
    var dianIndex = value.indexOf(".");
    if (dianIndex == value.length){
      value = value.substr(0,value.length - 1);
    }
    var equal = $(this).val();
    num2 = parseFloat(value);
    if (operator == "+"){
      sum = num1 + num2;
    }else if (operator == "-"){
      sum = num1 - num2;
    }else if (operator == "*"){
      sum = num1 * num2;
    }else if (operator == "/"){
      sum = num1 / num2;
    }else if (operator == "" || num1 ==0 || num2 == 0){
      sum = num1 +num2;
    }
    var re = /^[0-9]+.?[0-9]*$/;
    if (re.test(sum)){
      sum = sum.toFixed(2);
    }
    $(".import").val(sum);
    sendMessage();
    $("#current_results").text(num1 + operator + num2 + equal + sum);
    change = 1;
    operator = 0;
    num1 = 0;
    num2 = 0;
  });
})

接口 文件名 IDB.php

<?php
namespace mao;
interface IDB{
  public function insert($data);
  public function update($data);
  public function select($data);
  public function del($data);
}

創(chuàng)建一個Mysqli類繼承接口實(shí)現(xiàn)增刪改查

文件名 MySqli.clsaa.php

<?php
namespace mao;
include "IDB.php";
class MySqli implements IDB{
  private $conn = null;
  private $table = null;
  private $sysConfig = array(
    'host' => '',
    'user' => '',
    'pwd' => '',
    'db' => ''
  );
  private static $_instance = null;
  private function __construct($config){
    if(is_array($config)){
      $this->sysConfig = array_merge($this->sysConfig,$config);
      $this->conn = new \Mysqli($this->sysConfig['host'],$this->sysConfig['user'],$this->sysConfig['pwd'],$this->sysConfig['db']);
      if (!$this->conn){
        echo "連接失敗".mysqli_error();
      }
    }
  }
  public static function getInstance($config){
    if (is_null(self::$_instance)){
      self::$_instance = new self($config);
    }
    return self::$_instance;
  }
  //設(shè)計表
  public function table($table){
    $this->table = $table;
    return $this;
  }
  //查詢
  private function changeCondition($condition){
    $where_array = array();
    foreach($condition as $k => $v){
      if(is_array($v)){
        if(strtolower($v[0])=='like'){
          $where_array[] = $k.' '.$v[0].' \'%'.$v[1].'%\'';
        }else{
          $where_array[] = $k.' '.$v[0].' \''.$v[1].'\'';
        }
      }
      if(is_string($v)){
        $where_array[] = $k.' = \''.$v.'\'';
      }
    }
    $where = implode(' AND ',$where_array);
    return $where?$where:1;
  }
  public function select($condition){
    $where = $this->changeCondition($condition);
    $sql = "select * from $this->table where ".$where."order by id desc limit 10";
    $res = $this->conn->query($sql);
    $ret = array();
    while ($row = $res->fetch_assoc()){
      $ret[] = $row;
    }
    return $ret;
  }
  public function insert($data){
    $sql = "insert into `{$this->table}` ( `id` ,`user_phone` ,`num1` ,`num2` ,`option` ,`result` ,`status` ,`admin_user` ) VALUES ( NULL , '{$data['myphone']}', '{$data['num1']}', '{$data['num2']}', '{$data['cal_option']}', '{$data['cal_result']}', '1', 'mao' )";
    $this->conn->query($sql);
  }
    public function update($id){
    $sql = "UPDATE `{$this->table}` SET `status` = '-1' WHERE `id` ={$id}";
    $this->conn->query($sql);
  }
  public function del($condition){
  }
}

配置項(xiàng)  文件名 config.php

<?php
return [
  'db'=>[
    'host' => '127.0.0.1',
    'user' => 'root',
    'pwd' => 'root',
    'db' => 'cal'
  ],
  'author' =>[
    'adminuser' => 'mao',
  ]
];

操作計算器 文件名 base.php

<?php
namespace mao;
define("ROOT_PATH",dirname(dirname(__FILE__)));
$config = include ROOT_PATH."/lib/config/config.php";
include ROOT_PATH."/lib/db/MySqli.class.php";
$db = MySqli::getInstance($config['db']);
if ($_POST){
  //查詢
  if ($_POST['type'] == 'getResult'){
    $condition = array(
      'user_phone' =>array('like',$_POST['myphone']),
      'status'=> '1'
    );
    $result = $db->table('calculate')->select($condition);
    $result_string = '';
    foreach ($result as $k => $v){
      $result_string .= "<li><span class='mydelte' onclick='deleteHistory({$v['id']})'>刪除</span>{$v['num1']} {$v['option']} {$v['num2']} = {$v['result']} </li>";
    }
    echo $result_string;
  }
  //刪除
  if ($_POST['type'] == 'delete'){
    $id = isset($_POST['id'])?$_POST['id']:'';
    $db->table('calculate')->update($id);
  }
  if ($_POST['type'] == 'add'){
    $data = $_POST;
    $db->table('calculate')->insert($data);
  }
}

目錄結(jié)構(gòu)

sql語句

SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";
SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
--
-- 資料庫: `cal`
--
-- --------------------------------------------------------
--
-- 表的結(jié)構(gòu) `calculate`
--
CREATE TABLE IF NOT EXISTS `calculate` (
 `id` int(10) NOT NULL AUTO_INCREMENT COMMENT '序號 主鍵 自增',
 `user_phone` varchar(100) NOT NULL COMMENT '用戶手機(jī)號',
 `num1` varchar(100) NOT NULL COMMENT '第一個數(shù)字',
 `num2` varchar(100) NOT NULL COMMENT '第二個數(shù)字',
 `option` varchar(10) NOT NULL COMMENT '加減乘除選項(xiàng)',
 `result` varchar(100) NOT NULL COMMENT '結(jié)果',
 `status` int(10) NOT NULL COMMENT '狀態(tài)-1 刪除 0 禁用 1 正常',
 `admin_user` varchar(100) NOT NULL COMMENT '管理員',
 PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='計算表' AUTO_INCREMENT=40 ;
--
-- 轉(zhuǎn)存資料表中的資料 `calculate`
--
INSERT INTO `calculate` (`id`, `user_phone`, `num1`, `num2`, `option`, `result`, `status`, `admin_user`) VALUES
(1, '15727228076', '', '', '', '', 0, ''),
(2, '15727228076', '7', '6', '+', '13', -1, 'jingshan'),
(3, '13880425377', '9', '6', '+', '15', -1, 'jingshan'),
(4, '13880425377', '8', '7', '+', '15', -1, 'jingshan'),
(5, '13880425377', '8', '9', '*', '72', -1, 'jingshan'),
(6, '13880425377', '6', '7', '+', '13', 1, 'jingshan'),
(7, '13880425377', '89', '7', '+', '96', -1, 'jingshan'),
(8, '13880425377', '67', '8', '+', '75', 1, 'jingshan'),
(9, '13880425377', '2', '7', '+', '9', 1, 'jingshan'),
(10, '13880425377', '78', '7', '+', '85', 1, 'jingshan'),
(11, '13880425377', '12', '9', '*', '108', 1, 'jingshan'),
(12, '13880425377', '23', '7', '-', '16', 1, 'jingshan'),
(13, '13880425377', '67', '2', '-', '65', 1, 'jingshan'),
(14, '13880425377', '34', '7', '+', '41', 1, 'jingshan'),
(15, '13880425377', '78', '8', '/', '9.75', 1, 'jingshan'),
(16, '13880425377', '72', '9', '+', '81', 1, 'jingshan'),
(17, '13880425377', '78', '9', '+', '0', 1, 'mao'),
(18, '13880425377', '67', '9', '+', '0', 1, 'mao'),
(19, '13880425377', '78', '9', '+', '0', 1, 'mao'),
(20, '13880425377', '78', '9', '+', '0', 1, 'mao'),
(21, '13880425377', '67', '8', '+', '0', 1, 'mao'),
(22, '13880425377', '62', '8', '+', '0', 1, 'mao'),
(23, '13880425377', '12', '9', '*', '0', 1, 'mao'),
(24, '13880425377', '12', '9', '+', '0', 1, 'mao'),
(25, '13880425377', '7', '8', '-', '0', 1, 'mao'),
(26, '13880425377', '2', '4', '+', '0', 1, 'mao'),
(27, '13880425377', '8', '9', '*', '0', 1, 'mao'),
(28, '13880425377', '8', '9', '+', '0', 1, 'mao'),
(29, '13880425377', '12', '9', '*', '108.00', 1, 'mao'),
(30, '13880425377', '7', '8', '+', '15.00', 1, 'mao'),
(31, '13880425377', '1', '9', '*', '9.00', 1, 'mao'),
(32, '13880425377', '29', '7', '*', '203.00', 1, 'mao'),
(33, '13880425377', '95', '8', '/', '11.88', 1, 'mao'),
(34, '13880425377', '67', '98', '*', '6566.00', 1, 'mao'),
(35, '13880425377', '22', '9', '-', '13.00', 1, 'mao'),
(36, '13880425377', '45', '9', '/', '5.00', 1, 'mao'),
(37, '13880425377', '555', '777', '+', '1332.00', 1, 'mao'),
(38, '13880425377', '89', '0', '-', '89.00', 1, 'mao'),
(39, '13880425377', '0', '89', '0', '89.00', 1, 'mao');
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
---------------------

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