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使用thinkPHP框架怎么实现一个计算器？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
HTML部分 文件名 index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>计算器</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>登录</span> </div> <div class="register"> <form action=""> <span>请输入你的手机号开始使用</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">计算器</span> <br><br> <input class="import" type="text" > <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>当前结果:</span><span id="current_results"></span> </div> <br><br> <span>历史记录:</span> <ul id="cal_result" > <li><span>删除</span></li> </ul> </div> </div> </body> <script type="text/javascript" src="public/js/index.js"> </script> </html>
CSS样式 文件名 index.css
.login{/*登录*/
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
//计算屏幕宽高
var w_width = $(window).width();
var w_height = $(window).height();
var operator = 0;//运算符号
var change = 0;//属于运算符后需要清空上一数值
var num1 = 0;//元算的第一个数据
var num2 = 0;//运算的第二个数据
var sum = 0;//运算结果
//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);
$(obj).css({left:this_left,top:this_height});
}
//正则
function testReg() {
//定义参数
var regType = arguments[0]?arguments[0]:'phone';
var myString = arguments[1]?arguments[1]:false;
var regArray = new Array();
regArray['phone'] = /^1[3|4|5|7|8]\d{9}$/;
regArray['email'] = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;//邮箱 *代表{0,} +代表{1,} ?代表{0,1}
//判断
if (myString){
return regArray[regType].test(myString);
}
return false;
}
//发送数据到后台
function sendMessage() {
//手机号
var myphone = $("#myphone").val();
//计算器
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();
}
//获取结果
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')
}
//获取数据
function deleteHistory(id) {
var myUrl = '/app/base.php';
var MyData = {id:id,type:'delete'};
$.post(myUrl,MyData,function (msg) {
//TODO
},'json')
getResultByPhone();
}
$(function () {
//登录居中
setCenter($(".login").show(8000));
//点击登录显示输入
$(".login").click(function(){
setCenter($(".register").show());
$(this).hide();
});
//点击使用显示计算器
$("#use").click(function () {
if (testReg('phone',$("#myphone").val())){
setCenter($(".calculator").show());
$(".register").hide();
getResultByPhone()
}else {
alert ("你输的手机格式不对");
return false;
}
})
$(".order").click(function () {//点击数字
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() {//点击运算符号触发事件
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 () {//点击等号
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);
}创建一个Mysqli类继承接口实现增删改查
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 "连接失败".mysqli_error();
}
}
}
public static function getInstance($config){
if (is_null(self::$_instance)){
self::$_instance = new self($config);
}
return self::$_instance;
}
//设计表
public function table($table){
$this->table = $table;
return $this;
}
//查询
private function changeCondition($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){
}
}配置项 文件名 config.php
<?php return [ 'db'=>[ 'host' => '127.0.0.1', 'user' => 'root', 'pwd' => 'root', 'db' => 'cal' ], 'author' =>[ 'adminuser' => 'mao', ] ];
操作计算器 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 ($_POST){
//查询
if ($_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']})'>删除</span>{$v['num1']} {$v['option']} {$v['num2']} = {$v['result']} </li>";
}
echo $result_string;
}
//删除
if ($_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);
}
}目录结构
sql语句
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` -- -- -------------------------------------------------------- -- -- 表的結構 `calculate` -- CREATE TABLE IF NOT EXISTS `calculate` ( `id` int(10) NOT NULL AUTO_INCREMENT COMMENT '序号 主键 自增', `user_phone` varchar(100) NOT NULL COMMENT '用户手机号', `num1` varchar(100) NOT NULL COMMENT '第一个数字', `num2` varchar(100) NOT NULL COMMENT '第二个数字', `option` varchar(10) NOT NULL COMMENT '加减乘除选项', `result` varchar(100) NOT NULL COMMENT '结果', `status` int(10) NOT NULL COMMENT '状态-1 删除 0 禁用 1 正常', `admin_user` varchar(100) NOT NULL COMMENT '管理员', PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='计算表' AUTO_INCREMENT=40 ; -- -- 轉存資料表中的資料 `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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