Detailed introduction to the practical tutorial of implementing shopping cart in PHP session-PHP Tutorial-php.cn

This article mainly introduces the shopping cart function of PHP session in detail, which has certain reference value. Interested friends can refer to it

Use PHP session session in wamp environment Control the effect of completing the shopping cart. The data is stored in the array for practice. There is no connection to the database. The effect is good and easy to understand. The following is the code of each part.

common.php

<?php
header("content-type:text/html;charset=utf-8");
$arrPro = array(
    array(&#39;id&#39;=>1,&#39;img&#39;=>&#39;img/1.jpg&#39;,&#39;title&#39;=>&#39;小米移动电源5000mAh&#39;,&#39;price&#39;=>49),
    array(&#39;id&#39;=>2,&#39;img&#39;=>&#39;img/2.jpg&#39;,&#39;title&#39;=>&#39;20000mAh小米移动电源2&#39;,&#39;price&#39;=>149),
    array(&#39;id&#39;=>3,&#39;img&#39;=>&#39;img/3.jpg&#39;,&#39;title&#39;=>&#39;小米圈铁耳机Pro&#39;,&#39;price&#39;=>129),
    array(&#39;id&#39;=>4,&#39;img&#39;=>&#39;img/4.jpg&#39;,&#39;title&#39;=>&#39;小米家电动滑板车&#39;,&#39;price&#39;=>1999),
    array(&#39;id&#39;=>5,&#39;img&#39;=>&#39;img/5.jpg&#39;,&#39;title&#39;=>&#39;小米笔记本&#39;,&#39;price&#39;=>3499),
    array(&#39;id&#39;=>6,&#39;img&#39;=>&#39;img/6.jpg&#39;,&#39;title&#39;=>&#39;米家LED智能台灯&#39;,&#39;price&#39;=>169),
    array(&#39;id&#39;=>7,&#39;img&#39;=>&#39;img/7.jpg&#39;,&#39;title&#39;=>&#39;小米体重秤&#39;,&#39;price&#39;=>99),
    array(&#39;id&#39;=>8,&#39;img&#39;=>&#39;img/8.png&#39;,&#39;title&#39;=>&#39;小米电视3s 48英寸&#39;,&#39;price&#39;=>2599)
  );

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index.php

<?php 
header("content-type:text/html;charset=utf-8");
require &#39;common.php&#39;;
session_start();
$sum = 0;
$class = "";
//判断左上角购物车的样式显示
if(!empty($_SESSION[&#39;shopcar&#39;])){
  $data = $_SESSION[&#39;shopcar&#39;];
  $sum = array_sum($data[4]);
  $class = "on";
  //右上角圆点
    if(empty($data[0])){
      $class = "";
    }
  }
?>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>商品展示</title>
  <style type="text/css">
  section{
    width:1032px;
    height: 700px;
    margin: 40px auto;
  }
  .top{
    float: right;
    position: relative;
    width: 190px;
    height: 34px;
    border: 1px solid #ccc;
    margin-right: 32px;
    text-align: center;
    line-height: 34px;
    border-radius: 4px;
    transition: all .3s linear;
    -moz-transition: all .3s linear;
    -webkit-transition: all .3s linear;
  }
  .top a{
    color: #d00;
  }
  .top:hover{
    width: 210px;
    color: #fff;
    font-weight: bold;
    background-color: #d00;
    border-radius: 6px;
  }
  .top:hover a{
    color: #fff;
  }
  .top:hover span{
    background-color: #fff;
    color: #d00;
  }
  .top:hover .star{
    right:150px;
    top: 0;
    font-size: 14px;
    color: #ff0;
    transform: rotate(1080deg);
  }
  .top span{
    position: absolute;
    top:2px;
    right: 40px;
    width: 18px;
    height: 18px;
    font-weight: bold;
    border-radius: 9px;
    line-height: 18px;
    text-align: center;
    font-size: 12px;
    font-weight: border;
    color: #fff;
  }
  .star{
    color: #fff;
    font-size: 48px;
    font-style: normal;
    position: absolute;
    right:530px;
    top:186px;
    transform: rotate(60deg);
    transition: all .3s ease;
  }
  .on{
    background-color: #e00;
  }
  .list{
    margin: 20px 20px;
    padding: 36px 0;
    list-style: none;
  }  
  a{
    display: block;
    color: #757575;
    text-decoration: none;
  }
  .list li{
    float: left;
    height: 246px;
    width: 234px;
    padding: 10px 0 20px;
    margin-right:12px;
    margin-top: 20px;
    border: 1px solid #ccc;
    background: #fff;
    -webkit-transition: all .2s linear;
    transition: all .2s linear;
  }
  .list li:hover{
    box-shadow: 2px 4px 5px #aaa;
  }
  .figure{
    width: 150px;
    height: 150px;
    margin: 0 auto 18px;
  }
  .title{
    color: #222;
    font-size: 14px;
    font-weight: normal;
    text-align: center;
  }
  .price{
    margin: 0 10px 10px;
    text-align: center;
    color: #ff6700;
  }
  .cart{
    margin: 0 15px 5px;
    text-align: center;
  }
  .cart a{
    color: #a34;
    width: 190px;
    height: 24px;
    border-radius: 4px;
    margin: 0 8px 5px;
    text-align: center;
  }
  .cart a:hover{
    color: #eee;
    box-shadow: 0 2px 1px #333,0 2px 1px #666;
    background-color: #ccc;
    background-image: linear-gradient(#33a6b8,#0089a7)
  }
  .num{
    text-align: center;
    color: #ff6700;
  }
  </style>
</head>
<body>
  <section>
  <p class=&#39;top&#39;>
  <a href="spcar.php" rel="external nofollow" >我的购物车</a><span class="<?php echo $class;?>"><?php echo $sum;?></span>
  <em class=&#39;star&#39;>★</em>
  </p>
  <ul class="list">
  <?php foreach ($arrPro as $key => $value):?>
  <li>
    <p class="figure"> 
    <a href=""><img src=" rel="external nofollow" <?php echo $value[&#39;img&#39;];?>" width="150" height="150" alt="小米移动电源5000mAh"></a> 
    </p> 
    <h3 class="title"> 
    <a href=""><?php echo $value[&#39;title&#39;];?></a>
    </h3> 
    <p class="price"><span class="num">￥<?php echo $value[&#39;price&#39;];?></span></p>
    <p class=&#39;cart&#39;><a href="action.php?id=<?php echo $value[&#39;id&#39;];?>" rel="external nofollow" >加入购物车</a></p>
  </li>
  <?php endforeach;?>
  </ul>
  <p style=&#39;clear:both&#39;></p>
  </section>
</body>
</html>

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action.php

<?php
if(!empty($_GET[&#39;id&#39;])){
  require &#39;common.php&#39;;
  session_start();
  $id = $_GET[&#39;id&#39;];
  //把所选ID的商品信息遍历出来
  foreach ($arrPro as $key => $value) {
    if($id == $value[&#39;id&#39;]){
    $arrData = $arrPro[$key];
    }
  }

  //用一个新的二维数组把商品信息存起来
  $arrDatax[0][$arrData[&#39;id&#39;]] = $arrData[&#39;id&#39;];
  $arrDatax[1][$arrData[&#39;id&#39;]] = $arrData[&#39;img&#39;];
  $arrDatax[2][$arrData[&#39;id&#39;]] = $arrData[&#39;title&#39;];
  $arrDatax[3][$arrData[&#39;id&#39;]] = $arrData[&#39;price&#39;];
  $arrDatax[4][$arrData[&#39;id&#39;]] = 1;
  //判断是否有SESSION存在，有则在数组后添加，没有则直接存
  if(empty($_SESSION[&#39;shopcar&#39;])){
    $_SESSION[&#39;shopcar&#39;] = $arrDatax;
    header(&#39;Location:index.php&#39;);
  }else{
    //第一次购物之后的购物
    //重新取出来，防止数据覆盖
    $arrDataz = $_SESSION[&#39;shopcar&#39;];
    if(in_array($id,$arrDataz[0])){
      $arrDataz[4][$arrData[&#39;id&#39;]] += 1;
      $_SESSION[&#39;shopcar&#39;] = $arrDataz;
      header(&#39;Location:index.php&#39;);
    }else{
      $arrDataz[0][$arrData[&#39;id&#39;]] = $arrData[&#39;id&#39;];
      $arrDataz[1][$arrData[&#39;id&#39;]] = $arrData[&#39;img&#39;];
      $arrDataz[2][$arrData[&#39;id&#39;]] = $arrData[&#39;title&#39;];
      $arrDataz[3][$arrData[&#39;id&#39;]] = $arrData[&#39;price&#39;];
      $arrDataz[4][$arrData[&#39;id&#39;]] = 1;
      $_SESSION[&#39;shopcar&#39;] = $arrDataz;
      header(&#39;Location:index.php&#39;);
    }

  }
}else{
  echo "购物车没有商品!";
}

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spcar.php

<?php
if(!empty($_GET[&#39;id&#39;])){
  require &#39;common.php&#39;;
  session_start();
  $id = $_GET[&#39;id&#39;];
  //把所选ID的商品信息遍历出来
  foreach ($arrPro as $key => $value) {
    if($id == $value[&#39;id&#39;]){
    $arrData = $arrPro[$key];
    }
  }

  //用一个新的二维数组把商品信息存起来
  $arrDatax[0][$arrData[&#39;id&#39;]] = $arrData[&#39;id&#39;];
  $arrDatax[1][$arrData[&#39;id&#39;]] = $arrData[&#39;img&#39;];
  $arrDatax[2][$arrData[&#39;id&#39;]] = $arrData[&#39;title&#39;];
  $arrDatax[3][$arrData[&#39;id&#39;]] = $arrData[&#39;price&#39;];
  $arrDatax[4][$arrData[&#39;id&#39;]] = 1;
  //判断是否有SESSION存在，有则在数组后添加，没有则直接存
  if(empty($_SESSION[&#39;shopcar&#39;])){
    $_SESSION[&#39;shopcar&#39;] = $arrDatax;
    header(&#39;Location:index.php&#39;);
  }else{
    //第一次购物之后的购物
    //重新取出来，防止数据覆盖
    $arrDataz = $_SESSION[&#39;shopcar&#39;];
    if(in_array($id,$arrDataz[0])){
      $arrDataz[4][$arrData[&#39;id&#39;]] += 1;
      $_SESSION[&#39;shopcar&#39;] = $arrDataz;
      header(&#39;Location:index.php&#39;);
    }else{
      $arrDataz[0][$arrData[&#39;id&#39;]] = $arrData[&#39;id&#39;];
      $arrDataz[1][$arrData[&#39;id&#39;]] = $arrData[&#39;img&#39;];
      $arrDataz[2][$arrData[&#39;id&#39;]] = $arrData[&#39;title&#39;];
      $arrDataz[3][$arrData[&#39;id&#39;]] = $arrData[&#39;price&#39;];
      $arrDataz[4][$arrData[&#39;id&#39;]] = 1;
      $_SESSION[&#39;shopcar&#39;] = $arrDataz;
      header(&#39;Location:index.php&#39;);
    }

  }
}else{
  echo "购物车没有商品!";
}

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delete.php

<?php
session_start();
if(!empty($_GET[&#39;id&#39;])){
  $arrData = $_SESSION[&#39;shopcar&#39;];
  //判断对应的商品ID信息
    if(in_array($_GET[&#39;id&#39;],$arrData[0])){
      unset($arrData[0][$_GET[&#39;id&#39;]]);
      unset($arrData[1][$_GET[&#39;id&#39;]]);
      unset($arrData[2][$_GET[&#39;id&#39;]]);
      unset($arrData[3][$_GET[&#39;id&#39;]]);
      unset($arrData[4][$_GET[&#39;id&#39;]]);
      $_SESSION[&#39;shopcar&#39;] = $arrData;
    }
    header(&#39;Location:spcar.php&#39;);
}

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