会议 - Webcart

Question

session_start(); 
     $aaa=$_REQUEST['bb']; 

     $_SESSION['bookrec']=array(
     'book1'=>array('callno'=>123005,'price'=>number_format(1380,2),'desc'=>'Attack on Titan Anthology','auth'=>'Scott Synder'), 
     'book2'=>array('callno'=>123006,'price'=>number_format(844,2),'desc'=>'Binge','auth'=>'Tyler Oakley'), 
     'book3'=>array('callno'=>123004,'price'=>number_format(598,2),'desc'=>'A Work in Progress','auth'=>'Connor Franta'), 
     'book4'=>array('callno'=>123003,'price'=>number_format(668,2),'desc'=>'The Amazing Book is Not on Fire','auth'=>'Dan Howell, Phil Lester'), 
     'book5'=>array('callno'=>123002,'price'=>number_format(760,2),'desc'=>'Children of Eden: A Novel','auth'=>'Joey Graceffa'), 
     'book6'=>array('callno'=>123008,'price'=>number_format(799,2),'desc'=>'Username : Evie','auth'=>'Joe Sugg'), 
     'book7'=>array('callno'=>123009,'price'=>number_format(440,2),'desc'=>'The Maze Runner','auth'=>'James Dashner'), 
     'book8'=>array('callno'=>123007,'price'=>number_format(572,2),'desc'=>'Anne Frank: The Biography','auth'=>'Melissa Muller'), 
     'book9'=>array('callno'=>123001,'price'=>number_format(699,2),'desc'=>'This Book Loves You','auth'=>'Pewdiepie') 
     ); 
     $selected=array(); 

     if($aaa=='book1') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book1']);} 
     if($aaa=='book2') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book2']);} 
     if($aaa=='book3') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book3']);} 
     if($aaa=='book4') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book4']);} 
     if($aaa=='book5') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book5']);} 
     if($aaa=='book6') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book6']);} 
     if($aaa=='book7') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book7']);} 
     if($aaa=='book8') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book8']);} 
     if($aaa=='book9') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book19']);} 

     if($aaa=='book1') {$_SESSION['bo']=$_SESSION['bookrec']['book1']['price'];} 
     if($aaa=='book2') {$_SESSION['bo']=$_SESSION['bookrec']['book2']['price'];} 
     if($aaa=='book3') {$_SESSION['bo']=$_SESSION['bookrec']['book3']['price'];} 
     if($aaa=='book4') {$_SESSION['bo']=$_SESSION['bookrec']['book4']['price'];} 
     if($aaa=='book5') {$_SESSION['bo']=$_SESSION['bookrec']['book5']['price'];} 
     if($aaa=='book6') {$_SESSION['bo']=$_SESSION['bookrec']['book6']['price'];} 
     if($aaa=='book7') {$_SESSION['bo']=$_SESSION['bookrec']['book7']['price'];} 
     if($aaa=='book8') {$_SESSION['bo']=$_SESSION['bookrec']['book8']['price'];} 
     if($aaa=='book9') {$_SESSION['bo']=$_SESSION['bookrec']['book9']['price'];} 

        foreach($_SESSION['bookrec'] as $data){ 
         if($data == $_SESSION['bookrec']['book1']) { 
          $selected[]=$_SESSION['bo']; 
          echo "<table class='w3-table w3-khaki'><tr><td>&nbsp".$_SESSION['b']."</td></tr></table>"; 
         } 
        } 
       echo "<center><b>TOTAL AMOUNT:</b> Php ".number_format(array_sum($selected),2)."</center>"; 

     ?> 

我对这个代码的问题......当我添加项目到购物车，它保留了项目到购物车，但有一个错误，说

Notice: Undefined index: bb in C:\xampp\htdocs\Webcart_ch\Webcart\mycart.php on line 85 

索引'bb'在复选框上，如果勾选了复选框，则会输出内容。我真的到了那里，但我不知道该怎么做！请帮忙..

Answer 1

我注意到了一个错字'book19'在这里： if（$ aaa =='book9'）{$ _SESSION ['b'] = implode（“”，$ _ SESSION ['bookrec'] [ “book19 ']）;}

让我知道如果这能解决它：改变 'book19' 到 'book9'

if($aaa=='book9') {$_SESSION['b']=implode("<td>",$_SESSION['bookrec']['book9']);}