从选中的复选框的数据库中选择全部

Question

下面给出的代码显示主页中的所有产品..每个产品都有一个复选框..我想选择少数产品的复选框，如果我点击提交，接下来的页面没有查看所选的复选框会导致

$sql = mysql_query("SELECT * FROM products ORDER BY date_added DESC LIMIT 15"); 
$productCount = mysql_num_rows($sql); // count the output amount 
if ($productCount > 0) { 
    $colindex = 1; 
    $totcols = 3; 
    $rowclosed = false; 
    //$totrows=ceil($count/$totcols); 
    $dynamicList .= "<dl id='Searchresult'> <form action='selected.php' method='POST'> <table width=\"50%\" border=\"0\" cellspacing=\"0\" align=\"center\" cellpadding=\"3\">"; 
    while ($row = mysql_fetch_array($sql)) { 

     $id = $row["id"]; 
     $product_name = $row["product_name"]; 
     $price = $row["price"]; 
     $date_added = strftime("%b %d, %Y", strtotime($row["date_added"])); 
     if ($colindex == 1) { 
      $dynamicList .= "<tr>"; 
      $rowclosed = false; 
     } 

     $dynamicList .= '<td width="142" valign="top" align="center"> 
        <div id="products"> 
         <div class="product"> 
          <a href="product.php?id=' . $id . '"> <img style=" 1px solid;" src="inventory_images/' . $id . '.jpg" alt="' . $product_name . '" width="100" height="100" border="0" /></a><div class="pr-info"><h4>' . $product_name . '</h4> 
          <input type="checkbox" name="check[]" value="<?php .$id. ?>"/> 
         </div> 
        </div></td>'; 
    } 
} 

下面的代码是我用来从选定的复选框的数据库中的数据

foreach ($_POST['check'] as $k => $check) { 
    $where[ ] = $k . " = '" . mysql_real_escape_string($check) . "'"; 
} 
include "storescripts/connect_to_mysql.php"; 
$sql = mysql_query("Select * from products where " . implode(' AND ', $where)); // Connect to the MySQL database 
$productCount = mysql_num_rows($sql); // count the output amount 
if ($productCount > 0) { 

    while ($row = mysql_fetch_array($sql)) { 

     $id = $row["id"]; 
     $product_name = $row["product_name"]; 
     $price = $row["price"]; 
     $details = $row["details"]; 
     $date_added = strftime("%b %d, %Y", strtotime($row["date_added"])); 
     $dynamicList .= '<td width="142" valign="top" align="center"> 
          <div id="products"> 
           <div class="product"> 
            <a href="printer.php?id=' . $id . '"> 
             <img style=" 1px solid;" src="inventory_images/' . $id . '.jpg" alt="' . $product_name . '" width="200" height="200" border="0" /> 
            </a> 
           <div class="pr-info"><h4>' . $product_name . '</h4><p>' . $details . ' </p> 

            <span class="pr-price"><span>Rs.</span><sup>' . $price . '</sup></span> 
           </div> 
           </div></td>'; 
    } 
} else { 
    echo "That item does not exist."; 
    exit(); 
} 

Answer 1

试着改变你的第二个代码开头对此：

include "storescripts/connect_to_mysql.php"; 
$sql = mysql_query('SELECT * FROM products WHERE id IN ('.implode(', ', array_values($_POST['check'])).')'); 
// rest of your code, beginning at $productCount = ... 

但是，如何说之前，你应该开始使用PDO！

Answer 2

我觉得你最终查询和代码应该是这样......请改变你的代码，这... ...和后的结果：

foreach($_POST['check'] as $k){ 
$where[]= $k;} 
var_dump($where); //it show you something, show me the var_dump result ??? 
include "storescripts/connect_to_mysql.php"; 
$query = "Select * from products where id IN(".implode(",",$where).")"; 
echo $query; //this line too....show me the result 
$sql = mysql_query($query);  
// Connect to the MySQL database 
$productCount = mysql_num_rows($sql); 
//the rest of your code ;) 

----------- ------------ EDITED --------------------------------

Your问题是，在这条线：

<input type="checkbox" name="check[]" value="<?php .$id. ?>"/> 

这条线是错误的，使这一变化，并看看它是如何工作的：

<input type="checkbox" name="check[]" value="<?php echo $id;?>"/> 

Saludos;）