Question

我有一个welcome.php文件，我需要从页面上的mysql数据库中获取记录到html表。
获取记录但在每个列字段后面放置一个空白字段。例如如果有6列。然后它显示12个字段。每个字段后有6个实际字段和一个空白字段。所以，html表结构enter code here也令人不安。

我使用了mysqli_fetch_array并设置了一个while循环来获取20条记录。我不确定在获取记录时是否犯了错误或者html表本身存在问题。请找到下面的代码，让我知道我在做什么错。感谢。

 <?php 
//start a session
session_start();
?>

<!DOCTYPE html>
<html>
<head>

<style>
nav ul{
    margin:0;padding:0;

}

table,th,td{
    border: 1px solid black;
    border-collapse:collapse;
    text-align:left;
    table-layout:auto;


}


nav ul li{

    display:list-item;float:left;margin:5px;
}

a:link    {color:#000000; background-color:transparent; text-decoration:underline}
a:visited {color:#000000; background-color:transparent; text-decoration:none}
a:hover   {color:#ff0000; background-color:transparent; text-decoration:underline}
a:active  {color:#ff0000; background-color:transparent; text-decoration:underline}



</style>
</head>
<body style="background-color: white;">

<?php
//Define variables 
$company=$ModelName=$ModelNo=$productcolor=$cost=$sql1=$sql2=$IMEI=$accessories=$row="";

?>

<?php
//Check the request method and take the value in all variables
if ($_SERVER["REQUEST_METHOD"]=="POST"){

$company=$_POST['Company'];
$ModelName = $_POST['ModelName'];
$ModelNo = $_POST['ModelNo'];
$productcolor = $_POST['productcolor'];
$cost =$_POST['cost'];
$IMEI=$_POST['imei'];
$accessories=$_POST['accessories'];
}


// Connect to database and get the no of rows in $num
$con = mysqli_connect("MyWebsite.localdomain","root","pwd123","test_youtube");
$sql1 = "select M_ID,CompanyName,ModelName,ModelNo,IMEI,productcolor,cost,accessories,dt from mobile_data LIMIT 20";

//check connection
if(!$con){
    echo "Failed to connect to MySQL: " . mysql_error();
}

$retval1 = mysqli_query($con,$sql1);

echo "<table style='width:100%;'><tr><th>M_ID</th><th>Company</th><th>Model Name</th><th>Model No</th><th>IMEI</th><th>Color</th><th>Cost</th><th>Accessories</th><th>Date</th></tr>";
//Show all records on the home page
//echo count(mysqli_fetch_array($retval1));
    while($row= mysqli_fetch_array($retval1)){
        echo "<tr><td>".$row["M_ID"]."<td><td>".$row["CompanyName"]."<td><td>".$row["ModelName"]."<td><td>".$row["ModelNo"]."<td><td>".$row["IMEI"]."<td><td>".$row["productcolor"]."<td><td>".$row["cost"]."<td><td>".$row["accessories"]."<td><td>".$row["dt"]."<td><tr>";
    }

echo "</table>";
// Perform the insert operation on the table when hit the submit button
if(isset($_POST['submit'])){
//$con = mysqli_connect("MyWebsite.localdomain","root","shekhar123","test_youtube");
//perform insert queries to enter the data when submit button is clicked
    $sql2 = "insert into mobile_data".
            "(M_ID,CompanyName,ModelName,ModelNo,IMEI,productcolor,cost,accessories)".
            "VALUES".
            "('$num','$company','$ModelName','$ModelNo','$IMEI','$productcolor','$cost','$accessories')";

    $retval2 = mysqli_query($con,$sql2);
    //if(!$retval2){
    //  die('Could not enter data: ' . mysql_error());  
    //}

}


mysqli_close($con);
?>
;

</body>

</html>

Answer 1

我在行中发现了错误，

echo "<tr><td>".$row["M_ID"]."<td><td>".$row["CompanyName"]."<td><td>".$row["ModelName"]."<td><td>".$row["ModelNo"]."<td><td>".$row["IMEI"]."<td><td>".$row["productcolor"]."<td><td>".$row["cost"]."<td><td>".$row["accessories"]."<td><td>".$row["dt"]."<td><tr>";

如下所示，

echo "<tr><td>".$row["M_ID"]."</td><td>".$row["CompanyName"]."</td><td>".$row["ModelName"]."</td><td>".$row["ModelNo"]."</td><td>".$row["IMEI"]."</td><td>".$row["productcolor"]."</td><td>".$row["cost"]."</td><td>".$row["accessories"]."</td><td>".$row["dt"]."</td></tr>";

html表使用php从mysql中获取行时获取额外的空白值

1 个答案: