缺少MYSQL的第一行数据

时间:2018-04-05 17:03:31

标签: php mysql mysqli fetch associative-array

我写了一个PHP脚本,我返回了餐馆名称,地址,电话号码,营业时间表和自定义菜单的链接。但是,即使在数据库中有一个星期一小时的条目,当我在mysqli_fetch_assoc中执行while循环时它也没有出现。这是我的代码:

<?php
session_start();
$con=mysqli_connect("root","");
$rest_id2=$_GET['id'];
$rest_id=(int)$rest_id2;
var_dump($rest_id);
$sql="SELECT * FROM restaurant WHERE restaurant_id='".$rest_id."'";
$result=mysqli_query($con,$sql);
$rows=mysqli_fetch_assoc($result);
echo '<strong>'. "Restaurant name:". '</strong><br><br>';
echo $rows['restaurant_name'];
echo "<br><br>";
echo "<strong>Address: </strong><br><br>";
echo $rows['address_1']." ".$rows['address_2']." ". $rows['city']. ", ". 
$rows['state']. " ". $rows['zip']. "<br><br>";
echo '<strong>'. "Phone number:". '</strong><br><br>';
echo $rows['phone_number']. "<br><br>";
//hours table
$sql2="SELECT * from hours WHERE restaurant_id='".$rest_id."'";
$result2=mysqli_query($con,$sql2);
$row=mysqli_fetch_assoc($result2);
echo "<table border='1' cellpadding='10'><tr><th>Open or Closed</th> . 
<th>Day</th><th>Start Time</th><th>End Time</th></tr>";
$num_rows=mysqli_num_rows($result2);
// var_dump($num_rows);
while($row=mysqli_fetch_assoc($result2)){
    // var_dump($rows);
    if ($num_rows==0){
        echo "No hours data available";
    }
    elseif($row['day']=="Closed"){
        echo "<td><strong>". $row['day']. "</td></strong><br>";
        echo "<td><strong>". $row['open_closed']. "</td></strong><br>";
        echo "<td><strong>". "-". "</td></strong><br>";
        echo "<td><strong>". "-". "</td></tr></strong><br>";
    }
    else{
        echo "<tr><td><strong>". $row['day']. "</td></strong><br>";
        echo "<td><strong>". $row['open_closed']. "</td></strong><br>";
        echo "<td><strong>". $row['start_time']. "</td></strong><br>";
        echo "<td><strong>". $row['end_time']. "</td></tr></strong><br>";
    }
  }
   echo '<a href="' . "custom_menu.php?id=" .$rows['restaurant_id']. '"'. 
   '>'."<strong>Menu specialized for you</strong>" . '<br>'. '</a>';
   ?>

还提供了我在网站上看到的内容。有谁知道为什么会这样?

  • 我的数据库中的小时表截图 Hours table screenshot from my db

  • 正在打印餐厅营业时间的数据库条目 db entries for restaurant hours being printed

  • 通过php示例2打印小时表 hours table being printed through php example 2

1 个答案:

答案 0 :(得分:2)

从代码中删除行while

while

取第一行之前取出其余记录的{{1}}循环

为什么?

在{{1}}循环之外,您调用第1行并且不打印它。这一行在输出中错过了

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