Question

实际上，我想根据以下条件从我的表中获取数据， table包含5列，name，user_id，role，reporting_manager，password。我为了给角色写了一个Html页面。

  <html>
<head>
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title><!--Dquip--></title>
<link href="http://fonts.googleapis.com/css?family=Abel|Arvo" rel="stylesheet" type="text/css" />
<link href="style.css" rel="stylesheet" type="text/css" media="screen" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="jquery.dropotron-1.0.js"></script>
<script type="text/javascript" src="jquery.slidertron-1.0.js"></script>
<style>
label
{
    display:inline-block;
    width:150px;
    margin-right:10px;
    text-align:;
}
table,tr,th,td
{
  border: 2px solid dodgerblue;
  border-collapse: separate;
}
table
{
  width:75%;
  margin-top: 8%;
}
th,td
{
  height: 50px;
}
td
{
  text-align:center;
  vertical-align: middle;
}
.button
{
    width:75px;
    height: 25px;
    background-color:dodgerblue;
    color:white;
    border:1px solid transparent;
}
</style>
<center>


</head>
<body>
<h4 align="right"><a href="loginpage.php">Logout</a></h4>
<body>
<div id="wrapper">
    <div id="header-wrapper">
        <div id="header">
            <div id="logo">
                <h1><a href="#">Dquip..</a></h1>

            </div>
        </div>
        <div id="menu-wrapper">
            <ul id="menu">
                <li class="current_page_item"><a href="calenderindex.html"><span>Homepage</span></a></li>
                <li><span>Blog</span>
                    <ul>
                        <li class="first"> <a href="index">About US</a> </li>
                        <li> <a href="search">Function Area</a> </li>
                        <li class="last"> <a href="about">Contact US</a> </li>
                    </ul>
                </li>
                <li><a href="#"><span>Photos</span></a></li>
                <li><a href="#"><span>About</span></a></li>
                <li><span>Links</span>
                    <ul>
                        <li class="first"> <a href="index.php">Add Details</a> </li>
                        <li> <a href="map.php">Map view</a> </li>
                        <li class="last"> <a href="fetchinghome.php">view Details</a> </li>
                    </ul>
                </li>
                <li><a href="#"><span>Contact</span></a></li>
            </ul>
            <script type="text/javascript">
            $('#menu').dropotron();
        </script> 
        </div></br>
        <h1><font color="white">Enter the dates to retrieve the data</font></h1></br></br>
<form method="POST" action="fetchinghome.php">
<label>Your user ID       :</label><input type="text" name="role" placeholder="Enter the starting date"> 

<input type="submit" id="submit" name="submit" value="Go" class="button">
</form>
</body>
</html>

<?php
//include "loginpage.php";
if ($_SERVER["REQUEST_METHOD"] == "POST") 
{
    if(isset($_POST['submit']))
    {
   $servername = "localhost";
   $username = "root";
   $password = "";
   $dbname = "calender";
   $role=$_REQUEST['role'];


   $conn = mysqli_connect($servername, $username, $password, $dbname);



   if(! $conn )
   {
      die('Could not connect: ' . mysqli_error());
   }

       $sql="SELECT * FROM registration where reporting_manager='$role'";

   $retval = mysqli_query( $conn,$sql );

   if(! $retval )
   {
      die('Could not get data: ' . mysqli_error($conn));
   }



       echo "<table id='example' class='display' cellspacing='0' width='100%'>
          <tr>

            <th>Name</th>
            <th>Email</th>
            <th>Mobile Number</th>
            <th>Address</th>
            <th>Role</th>
            <th>Action</th>
            </tr>";

   while($row = mysqli_fetch_array($retval))
    {
        echo "<tr><td>";
        echo $row[0]."</td><td>";
        echo $row[1]."</td><td>";
        echo $row[2]."</td><td>";
        echo $row[3]."</td><td>";
        echo $row[4]."</td>";

        echo "</tr>";
    }
    echo "</table>";


   }

   echo "Fetched data successfully\n";

   mysqli_close($conn);
}   

?>

如果我以管理员身份角色，则需要显示数据库中的所有数据。如果我将角色作为manager1，则显示其reporting_manager为manger1的用户的数据加上manager1个人的详细信息。如果我作为user1角色，只获取该用户详细信息。是否可以使用if else在mysql中编写此查询。如果有人对此有任何想法，请告诉我。

Answer 1

你可以在条件中设置$ sql变量，例如

if ($role == 'admin')
{
    $sql="SELECT * FROM registration";
}
else
{
    $sql="SELECT * FROM registration where reporting_manager='$role'";
}

在mysql中获取查询

1 个答案: