我正在php中创建一个医学相关网站。当患者登录时，他没有发布任何内容，但他刷新了页面，查询再次检索已经插入的旧记录这是我的代码Patient_dashboard.php
<?php
session_start();
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$ufn = "";
$uln = "";
$q2 = "";
$post="";
$query;
$query2="";
$connection = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $connection )
{
die('Could not connect: ' . mysql_error());
}
$database = mysqli_select_db($connection,"medical_network");
if (!$database) {
die("Database selection failed: " . mysql_error());
}
if(!isset($_SESSION['username'])) {
header('Location: index.php');
}
require_once("Functions/functions.php");
$posts = get_user_posts($_SESSION['id']);
$uploadDir = 'Reports Images/'; //Image Upload Folder
if(isset($_POST['submit'])&& !empty($_POST['submit'])){
$fileName = $_FILES['image']['name'];
$tmpName = $_FILES['image']['tmp_name'];
$fileSize = $_FILES['image']['size'];
$fileType = $_FILES['image']['type'];
$filePath = $uploadDir . $fileName;
$filename = $fileName;
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$date = date_create();
$fileName= date_timestamp_get($date).".".$ext;
$filePath = $uploadDir . $fileName;
$result = move_uploaded_file($tmpName, $filePath);
if(!get_magic_quotes_gpc())
{
$fileName = addslashes($fileName);
$filePath = addslashes($filePath);
}
$post = mysqli_real_escape_string($connection,($_POST['np_text']));
//$date = date("Y/m/d");
date_default_timezone_set('Asia/Karachi');
$date = date('Y-m-d H:i:s');
//echo $date;
$query = "INSERT INTO post ";
$query .= "(p_pic,p_content,p_date,u_id) VALUES (";
$query .= "'{$filePath}','{$post}','{$date}','{$_SESSION['id']}');";
//echo $query . " " .$date;
$result_set = mysqli_query($connection,$query);
if (!$result_set) {
die("Database query failed: " . mysqli_error($connection));
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Medical Network</title>
<link href="css/custom.css" rel="stylesheet" />
<script>
function performClick(node) {
var evt = document.createEvent("MouseEvents");
evt.initEvent("click", true, false);
node.dispatchEvent(evt);
}
</script>
</head>
<body>
<div class="topmenu">
<div class="search">
<form>
<input type="text" placeholder="Search" value="">
</form>
</div>
<div id='cssmenu'>
<ul>
<li><a href='#'><span>Home</span></a></li>
<li><a href='#'><span>Profile</span></a></li>
<li><a href='logout.php'><span>Logout</span></a></li>
</ul>
</div>
</div>
<div class="main">
<div class="left-colum">
<div class="profileinfo">
<div class="profilepic">
<?php echo "<img class='getPic' src='{$_SESSION['pic']}' />" ?>
</div>
<div class="personal-info">
<ul>
<li><a href='#'><span><?php echo $_SESSION['fname']." ".$_SESSION['lname']; ?></span></a></li>
<li><a href='#'><span>Edit Profile</span></a></li>
</ul>
</div>
</div>
<div class="importantlinks">
<h4>Important Links</h4>
<ul>
<li><a href='#'><span>Make Appointment</span></a></li>
<li><a href='#'><span>Search Doctor</span></a></li>
<li><a href='logout.php'><span>Logout</span></a></li>
</ul>
</div>
<div class="pages">
<h4>Pages</h4>
</div>
</div>
<div class="middle-colum">
<div id="feeds">
<div class="new-post">
<ul>
<form method="post" action="patient-dashboard.php" enctype="multipart/form-data">
<li><a href="#"><label for="newpostfield"><img src="images/status.png" width="14" height="14"> Update Status</label></a></li>
<li><a href="#"> <img src="images/photo.png" width="14" height="14"> Add Photo </a>
</li>
<input type="file" id="myFile" name="image" size="4
000000" accept="image/gif, image/jpeg, image/x-ms-bmp, image/x-png" />
</ul>
<br />
<textarea rows="1" cols="40" id="newpostfield" name="np_text" placeholder="Whats on your mind ?" required="required" ></textarea>
<input type="submit" value="Post" name="submit" id="postbtn"/>
</form>
</div><!--End of feed-item -->
<br />
<div class="posts-feed">
<h3 id="postsheading" class="post-heading">Posts</h3>
<?php while($post = mysqli_fetch_array($posts)){
$counter = 0;
?>
<div class="post">
<div class="poster-pic">
<?php echo "<img src='{$_SESSION['pic']}' height='60' width='60' />" ?>
</div><!--End of poster-pic -->
<div class="post-content">
<div id="poster-name"><a href="profile.php"><?php echo $_SESSION['fname']." ".$_SESSION['lname']; ?></a><span></span></div>
<div id="content">
<p id="post-text">
<?php
echo $post['p_content']."<br/>";
$img = $post['p_pic'];
echo "<a href='#'> <img src='{$post['p_pic']}' height='300' width='300' >"
?>
</p>
</div><br />
<div id="post-responses" class="top-border">
<a href="#">Comment</a>
</div>
</div><!--End of post-content -->
</div><!--End of post -->
<?php $counter++;
} ?>
</div><!--End of feeds -->
</div>
<div class="right-colum">
<div class="heading">
<h4>Recommended Pages</h4>
</div>
</div>
</body>
</html>
这是function.php，我在这里检索记录。
<?php
function get_user_posts($id) {
global $connection;
$query2 = "SELECT p_pic, p_content,u_id ";
$query2 .= "FROM post ";
$query2 .= "WHERE u_id= " . $id ." ";
$query2 .= "ORDER BY p_id DESC ";
$query2 .= "LIMIT 5";
$result_set1 = mysqli_query( $connection,$query2);
if (!$result_set1) {
die("Database query failed: " . mysqli_error($connection));
}
// REMEMBER:
// if no rows are returned, fetch_array will return false
if ($result_set1) {
return $result_set1;
} else {
return NULL;
die("query faild..... in get post");
}
}
?>
您在if语句外调用$posts = get_user_posts($_SESSION['id']);，因此它在每次重新加载时都会显示记录，并获取数据。如果你想只在记录被张贴时显示，那么把它放在if语句中
if(isset($_POST['submit'])&& !empty($_POST['submit'])){
//your code
$posts = get_user_posts($_SESSION['id']);
}
请检查变量是否可用。
请更改输入名称属性
它应该是：
使用除提交以外的任何名称
也会改变if（isset（$_POST[‘submit’]）&！空（$_POST[‘submit’]））｛