我想从数据库表中检索值并在页面的html表中显示它们。 我已经搜索了这个，但我找不到答案，虽然这肯定是容易的（这应该是数据库的基础知识）。我想我搜索过的词语具有误导性。 数据库表名称是票证，它现在有6个字段（submission_id，formID，IP，名称，电子邮件和消息），但应该有另一个名为ticket_number的字段。 我怎样才能在html表中显示db中的所有值，如下所示：
<table border="1">
<tr>
<th>Submission ID</th>
<th>Form ID</th>
<th>IP</th>
<th>Name</th>
<th>E-mail</th>
<th>Message</th>
</tr>
<tr>
<td>123456789</td>
<td>12345</td>
<td>123.555.789</td>
<td>John Johnny</td>
<td>johnny@example.com</td>
<td>This is the message John sent you</td>
</tr>
</table>
然后是'john'以下的所有其他值。
答案 0 :(得分：74)
取自W3Schools的示例：PHP Select Data from MySQL
<?php
$con=mysqli_connect("example.com","peter","abc123","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$result = mysqli_query($con,"SELECT * FROM Persons");
echo "<table border='1'>
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['FirstName'] . "</td>";
echo "<td>" . $row['LastName'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
这是一个值得学习的好地方！
答案 1 :(得分：11)
试试这个:(完全动态......）
<?php
$host = "localhost";
$user = "username_here";
$pass = "password_here";
$db_name = "database_name_here";
//create connection
$connection = mysqli_connect($host, $user, $pass, $db_name);
//test if connection failed
if(mysqli_connect_errno()){
die("connection failed: "
. mysqli_connect_error()
. " (" . mysqli_connect_errno()
. ")");
}
//get results from database
$result = mysqli_query($connection,"SELECT * FROM products");
$all_property = array(); //declare an array for saving property
//showing property
echo '<table class="data-table">
<tr class="data-heading">'; //initialize table tag
while ($property = mysqli_fetch_field($result)) {
echo '<td>' . $property->name . '</td>'; //get field name for header
array_push($all_property, $property->name); //save those to array
}
echo '</tr>'; //end tr tag
//showing all data
while ($row = mysqli_fetch_array($result)) {
echo "<tr>";
foreach ($all_property as $item) {
echo '<td>' . $row[$item] . '</td>'; //get items using property value
}
echo '</tr>';
}
echo "</table>";
?>
答案 2 :(得分：4)
首先，连接到数据库：
$conn=mysql_connect("hostname","username","password");
mysql_select_db("databasename",$conn);
您可以使用它来显示单个记录：
例如，如果网址为/index.php?sequence=123，则下面的代码会从表中选择，其中序列为123。
<?php
$sql="SELECT * from table where sequence = '".$_GET["sequence"]."' ";
$rs=mysql_query($sql,$conn) or die(mysql_error());
$result=mysql_fetch_array($rs);
echo '<table>
<tr>
<td>Forename</td>
<td>Surname</td>
</tr>
<tr>
<td>'.$result["forename"].'</td>
<td>'.$result["surname"].'</td>
</tr>
</table>';
?>
或者，如果要列出符合表中条件的所有值：
<?php
echo '<table>
<tr>
<td>Forename</td>
<td>Surname</td>
</tr>';
$sql="SELECT * from table where sequence = '".$_GET["sequence"]."' ";
$rs=mysql_query($sql,$conn) or die(mysql_error());
while($result=mysql_fetch_array($rs))
{
echo '<tr>
<td>'.$result["forename"].'</td>
<td>'.$result["surname"].'</td>
</tr>';
}
echo '</table>';
?>
答案 3 :(得分：2)
mysql_connect("localhost","root","");
mysql_select_db("database");
$query=mysql_query("select * from studenti");
$x=@mysql_num_rows($query);
echo "<a href='file.html'>back</a>";
echo "<table>";
$y=mysql_num_fields($query);
echo "<tr>";
for($i=0 ,$i<$y,$i++)
{
$values=mysql_field_name($query,$i);
echo "<th>$values</th>";
}
echo "</tr>";
while(list($p ,$n $your_table_list)=mysql_fetch_row($query))
{
print("<tr>\n".
"<td>$p</td>".
"</tr>/n");
}
?>
答案 4 :(得分：2)
了解有关PHP和MySQLi库的更多信息at PHP.net.
首先，启动与数据库的连接。通过创建连接所需的所有字符串变量，调整它们以适合您的环境，然后使用new mysqli()创建新的连接对象并使用先前创建的变量作为其参数对其进行初始化来完成此操作。现在，检查连接是否有错误，并显示是否找到任何错误的消息。像这样：
<?php
$servername = "localhost";
$username = "root";
$password = "yourPassword";
$database = "world";
$conn = new mysqli($servername, $username, $password, $database);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully<br>";
?>
接下来，创建一个将查询保存为字符串的变量，在这种情况下，它是一个select语句，其中limit为100条记录，以使列表保持较小。然后，我们可以通过从连接对象调用mysqli::query()函数来执行它。现在，是时候显示一些数据了。首先通过<table>打开echo标记，然后以mysqli::fetch_row()的数字数组的形式一次获取一行，然后可以使用简单的for循环显示。 mysqli::field_count应该是自我解释的。不要忘记为每个值使用<td></td>，并使用echo"<tr>"和echo"</tr>打开和关闭每一行。最后，我们关闭了表格，以及与mysqli::close()的连接。
<?php
$query = "select * from city limit 100;";
$queryResult = $conn->query($query);
echo "<table>";
while ($queryRow = $queryResult->fetch_row()) {
echo "<tr>";
for($i = 0; $i < $queryResult->field_count; $i++){
echo "<td>$queryRow[$i]</td>";
}
echo "</tr>";
}
echo "</table>";
$conn->close();
?>
非常感谢任何反馈！祝你好运！
答案 5 :(得分：1)
<?php
$mysql_hostname = "localhost";
$mysql_user = "ram";
$mysql_password = "ram";
$mysql_database = "mydb";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Oops some thing went wrong");
mysql_select_db($mysql_database, $bd) or die("Oops some thing went wrong");// we are now connected to database
$result = mysql_query("SELECT * FROM users"); // selecting data through mysql_query()
echo '<table border=1px>'; // opening table tag
echo'<th>No</th><th>Username</th><th>Password</th><th>Email</th>'; //table headers
while($data = mysql_fetch_array($result))
{
// we are running a while loop to print all the rows in a table
echo'<tr>'; // printing table row
echo '<td>'.$data['id'].'</td><td>'.$data['username'].'</td><td>'.$data['password'].'</td><td>'.$data['email'].'</td>'; // we are looping all data to be printed till last row in the table
echo'</tr>'; // closing table row
}
echo '</table>'; //closing table tag
?>
它会像这样打印表格 只是逐行阅读，以便您可以轻松理解..
答案 6 :(得分：0)
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
border: 1px solid black;
}
</style>
</head>
<center>
<body>
<?php
$con = mysql_connect("localhost","root","");
mysql_select_db("rachna",$con);
$query = "SELECT SUM( Ivalue ) AS RESULT FROM loan WHERE cname = 'A' GROUP BY Iyear";
$result = mysql_query($query) or die(mysql_error());
if (mysql_num_rows($result) > 0) {
echo "<table><tr><th></th><th>1999</th><th>2000</th><th>2001</th><th>2003</th></tr>";
echo "<th>A</th>";
//Code for A Customer-------------------------------------------
while($row =mysql_fetch_array($result)) {
echo "<th>" . $row['RESULT'] . "</th>";
}
echo"<tr></tr>";
//COde of B Customer--------------------------------------
echo "<th>B</th>";
$query = "SELECT SUM( Ivalue ) AS RESULT FROM loan WHERE cname = 'B' GROUP BY Iyear";
$result1 = mysql_query($query) or die(mysql_error());
while($row = mysql_fetch_array($result1)) {
echo "<th> " . $row["RESULT"]. "</th>";
}
echo "</table>";
} else {
echo "0 results";
}
?>
</center>
</body>
</html>
答案 7 :(得分：0)
这是一种使用PDO从MySQL数据库中获取数据的简便方法。
define("DB_HOST", "localhost"); // Using Constants
define("DB_USER", "YourUsername");
define("DB_PASS", "YourPassword");
define("DB_NAME", "Yourdbname");
try { // << using Try/Catch() to catch errors!
$dbc = new PDO("mysql:host=".DB_HOST.";dbname=".DB_NAME.";charset-utf8",DB_USER,DB_PASS);
}catch(PDOException $e){ echo $e->getMessage();}
if($dbc <> true){
die("<p>There was an error</p>");
}
$print = ""; // assign an empty string
$stmt = $dbc->query("SELECT * FROM tableName"); // fetch data
$stmt->setFetchMode(PDO::FETCH_OBJ);
if($stmt->execute() <> 0)
{
$print .= '<table border="1px">';
$print .= '<tr><th>First name</th>';
$print .= '<th>Last name</th></tr>';
while($names = $stmt->fetch()) // loop and display data
{
$print .= '<tr>';
$print .= "<td>{$names->firstname}</td>";
$print .= "<td>{$names->lastname}</td>";
$print .= '</tr>';
}
$print .= "</table>";
echo $print;
}
答案 8 :(得分：0)
OOP风格： 首先与数据库连接。
<?php
class database
{
public $host = "localhost";
public $user = "root";
public $pass = "";
public $db = "db";
public $link;
public function __construct()
{
$this->connect();
}
private function connect()
{
$this->link = new mysqli($this->host, $this->user, $this->pass, $this->db);
return $this->link;
}
public function select($query)
{
$result = $this->link->query($query) or die($this->link->error.__LINE__);
if($result->num_rows>0)
{
return $result;
}
else
{
return false;
}
}
?>
然后：
<?php
$db = new database();
$query = "select * from data";
$result = $db->select($query);
echo "<table>";
echo "<tr>";
echo "<th>Name </th>";
echo "<th>Roll </th>";
echo "</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td> $row[name]</td>";
echo "<td> $row[roll]</td>";
echo "</tr>";
}
echo "</table>";
?>
答案 9 :(得分：0)
<div class="container" style="margin-top:2em;margin-bottom:33em;">
<table border="1" class="table table-striped" style="margin-top: 2em;">
<thead>
<tr>
<th>No.</th>
<th>First Name</th>
<th>Last Name</th>
</tr>
</thead>
<tbody>
<?php
// ini_set('display_errors', 1);
// ini_set('display_startup_errors', 1);
// error_reporting(E_ALL);
$servername="localhost";
$username="jaipuror_order";
$password="EEfaM?8$8tpy";
//!@#$%^&*(
$db="jaipuror_order";
$conn=mysqli_connect($servername,$username,$password,$db);
//mysql_select_db($db);
if (!$conn) {
echo "Error: Unable to connect to MySQL." . PHP_EOL;
echo "Debugging errno: " . mysqli_connect_errno($conn) . PHP_EOL;
echo "Debugging error: " . mysqli_connect_error($conn) . PHP_EOL;
exit;
}
@session_start();
$result = $conn->prepare("SELECT customer_id, first_name, last_name FROM customer");
$result->execute();
for($i=0; $row = $result->fetch(); $i++){
?>
<tr>
<td><label><?php echo $row['customer_id']; ?></label></td>
<td><label><?php echo $row['first_name']; ?></label></td>
<td><label><?php echo $row['last_name']; ?></label></td>
</tr>
<?php } ?>
</tbody>
</table>
</div>
答案 10 :(得分：0)
当然可以通过动态方式获得更好的解决方案，以便它无需知道列名即可用于任何查询？
如果是这样，请尝试以下操作：
$query = $your_query;
echo '<table border="1">';
echo '<tr>';
foreach($query[0] as $key => $value) {
echo '<td>';
echo $key;
echo '</td>';
}
echo '</tr>';
foreach($query as $row) {
echo '<tr>';
foreach($row as $column) {
echo '<td>';
echo $column;
echo '</td>';
}
echo '</tr>';
}
echo '</table>';