使用PHP显示来自两个表的数据

Question

我想显示来自phpMyadmin数据库的两个表中的数据。 我有一个网站，其中有一个表单，您可以放置​​要查找的信息，然后应该从数据库中的两个表中显示此信息。我知道我必须使用SQL JOIN，我尝试了不同的方法，并且无法弄清楚。我感谢所有帮助

这里是我的PHP代码：

AND INBOUND_FLIGHT.AIRCRAFT_FROM = '$from'AND 

为

AND INBOUND_FLIGHT.AIRCRAFT_FROM = '$from' AND 

Answer 1

我：

<?php 
//connect to database: 
$con = mysql_connect("SERVER", "LOGIN", "PASS") or die("Connection Failed"); 
mysql_select_db("TABLE", $con) or die ("Connection Failed"); 

//create a PHP variable to hold the value from HTML form 
$from = $_POST['arrival']; 
$to = $_POST['destination']; 
$time = $_POST['time']; 
$tailnumber = $_POST['tailnumber']; 

$error_status = false; 

// validating input 
if (empty($_POST['arrival'])){ 
echo "Please enter the origin."; 
$error_status = true; 
} 
if (empty($_POST['destination'])){ 
echo "</br></br> Please enter the destination."; 
$error_status = true; 
} 
if (empty($_POST['time'])){ 
echo "</br></br> Please enter the date."; 
$error_status = true; 
} 
if (empty($_POST['tailnumber'])){ 
echo "</br></br> Please enter the tail number."; 
$error_status = true; 
} 

//create the query for selecting all the records which equal to the value from the form 
if(!$error_status) { 
$query = "SELECT * 
FROM INBOUND_FLIGHT 
INNER JOIN OUTBOUND_FLIGHT 
ON INBOUND_FLIGHT.TAIL_NUMBER = OUTBOUND_FLIGHT.TAIL_NUMBER 
WHERE INBOUND_FLIGHT.ARRIVAL_TIME = '$time' AND INBOUND_FLIGHT.TAIL_NUMBER = '$tailnumber' AND INBOUND_FLIGHT.AIRCRAFT_FROM = '$from'AND OUTBOUND_FLIGHT.AIRCRAFT_TO = '$to'"; 

//run query 
$result = mysql_query($query); 
// creating a table 
echo "<table border='1'> 
<tr> 
<th>ARRIVAL TIME</th> 
<th>AIRCRAFT TYPE</th> 
<th>TAIL NUMBER</th> 
<th>CREW NAME</th> 
<th>ORIGIN</th> 
<th>DESTINATION</th> 
</tr>"; 

//Print the record that matches the criteria of the query 
while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) { 
echo "<tr>"; 
echo "<td>" . $row['INBOUND_FLIGHT.ARRIVAL_TIME'] . "</td>"; 
echo "<td>" . $row['INBOUND_FLIGHT.AIRCRAFT_TYPE' ] . "</td>"; 
echo "<td>" . $row['INBOUND_FLIGHT.TAIL_NUMBER'] . "</td>"; 
echo "<td>" . $row['INBOUND_FLIGHT.CREW_NAME'] . "</td>"; 
echo "<td>" . $row['INBOUND_FLIGHT.AIRCRAFT_FROM'] . "</td>"; 
echo "<td>" . $row['OUTBOUND_FLIGHT.AIRCRAFT_TO'] . "</td>"; 
}} 
//close the connection 
mysql_close($con); 
echo "</table>"; 
?> 

Answer 2

在下面的查询部分将一个空间'$from'后它工作。

我用

SELECT * 
FROM INBOUND_FLIGHT, OUTBOUND_FLIGHT 
... 

再变回波显示

echo "<td>" . $row['ARRIVAL_TIME'] . "</td>"; 
... 
...