单击链接时保存php变量

Question

I have this code:

$raw_results = 

mysql_query("SELECT * FROM student WHERE (`idStudent` LIKE '%".$query."%') OR (`FirstName` LIKE '%".$query."%')"); 
if(mysql_num_rows($raw_results) > 0)
{
while($results = mysql_fetch_array($raw_results))
{ 

echo "<tr align='center' bgcolor='#0f7ea3'>

 <td height='25px'><a href ='editRegistration.php'> "
 .$results['idStudent']."</td> <td>".$results['FirstName']."</td>






</tr>" ;
}

What I want is to store the value of clickable link in to a php variable, so I could send it to aother page. How do I do that? Thank you

Answer 1

You may reform the link printing as:

"<a href ='editRegistration.php?id=".$results['idStudent']."'> ".$results['idStudent']."</a>" ;

This will send you to the editResgistration.php with "id"-GET value. In your editRegistration.php you can get the value by:

$id = $_GET['id'];

Answer 2

You can set whatever you like as query parameter sin a link. Ie

echo "<tr align='center' bgcolor='#0f7ea3'>
  <td height='25px'><a href ='editRegistration.php?id=" . $results['idStudent'] . "'>"
    . $results['idStudent'] . "
  </td>
  <td>".$results['FirstName']."</td>
</tr>" ;

THen your editRegistration.php can read the student's ID from $_GET['id'] .

(This assumes your ids are numbers or similar and do not need url encoding)

Answer 3

You can put it this way. And in editRegistration.php page, use $ _GET ['id']

echo "<tr align='center' bgcolor='#0f7ea3'>
  <td height='25px'>
    <a href ='editRegistration.php?id=" . $results['idStudent'] . "'>"
    . $results['idStudent'] . "
  </td>
  <td>".$results['FirstName']."</td>
</tr>" ;

editRegistration.php

$_GET['id'];