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Jul 4th, 2009
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Displaying LINKS based on a SESSION Variable

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Hello,

Great forum!

I have implemented a USER LOG-IN scheme in my site. Below is the code to build my session variable data:

PHP Syntax (Toggle Plain Text)
  1. //Create query
  2. 	$qry="SELECT * FROM volunteers WHERE Username='$login' AND Password='$password'";
  3. 	$result=mysql_query($qry);
  4.  
  5. 	//Check whether the query was successful or not
  6. 	if($result) {
  7. 		if(mysql_num_rows($result) == 1) {
  8. 			//Login Successful
  9. 			session_regenerate_id();
  10. 			$member = mysql_fetch_assoc($result);
  11. 			$_SESSION['SESS_MEMBER_ID'] = $member['id'];
  12. 			$_SESSION['SESS_FIRST_NAME'] = $member['First_Name'];
  13. 			$_SESSION['SESS_LAST_NAME'] = $member['Last_Name'];
  14. 			$_SESSION['SESS_ADMIN'] = $member['ADMIN'];
  15. 			session_write_close();
  16. 			header("location: Service_Dates.php");
  17. 			exit();
  18. 		}else {
  19. 			//Login failed
  20. 			header("location: login-failed.php");
  21. 			exit();
  22. 		}
  23. 	}else {
  24. 		die("Query failed");
  25. 	}

Please notice the ADMIN variable.

How would I display a LINK only if ADMIN = ADMIN (True - checkbox)? Here is some code I wan to add that test to:

PHP Syntax (Toggle Plain Text)
  1. <div align="center"><img src="/VOH/Images/logo.jpg" width="703" height="144" longdesc="http://www.dwdataconcepts.com/VOH/index.php" />
  2.   <br />
  3.   <table width="703" border="0" align="center" cellpadding="2" cellspacing="2">
  4.     <tr>
  5.         <td width="54%" height="19"><div align="left" class="style3"><a href="Service_Dates.php">Service Dates</a></div></td>
  6.  
  7.       <td width="32%"><div align="right" class="style3"><a href="Admin_Options.php">Admin Options</a><a href="Service_Dates.php"></a></span></div></td>
  8.  
  9.       <td width="14%"><div align="right" class="style3"><a href="/VOH/logout.php">Log Out</a></span></div></td>
  10.       </tr>
  11.   </table>
  12. </div>

If the SESSION::ADMIN = TRUE, then display this CODE.
Thanks!
Last edited by dwdata; Jul 4th, 2009 at 12:25 am. Reason: added more.
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Re: Displaying LINKS based on a SESSION Variable

Security is a big deal for me. I hate seeing code with holes in it and how easily it would be for someone to hack it.

I have a good login security login example I can post. If you want to see it let me know.

As for your question, just use an if statement.
PHP Syntax (Toggle Plain Text)
  1. $admin = false;
  2. if ( $_SESSION['SESS_ADMIN'] == 'ADMIN' ) { //whatever the value is in the database for an admin
  3.   $admin = true;
  4. }
Then in your script where you want something for an admin only.
PHP Syntax (Toggle Plain Text)
  1. if ( $admin ) {
  2.   echo 'html that only admins should see';
  3. }

Really the best thing to do is seperate the user and admin areas completely.
Last edited by kkeith29; Jul 4th, 2009 at 12:42 am.
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Re: Displaying LINKS based on a SESSION Variable

Click to Expand / Collapse  Quote originally posted by kkeith29 ...
Security is a big deal for me. I hate seeing code with holes in it and how easily it would be for someone to hack it.

I have a good login security login example I can post. If you want to see it let me know.

As for your question, just use an if statement.
PHP Syntax (Toggle Plain Text)
  1. $admin = false;
  2. if ( $_SESSION['SESS_ADMIN'] == 'ADMIN' ) { //whatever the value is in the database for an admin
  3.   $admin = true;
  4. }
Then in your script where you want something for an admin only.
PHP Syntax (Toggle Plain Text)
  1. if ( $admin ) {
  2.   echo 'html that only admins should see';
  3. }

Really the best thing to do is seperate the user and admin areas completely.
Thanks! But I still don't have it.

I have a page called "header.php" which I use in ALL my pages as a INCLUDE () which brings in the logo banner display and the main LINKS (which I want to dynamically display based on the SESSION::ADMIN. Here is the code:

PHP Syntax (Toggle Plain Text)
  1. <style type="text/css">
  2. <!--
  3. .style3 {font-size: 11px; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold; }
  4. -->
  5. </style>
  6.  
  7. <div align="center"><img src="/VOH/Images/logo.jpg" width="703" height="144" longdesc="http://www.dwdataconcepts.com/VOH/index.php" />
  8.   <br />
  9.  
  10. <?  
  11.   $admin = false;
  12. if ( $_SESSION['SESS_ADMIN'] == 'ADMIN' ) { //whatever the value is in the database for an admin
  13.   $admin = true;
  14. }
  15. ?>
  16.  
  17.   <table width="703" border="0" align="center" cellpadding="2" cellspacing="2">
  18.     <tr>
  19.       <td width="54%" height="19"><div align="left" class="style3">
  20.  
  21. 	  <? if ( $admin ) {echo '<a href="Service_Dates.php">Service Dates</a>';} ?></div></td>
  22. 	  <? //<a href="Service_Dates.php">Service Dates</a></div></td> ?>
  23.  
  24.       <td width="32%"><div align="right" class="style3">
  25.  
  26. 	  <? if ( $admin ) {echo '<a href="Admin_Options.php">Admin Options</a>';} ?></div></td>
  27. 	  <? //<a href="Admin_Options.php">Admin Options</a></span></div></td> ?>
  28.  
  29.       <td width="14%"><div align="right" class="style3"><a href="logout.php">Log Out</a></span></div></td>
  30.       </tr>
  31.   </table>
  32. </div>

Does this look right? Is the DOUBLE EQUALS right in your statement:

PHP Syntax (Toggle Plain Text)
  1. if ( $_SESSION['SESS_ADMIN'] == 'ADMIN' ) { //whatever the value is in the database for an admin
  2.   $admin = true;
  3. }

Is it my HTML? Sigh...
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Re: Displaying LINKS based on a SESSION Variable

Click to Expand / Collapse  Quote originally posted by kkeith29 ...

Then in your script where you want something for an admin only.
PHP Syntax (Toggle Plain Text)
  1. if ( $admin ) {
  2.   echo 'html that only admins should see';
  3. }

Really the best thing to do is seperate the user and admin areas completely.
Now I know something is wrong with the IF Statements (unless I am not understanding the right syntex: Here is my code:

PHP Syntax (Toggle Plain Text)
  1. <style type="text/css">
  2. <!--
  3. .style3 {font-size: 11px; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold; }
  4. -->
  5. </style>
  6.  
  7. <div align="center"><img src="/VOH/Images/logo.jpg" width="703" height="144" longdesc="http://www.dwdataconcepts.com/VOH/index.php" />
  8.   <br />
  9.  
  10.  
  11. <?  
  12.   $admin = false;
  13. if ( $_SESSION['SESS_ADMIN'] == 'ADMIN' ) { //whatever the value is in the database for an admin
  14.   $admin = true;
  15. }
  16.  
  17. ?>
  18.  
  19.   <table width="703" border="0" align="center" cellpadding="2" cellspacing="2">
  20.     <tr>
  21.       <td width="54%" height="19"><div align="left" class="style3">
  22.  
  23. 	  <? echo '<a href="Service_Dates.php">Service Dates</a></div></td>' ?>
  24. 	  <? //if ( $admin ) {echo '<a href="Service_Dates.php">Service Dates</a>'} ?></div></td>
  25. 	  </div></td>
  26.  
  27.  
  28.       <td width="32%"><div align="right" class="style3">
  29.  
  30. 	  <? echo '<a href="Admin_Options.php">Admin Options</a></div></td>' ?>
  31. 	  <? //if ( $admin ) {echo '<a href="Admin_Options.php">Admin Options</a>'} ?></div></td>
  32. 	  </div></td>
  33.  
  34.  
  35.       <td width="14%"><div align="right" class="style3"><a href="logout.php">Log Out</a></span></div></td>
  36.       </tr>
  37.   </table>
  38. </div>

The commented out lines are the one I am trying to get to work. The UNcomments ones are the raw hyperlinks minus the IF statement.

I'd love to conquer this before I hit the bed ;-) Thanks again.
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Re: Displaying LINKS based on a SESSION Variable

Click to Expand / Collapse  Quote originally posted by kkeith29 ...
Security is a big deal for me. I hate seeing code with holes in it and how easily it would be for someone to hack it.

I have a good login security login example I can post. If you want to see it let me know.
May I please see the login code with the security? I am currently trying to make a login system and this will help me greatly. Thanks.
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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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