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problem retreving information from mySQL database

Discuss problem retreving information from mySQL database in the PHP Coding forum on Codewalkers.
problem retreving information from mySQL database Having problems with a PHP script you are coding? This is the place to get help!

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  #1  
Old June 13th, 2002, 10:02 PM
taiyoken taiyoken is offline
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problem retreving information from mySQL database
Hi, my name's Herb and I've been coding in php for about two months now.
I've been working on a news script that uses mysql to store the actual news and user informaion. But I'm having a problem with displaying the actual news from the database as i want it to be displayed. I was using the following code to do so:
php Code:
Original - php Code 
  1. $linkID = @mysql_connect("localhost", "", "");
  2. mysql_select_db("news", $linkID);
  3. $resultID = mysql_query("SELECT date, subject, news, status, email, username FROM updates", $linkID);
  4. for($i = 0; $i < 5; $i++)
  5. {
  6.     list($date, $subject, $news, $status, $email, $username) = mysql_fetch_row($resultID);  
  7.     print "<table width="340" border="0" cellspacing="2" cellpadding="2" align="center">";
  8.     print "<td width="50" height="50"><img src="/avatars/" . $username . ".gif" width="50" height="50" border="0" alt="://otaku online: " . $status . ": " . $username .""></td>";
  9.     print "<td height="50"><b><font face="Verdana,Geneva,Arial,Helvetica,sans-serif" size="2">" . stripslashes($subject) . "</font></b></td>";  
  10.     print "<tr align="left" valign="top">";
  11.     print "<td colspan="2" align="left" valign="top"><font face="Verdana,Geneva,Arial,Helvetica,sans-serif" size="3">..................................</font></td>";
  12.     print "</tr>";
  13.     print "<tr align="left" valign="top">";
  14.     print "<td colspan="2" align="left" valign="top"><font face="Verdana,Geneva,Arial,Helvetica,sans-serif" size="1">" . stripslashes($news) . "<br><br>" . $date . " -(<a href="mailto:" . $email . "">" . $username . "</a>)</font></td>";
  15.     print "</tr>";
  16.     print "</table><br>";
  17. }
  18. mysql_close($linkID);

The code displays the first 5 enteries made to the database. I wanted it to display the 5 most recent entries, starting with the most recent entry.
Now i've tried using mysql_num_rows($resultID) as the variable $i and then using another variable to equal 5 less than that using an expression similar to:
php Code:
Original - php Code 
  1.  
  2. $a = mysql_num_rows($resultID);
  3. $a -= 5
  4. for($i = mysql_num_rows($resutltID); $a < $i; $a++)

but i would either end up with the same results.

So, does anyone have any ideas on how i could get this script to display the 5 most recent posts?
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  #2  
Old June 13th, 2002, 10:15 PM
notepad notepad is offline
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RE: problem retreving information from mySQL database
outside of MySQL (since i have yet to learn it) you could give each news entry an ID timestamp of the date it was created, then read through each ID while storing them into an array and then sort the array from lowest to highest (the highest being the most recent update) and then reverse the array to display the top 5 :-D
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  #3  
Old June 14th, 2002, 02:10 AM
Anonymous Anonymous is offline
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RE: problem retreving information from mySQL database
use this for your query :

SELECT date, subject, news, status, email, username FROM updates ORDER BY date DESC LIMIT 5
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Old June 14th, 2002, 02:54 AM
taiyoken taiyoken is offline
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RE: RE: problem retreving information from mySQL database

Quote:
use this for your query :

SELECT date, subject, news, status, email, username FROM updates ORDER BY date DESC LIMIT 5

thank you Anonymous user! With a little bit of tweaking, my script worked perfectly! can you beleve i've spent all day trying to fix that one problem? LOL
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  #5  
Old June 22nd, 2002, 06:34 PM
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RE: problem retreving information from mySQL database
In the tutorial "Create dynamic sites with PHP & MySQL", how does one reverse the order of listing. The way there are listed now are be "id":

$result = mysql_query("SELECT * FROM personnel",$db);
echo "<TABLE BORDER=2>";
echo"<TR><TD><B>Full Name</B><TD><B>Nick Name</B><TD><B>Options</B></TR>";
while ($myrow = mysql_fetch_array($result))
{
echo "<TR><TD>".$myrow["firstname"]." ".$myrow["lastname"]."<TD>".$myrow["nick"];
echo "<TD><a href="view.php?id=".$myrow[id]."">View</a> ";
echo "<a href="delete.php?id=".$myrow[id]."">Delete</a> ";
echo "<a href="addedit.php?id=".$myrow[id]."">Edit</ a>";
}
echo "</TABLE>";
?>
</HTML>

Hellp?
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