PHP and MySQL: Order by most recent date and limit 10
I am building a notes system on my site and I've got to the stage where users can post notes into the MySQL database using PHP and then PHP prints t开发者_C百科hem out on a page. However, when they print/echo out, the oldest one appears first but I want the most recent first. I also want them to be limited to 10, so only 10 appear on the page. Here is my PHP code, your help will be much appreciated:
// initialize some variables
$notedisplaylist = "";
$myObject = "";
$result = mysql_query("SELECT * FROM notes WHERE note_author_id='$u_id' ORDER BY date_time");
while($row = mysql_fetch_array($result)){
$note_title = $row["note_title"];
$note_body = $row["note_body"];
$date = $row["date_time"];
$notedisplaylist .= '<h2>' . $note_title . '</h2><br /><p>' . $note_body . '</p><hr /><p>Noted: ' . $date . '</p><hr /><br />';
}
This should do it :
$result = mysql_query("SELECT * FROM notes WHERE note_author_id='$u_id' ORDER BY date_time DESC LIMIT 0, 10");
use:
SELECT * FROM notes WHERE note_author_id='$u_id' ORDER BY date_time DESC LIMIT 10
DESC : descending order ( from newest to oldest ) LIMIT 10: first 10 records found.
Try
$result = mysql_query("SELECT * FROM notes WHERE note_author_id='$u_id' ORDER BY date_time DESC LIMIT 10");
For a more detailed explanation on ORDER
and LIMIT
, visit the MySQL doc's articles about sorting rows and the basic select syntax (look for a bullet describing LIMIT
).
give like
ORDER BY date_time DESC
otherwise you are sorting them in ascending order.. thats why older ones come first
Do this
$result = mysql_query("SELECT * FROM notes WHERE note_author_id='$u_id' ORDER BY date_time DESC LIMIT 0, 10");
If in case you want your LIMIT to be a variable, here I named it $limit:
"SELECT * FROM tbl ORDER BY input_date DESC LIMIT 0, $limit";
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