Hi guys i'm quite new to PHP but I'm currently working on this site and I want it to check if the total_online_time for the user is 0 or less then it should execute the script which will create a room for the user. However after trying with this script the .php page won't load.
http://pastebin.com/XDLhFvtE
<?php
$getStats = mysql_query("SELECT total_online_time FROM `users` WHERE id = '".$_SESSION['user']['id']."'");
if ($getStats > 0)
$getRoomKit = mysql_fetch_assoc(mysql_query("SELECT * FROM room_starterkit ORDER BY RAND() LIMIT 1"));
$getRoom = mysql_fetch_assoc(mysql_query("SELECT * FROM `rooms` WHERE id = '".$randomRoomID['id']."' LIMIT 1"));
$welcomeMessage = "Welcome " . $_SESSION['user']['username'];
mysql_query("INSERT INTO `rooms` (caption,owner_id,description,model_name,wallpaper,floor) VALUES ('".$welcomeMessage."', '".$_SESSION['user']['id']."', 'Welcome to Hablore', '".$getRoomKit['room_Model']."', '".$getRoomKit['room_Wallpaper']."', '".$getRoomKit['room_Floor']."') ");
$theRoomID = mysql_fetch_assoc(mysql_query("SELECT id FROM `rooms` ORDER BY `id` DESC LIMIT 1"));
mysql_query("UPDATE `users` SET `home_room` = '".$theRoomID['id']."' WHERE `id` = '".$_SESSION['user']['id']."'");
$getRoomItems = mysql_query("SELECT * FROM room_itemkits WHERE roomKit = '".$getRoomKit['id']."'");
while($CurItem = mysql_fetch_assoc($getItems)){
mysql_query("INSERT INTO `items` (user_id, room_id, base_item, extra_data, x, y, z, rot, wall_pos) VALUES ('".$_SESSION['user']['id']."','".$lastRoomID['id']."','".$CurItem['base_item']."','".$CurItem['extra_data']."','".$CurItem['x']."','".$CurItem['y']."','".$CurItem['z']."','".$CurItem['rot']."','".$CurItem['wall_pos']."')");
}
}
?>
Related
i have a question which is my limit statement didn't work i want the content select from database and limit the show content in 40 only but it didn't work
here is my SQL statement with php code
$chatroomID=$_GET['chatroomID'];
$userID = $_SESSION['id'];
$sql="SELECT * FROM chatroom_chat WHERE chatroom_id ='$chatroomID'";
$result1 = mysqli_query($connection, $sql) or die(mysqli_error($connection));
while ($row = mysqli_fetch_array($result1)) {
$chat = $row['chat_id'];
$sql3 ="SELECT * FROM (
SELECT * FROM chat WHERE id = '$chat' ORDER BY id DESC LIMIT 0,40
) sub
ORDER BY id ASC ";
$getChatData = mysqli_query($connection,$sql3) or die(mysqli_error($connection));
/*here have statement to get username*/
while($row3 = mysqli_fetch_array($getChatData)) {
echo "<div>all content</div>";
}
}
does my code have any syntax error? i no sure why it didn't work
SELECT * FROM (
SELECT * FROM chat WHERE id = '$chat' ORDER BY id DESC LIMIT 40
) sub
ORDER BY id ASC
I have a really simple question, but unfortunately I can't figure it out myself. I have a list of 12 players which all have an (unique)ID, rating, attribute1 and attribute4. I ONLY want the row of the player with the highest rating followed by attribute1 and then attribute4. So it will first have to sort on rating, if there are 2 with rating 84, SQL will check for attribute1 etc. This is my code.
$sql = "SELECT * FROM `players_db` WHERE `id` = $player[0] OR `id` = $player[1] OR `id` = $player[2] OR `id` = $player[3] OR `id` = $player[4] OR `id` = $player[5] OR `id` = $player[6] OR `id` = $player[7] OR `id` = $player[8] OR `id` = $player[9] OR `id` = $player[10] OR `id` = $player[11] ORDER BY `rating` DESC , `attribute1` DESC, `attribute4` DESC";
$result = $conn->query($sql);
while ($row = mysqli_fetch_assoc($result)) {
echo $row['rating'];
echo '<br>';
}
I can't figure it out how to go further, as I already tryed
SELECT MAX('rating') FROM players_db WHERE ...
But then it only gets the rating of the highest player, so how can I get the whole row of the player with the highest rating followed by attribute1 and attribute4?
I hope someone can help me out! Thanks!
This query will give the record corresponding to the player with the highest rating. In the event of a tie, attribute1 and attribute4 will be used to break the tie, in that order.
SELECT *
FROM players_db
ORDER BY rating DESC, attribute1 DESC, attribute4 DESC
LIMIT 1
Use LIMIT , So that first it will sort the records by rating, then it will select the first row from top AS used LIMIT 1:
$sql = "SELECT * FROM `players_db` WHERE `id` = $player[0] OR `id` = $player[1] OR `id` = $player[2] OR `id` = $player[3] OR `id` = $player[4] OR `id` = $player[5] OR `id` = $player[6] OR `id` = $player[7] OR `id` = $player[8] OR `id` = $player[9] OR `id` = $player[10] OR `id` = $player[11] ORDER BY `rating` DESC , `attribute1` DESC, `attribute4` DESC LIMIT 1";
$result = $conn->query($sql);
while ($row = mysqli_fetch_assoc($result)) {
echo $row['rating'];
echo '<br>';
}
I got a table that contains ID, Names, message, and time, I want to select from the table only one message query from each ID, Currently I select all the messages, this is my code
$query= mysql_query("SELECT * FROM `table` ORDER BY `time`")or die(mysql_error());
while($arr = mysql_fetch_array($query)){
$num = mysql_num_rows($query);
$msg = $arr['message'];
echo '</br>';
echo $msg;
}
That Shows all messages ordered by time, Is there is a way to select only one message query from each ID?
Thanks,
Klaus
If you want only one message you can use LIMIT like this
SELECT * FROM table ORDER BY time LIMIT 1
Or if you want only one message from some id then you can use GROUP BY
SELECT * FROM table ORDER BY time GROUP BY id
Sure, pretty straightforward
This will fetch all messages given ID:
$id = 10 //Get your id in any way you need
$query= mysql_query("SELECT `message` FROM `table` WHERE `ID` = $id")or die(mysql_error());
while($arr = mysql_fetch_array($query)){
$num = mysql_num_rows($query);
$msg = $arr['message'];
echo $msg;
}
and this will fetch only the first message given ID
$id = 10
$query= mysql_query("SELECT `message` FROM `table` WHERE `ID` = $id LIMIT 1")or die(mysql_error());
$row = mysql_fetch_array($query));
if($row){
$msg = $row['message'];
echo $msg;
}else{
echo 'no messages for id '.$id;
}
I am getting a bunch of id's from the database - for each id, I want to do a mysql query to get the relating row in another table. This works fine although I also need to get similiar data for the logged in user. With the mysql query I am using - it duplicates the logged in user data according to how many id's it originally pulled. This makes sense although isnt what I want. I dont want duplicate data for the logged in user and I need the data to come from one query so I can order things with the timestamp.
<?php
mysql_select_db($database_runner, $runner);
$query_friends_status = "SELECT DISTINCT rel2 FROM friends WHERE rel1 = '" . $_SESSION ['logged_in_user'] . "'";
$friends_status = mysql_query($query_friends_status, $runner) or die(mysql_error());
$totalRows_friends_status = mysql_num_rows($friends_status);
while($row_friends_status = mysql_fetch_assoc($friends_status))
{
$friends_id = $row_friends_status['rel2'];
mysql_select_db($database_runner, $runner);
$query_activity = "SELECT * FROM activity WHERE user_id = '$friends_id' OR user_id = '" . $_SESSION['logged_in_user'] . "' ORDER BY `timestamp` DESC LIMIT 15";
$activity = mysql_query($query_activity, $runner) or die(mysql_error());
$totalRows_activity = mysql_num_rows($activity);
echo "stuff here";
}
?>
You can try this single query and see if it does what you need
$userID = $_SESSION['logged_in_user'];
"SELECT * FROM activity WHERE user_id IN (
SELECT DISTINCT rel2 FROM friends
WHERE rel1 = '$userID')
OR user_id = '$userID' ORDER BY `timestamp` DESC LIMIT 15";
You probably want something like this:
$user = $_SESSION['logged_in_user'];
$query_friends_status = "SELECT * FROM friends, activity WHERE activity.user_id = friends.rel2 AND rel1 = '$user' ORDER BY `timestamp` DESC LIMIT 15";
You can replace * with the fields you want but remember to put the table name before the field name like:
table_name.field_name
I hope this helps.
<?php
require_once "connect.php";
$connect = #new mysqli($host, $db_user, $db_password, $db_name);
$result = $connect->query("SELECT p.name, p.user, p.pass, p.pass_date_change,p.email, p.pass_date_email, d.domain_name, d.domain_price, d.domain_end, d.serwer, d.staff, d.positioning, d.media FROM domains d LEFT JOIN persons p
ON d.id_person = p.id AND d.next_staff_id_person != p.id");
if($result->num_rows > 1)
{
while($row = $result->fetch_assoc())
{
echo '<td class="box_small_admin" data-column="Imię i nazwisko"><div class="box_admin">'.$row["name"].'</div></td>';
echo '<td class="box_small_admin" data-column="Domena"><div class="box_admin">'.$row["domain_name"].'</div></td>';
}}
?>
I can't get the values in the table Accounts to decrement when I try to delete a post. The values I would like to decrement are "PostCount", "Likes Count" and "CommentsCount". Currently only the "PostCount" works.
Please can you tell me what I am doing wrong:
$arg = mysql_query("SELECT `numberOfLikes` FROM Posts WHERE `id` = '$postID'") or die(mysql_error());
$query = mysql_query("SELECT * FROM Likes WHERE `postID` = '$postID'");
while ($row = mysql_fetch_assoc($query)) {
$b = $row['accountID'];
mysql_query("UPDATE Accounts SET `numberOfLikes` = (`numberOfLikes` - 1) WHERE `id` = '$b'");
}
$arg = mysql_query("SELECT `numberOfComments` FROM Posts WHERE `id` = '$postID'");
$query = mysql_query("SELECT * FROM Posts WHERE `id` = '$postID'");
while($row = mysql_fetch_assoc($arg)) {
$b = $row['accountID'];
mysql_query("UPDATE Accounts SET `CommentsCount` = (`CommentsCount` - 1) WHERE `id` = '$b'");
}
$arg = mysql_query("SELECT `PostCount` FROM Accounts WHERE `id` = '$accountID'");
while ($row = mysql_fetch_assoc($arg)) {
mysql_query("UPDATE Accounts SET `PostCount` = (`PostCount` - 1) WHERE `id` = '$accountID'");
}
mysql_query("DELETE FROM Likes WHERE `postID` = '$postID'");
mysql_query("DELETE FROM Comments WHERE `postID` = '$postID'");
mysql_query("DELETE FROM Posts WHERE `id` = '$postID' AND `accountID` = '$accountID'") or die(mysql_error());
exit("Deleted post");
First up looping queries kills your execution time. You want to limit it to as little queries as possible, this is where implode comes into play:
// what is this for? I do not see it being used. $arg = mysql_query("SELECT `numberOfLikes` FROM Posts WHERE `id` = '$postID'") or die(mysql_error());
$query = mysql_query("SELECT * FROM Likes WHERE `postID` = '$postID'");
while ($row = mysql_fetch_assoc($query)) {
$b[] = $row['accountID'];
}
mysql_query("UPDATE Accounts SET `numberOfLikes` = (`numberOfLikes` - 1) WHERE `id` IN(" . implode(',', $b) . ")") or trigger_error('MySQL Update Failed: ' . mysql_error());
This will be much more efficient and have to same effect.
The next query, should be similar:
$arg = mysql_query("SELECT `numberOfComments` FROM Posts WHERE `id` = '$postID'");
// again an extra unnecessary query not being used. $query = mysql_query("SELECT * FROM Posts WHERE `id` = '$postID'");
$b=array();
while($row = mysql_fetch_assoc($arg)) {
$b[] = $row['accountID'];
}
mysql_query("UPDATE Accounts SET `CommentsCount` = (`CommentsCount` - 1) WHERE `id` IN(".implode(',', $b) . ")") or trigger_error(mysql_error());
This next one, I do not even know why you are looping through it:
//$arg = mysql_query("SELECT `PostCount` FROM Accounts WHERE `id` = '$accountID'");
//while ($row = mysql_fetch_assoc($arg)) {
mysql_query("UPDATE Accounts SET `PostCount` = (`PostCount` - 1) WHERE `id` = '$accountID'") or trigger_error(mysql_error());
//}
As you are not utilizing that data anywhere, just run the update query.
Implementing the above should speed up your application and reduce redundancy. implode is very handy and running 1 query vs several is almost always preferred. I am not sure if that will solve your problem, but it is a huge step in the right direction in fixing your code.
I re-coded my if statement containing the code I posted and it is now working perfectly:
mysql_query("UPDATE Accounts SET `PostCount` = (`PostCount` - 1) WHERE `id` = '$accountID'");
$query = mysql_query("SELECT * FROM Likes WHERE `postID` = '$postID'") or die(mysql_error());
while($row = mysql_fetch_assoc($query)) {
$accID = $row['accountID'];
mysql_query("UPDATE Accounts SET `Likes Count` = (`Likes Count` - 1) WHERE `id` = '$accID'");
}
$query = mysql_query("SELECT * FROM Comments WHERE `postID` = '$postID'");
while($row = mysql_fetch_assoc($query)) {
$accID = $row['accountID'];
mysql_query("UPDATE Accounts SET `CommentsCount` = (`CommentsCount` - 1) WHERE `id` = '$accID'");
}
mysql_query("DELETE FROM Likes WHERE `postID` = '$postID'");
mysql_query("DELETE FROM Comments WHERE `postID` = '$postID'");
mysql_query("DELETE FROM Posts WHERE `id` = '$postID' AND `accountID` = '$accountID'") or die(mysql_error());
exit("Deleted post");