I have my table from post , post_id, admin_id,content,date_created,status while table comment , post_id, admin_id, content, date_posted, status. so how can notification specifically.
----this is my sample sql query that i made.-----
$result= mysql_query("SELECT admin_id from comment inner join post on post.post_id = comment.post_id where comment.status = 1 AND post.post_id = comment.post_id");
$row= mysql_fetch_array ($result);
$id=$row['admin_id'];
$commentcount = mysql_result(mysql_query("SELECT COUNT(*) from comment inner join post on post.post_id = comment.post_id where comment.status = 1 AND post.admin_id = $id"),0);
if ($id == $id_session) {
echo $commentcount;
}
else {
//echo $postcount;
}
i am looking forward to hear from you guys. i am a student/new member on this so please keep your answer as simple as possible. thank you.
Related
I have 2 table's:
Users (id, username, email, avatar, etc...);
Friends (id, user1, user2, status);
Now I want to build on my profile page an list of my friends with there avatar(s). I'm trying for like 4 hours by myself but i don't get it... :(
BTW: this is an error i got!
Notice: Array to string conversion in /home/reduaqi158/domains/reduankurtaj.eu/public_html/snapfriends/vrienden.php on line 26
This is what i have right now:
<?php
error_reporting(E_ALL);
session_start();
$username = $_SESSION['username'];
$status = 2;
include "includes/conn.php";
$vrienden=mysqli_query($server,"SELECT * FROM vrienden WHERE status='$status' && vriend1='$username' || vriend2='$username' ");
$vriend_list = array();
while($row = mysqli_fetch_array($vrienden))
{
if ($row['vriend1'] == $username) {
$vriend_list[] = $row['vriend2'];
}
else {
$vriend_list[] = $row['vriend1'];
}
}
echo json_encode($vriend_list);
$foto=mysqli_query($server,"SELECT prof_pic FROM users WHERE username='$vriend_list['vriend1''vriend2']' ");
while($row2 = mysqli_fetch_array($foto)) {
echo "<img class='img-rounded' src=assets/profiel/".$row2['prof_pic']." alt='Card image cap'>";
}
?>
json_encode output:
["ja","amando"]
Someone who can help me pls :)
Your initial approach is very confusing.
Almost everything in your code can be substituted by single SQL query.
You can use JOIN to get all your friends with their avatars in one go:
SELECT u.username as username, u.avatar as avatar,.... <== all columns which you need
FROM `friends_table` f <== your friends table
JOIN `users_table` u <== your users table
ON (f.user1 = u.id) <== notice that i join on user1 column
WHERE u.username = '$username' && f.status = '$status'
UNION
SELECT u.username as username, u.avatar as avatar,.... <== same columns
FROM `friends_table` f <== your friends table
JOIN `users_table` u <== your users table
ON (f.user2 = u.id) <== notice that i join on user2 column
WHERE u.username = '$username' && f.status = '$status'
By this query you select all users who are in a friendship with your $username. You need union because you don't know in which field (user1 or user2) your $username is located.
NOTE: I strongly suggest using prepared statements instead of just putting '$var' inside SQL query to prevent SQL Injection.
After executing this query you can parse results and display avatars in such a way:
while($row = mysqli_fetch_array($vrienden, MYSQLI_ASSOC))
{
echo "<img class='img-rounded' src=assets/profiel/".$row['avatar']." alt='Card image cap'>";
}
I hope you got the idea.
in your while statement you have to declare a value for the array. like array[0] = value. so that you know that array position 0 has a certain value. Like what I did here below. Don't know if it's in PHP like this but certain in .net you have to declare the location of a value in an array.
while($row = mysqli_fetch_array($vrienden))
{
if ($row['vriend1'] == $username) {
$vriend_list[0] = $row['vriend2'];
}
else {
$vriend_list[1] = $row['vriend1'];
}
}
and the following
$foto=mysqli_query($server,"SELECT prof_pic FROM users WHERE username='$vriend_list['vriend1''vriend2']' ");
shouldn't it be $vriend_list['vriend1'] . $vriend_list['vriend2']'
you have to use a connect character (the . in PHP)
can somebody help me?
here is my php script...
$req = mysql_query('SELECT id, email, start_date, end_date, time_event, time_submitted, payment_method, status FROM booking_members WHERE status="Canceled"');
while($dnn = mysql_fetch_array($req))
$req1 = mysql_query('DELETE FROM booking_members WHERE id='$id');
while($dnn1 = mysql_fetch_array($req1))
{
<td class="left"><center>
<img src="images/cross.png"></img>
</td></center>
how can i get the id from $dnn['id'] in order to delete rows?
Why not just run the delete directly?
DELETE FROM booking_members WHERE status='Cancelled'
There is absolutely no reason to first select all the id's and then loop through them all deleting rows one at a time.
Mike Brant is exactly right; You should delete them without doing a lookup first. But if you wanted to access the id, you'd use:
// ... PREVIOUS
while ($dnn = mysql_fetch_array($req)) {
$delete_id = $dnn['id'];
$req1 = mysql_query("DELETE FROM booking_members WHERE id='".$delete_id."'");
// ... CONTINUE
while($dnn = mysql_fetch_array($req))
Where is the { ?
And here:
$req1 = mysql_query('DELETE FROM booking_members WHERE id='$id');
If you want the id, of last query, you must do: $dnn['id'] and not $id ( or you set $id before)...
And, for include a HTML script, in PHP script, you must use echo or print or must close the tags php ( ?> )
If you want to do a look up, and im assuming you are using dot net nuke, download the free reports module. After installing it edit it and type in the following select statement:
Select u.id,
u.username,
u.email,
b.start_date,
b.end_date,
b.time_event,
b.time_submitted,
b.payment_method,
b.status
FROM users as u
Join
booking_members as b on u.userid = b.userid
Where status="Canceled"'
this will show you the username, email, start_date, End_date, Time_event, Time_submitted, Payment_method and status of users where there status is canceled...
I am attempting to count comments on a particular page with the following problematic sql query:
$query = "SELECT * FROM `comments` WHERE is_approved = '1' AND page_id = '943'"
$query = mysql_query($query);
$total = mysql_num_rows($query);
echo $total;
the problem is it is outputting 0 and not 2.
The tables are as follows:
pages:
id:1 page_id:943
id:2 page_id:978
id:3 page_id:977
comments:
id:2 page_id:1 "hello"
id:3 page_id:1 "great"
id:4 page_id:3 "super"
So really the original query should be getting each comment's true page_id from the page_id as set in the pages tables, as joined by comments.page_id = pages.id
What would the final code look like to either make that join, and/or get that count? Thank you.
Try:
SELECT c.* FROM `comments` c
JOIN `pages` p on c.page_id = p.id
WHERE c.is_approved = '1' AND p.page_id = '943'
"SELECT * FROM comments, pages WHERE comments.page_id = pages.id AND is_approved = '1' AND comments.page_id = '943'"
Try using:
SELECT count(*) as cnt
FROM `comments` c join pages p on c.page_id = p.id
WHERE c.is_approved = '1' AND p.page_id = '943'
It seems like a very poor database design to have two columns with the same name in different tables that mean different things. You should probably change the name of pages.page_id to something else.
And, this returns the count directly, so you can read the value from the row. If you just want the count, there is no reason to return all the matching rows.
no join is needed:
$query = "SELECT * FROM `comments` WHERE is_approved = '1' AND WHERE page_id IN (SELECT id WHERE page_id = '943')"
$query = mysql_query($query);
$total = mysql_num_rows($query);
echo $total;
ofcourse i would suggest a count statement if you do not need/use the data:
$query = "SELECT COUNT(*) as total FROM `comments` WHERE is_approved = '1' AND WHERE page_id IN (SELECT id WHERE page_id = '943')"
$result = mysql_query($query);
$row = mysql_fetch_assoc($result);
$total = $row['total'];
echo $total;
Could I somehow only use only 1 sql query for this?
showthread.php
// Get Topic subject etc
$threadID = isset($_GET['threadID']) ? intval($_GET['threadID']) : 0;
$result = mysql_query("SELECT * FROM topics WHERE id = $threadID");
// Fetch rows
$row = mysql_fetch_assoc($result);
$subject = htmlspecialchars($row['subject']);
echo '<h2>'.$subject.'</h2>';
// Get posts that belong to this topic!
$posts = mysql_query("SELECT * FROM posts INNER JOIN users ON users.id = posts.user_id WHERE posts.topic_id = $threadID");
// posts.....
while ($post = mysql_fetch_assoc($posts)) {
echo '<br>'.$post['message'].'';
}
From my understanding, you should be able to get all the information you need from something like this? (Plus or minus any missing columns)
SELECT topics.subject, posts.message
FROM posts
INNER JOIN users ON users.id = posts.user_id
INNER JOIN topics ON topics.id = posts.topic_id
WHERE posts.topic_id = $threadID
Use mysqli
Use real_escape_string
Use Prepared statement or PDO
I dont know where to start let me make it simple...
I have 2 tables posts and comments, posts consisting 2 fields: id and post_name and comments consisting of 3 fields: id, comment and post_id. I have some posts with few comments on those.
How can I display all posts with the related comments using while loop?
Thanks in advance....
SELECT `p`.`post_name`, `c`.`comment`
FROM `posts` AS `p`
JOIN `comments` AS `c` ON(`p`.`id` = `c`.`post_id`)
GROUP BY `p`.`id`;
This will give you a resultset where each row contains a comment and the name of the post that goes with that comment.
You'll need a nested loop to accomplish what you are looking for. Here's a sample that should help get you started.
$posts_result = mysql_query("SELECT your, columns FROM poststable");
if(mysql_num_rows($posts_result) > 0){
$comments_result = mysql_query("SELECT comments FROM commentstable WHERE comments.post_id = $post_id");
while($post = mysql_fetch_array($posts_result){
// print post details
if(mysql_num_rows($comments_result) > 0){
while($comment = mysql_fetch_array($comments_result)) {
// print comment details
}
} else {
// print comments default for when there are no comments
}
} // End posts while
} else {
// print no posts found
}
Run query
select * from posts p, comments c where p.id=c.post_id group by p.id;
and iterate over the results and display them as you want.
This should get you started:
$sql = 'SELECT c.*, p.post_name FROM posts p INNER JOIN comments c ON p.id = c.post_id ORDER BY p.id DESC, c.post_id DESC';
$result = mysql_query($sql);
$previous_post = 0;
while ($data = mysql_fetch_assoc($result)) {
if ($previous_post != $data['post_id']) {
echo '<h1>' . $data['post_name'] . '</h1>';
$previous_post = $data['post_id'];
}
echo '<p>' . $data['comment'] . '</p>';
}