This While loop is Driving me Crazy - php

Question

I want to simply display something using a while loop with php, but it is not working.
Here is the code -
<?php
mysqli_select_db($connect,"users");
$select_title = "select title, message from messages where user = '$u' LIMIT 4 ";
$querying = mysqli_query($connect,$select_title) or die ('Whops! Something went wrong.');
$line = mysqli_fetch_assoc($querying);
//$title = mysqli_real_escape_string($connect,trim($line['title']));
while(($rows = mysqli_fetch_assoc($querying)))
{
echo $rows['title'];
}
?>
Now I have two titles, but only one is being displayed. Why so?

Answer 1

You have fetched one row here:
$line = mysqli_fetch_assoc($querying);
The cursor will be moved to the next row, hence
while(($rows = mysqli_fetch_assoc($querying)))
{
echo $rows['title'];
}
will display the second row only.
The best solution is simply comment that line:
//$line = mysqli_fetch_assoc($querying);

Answer 2

Delete this line:
$line = mysqli_fetch_assoc($querying);

Answer 3

Comment this line will solve your problem
//$line = mysqli_fetch_assoc($querying);

Answer 4

... because you fetch the first title with the line $line = mysqli_fetch_assoc($querying); but never echo it and then start a loop to go through the rest of the titles.
Delete/uncomment the line and you should be fine.

Answer 5

you already fetch one record with
$line = mysqli_fetch_assoc($querying);
so there is only one left in while

Answer 6

Debug
My MySQL is a bit rusty(Long time ago since I used SQL => Moved to NoSQL camp...), but this is what I would do:
First I would test if query returns correct result using phpmyadmin console or just mysql console from commandline.
But I guess the query is correct because a lot of people are saying that
$line = mysqli_fetch_assoc($querying);
is already fetching a row. But still you could use it for debugging purposes I guess.
PDO
Also I would like to point out you should PDO instead of mysqli(almost deprecated I guess). PDO prepared statements also protect you against SQL-injections and could be faster because it is precompiled.

Answer 7

Every time you call mysqli_fetch_assoc() you "take" one record from the result set. When there are no more records, mysqli_fetch_assoc() returns false. This is, by the way, the reason you can use while loop.
When you called $line = mysqli_fetch_assoc($querying);, you took one record from the result set, leaving only 1 in the result set. So your while loop iterates over this one record only. As everyone else pointed out - you just need to comment that line.
I can also recommend using mysqli_fetch_all() function, this will give you an ordinary array that you can use, well, like a normal array
$results = mysqli_fetch_all($querying, MYSQLI_ASSOC);