Question

It was some time ago I worked with PHP, MySQL and SQL, so I need some help. In my table I have 44 rows, but I only want to get 24 of them. Before I have just loaded all the rows like in the code below, and now I need some help to modify it to only load 24 rows. Thanks!

$query = "SELECT * FROM {$tableObject} {$sort1};";

$res = $mysqli->query($query);

$row_cnt = mysqli_num_rows($res);

while($row01 = $res->fetch_object()) {
// Some other code here
}

Answer 1

Use this in your query:

LIMIT 24

LIMIT is a MySQL function that selects a particular range of results from your query results. There are basically two ways of using it:

1. By simply specifying the number of results you want to fetch, like LIMIT 24; or
2. By specifying another range in the form of LIMIT X, Y. Where X is the beginning and Y is number of rows you want to fetch, like: LIMIT 10,5 that would select the 5 results from row 11 to 15

In your particular case you can simply replace this line:

$query = "SELECT * FROM {$tableObject} {$sort1};";

For:

$query = "SELECT * FROM {$tableObject} {$sort1} LIMIT 24;";

or even:

$query = "SELECT * FROM {$tableObject} {$sort1} LIMIT 0,24;";

For a better understanding about how to use limit, I recommend you to read this page from MySQL manual