选择COUNT个if语句

Question

Ok, so it seems like my SELECT count query doesn't work here:

<?php

    $servername = " "; 
    $username = " "; 
    $password = " "; 
    $dbname = " "; 

    // Create connection 
    $conn = new mysqli($servername, $username, $password, $dbname); 
    // Check connection 
    if ($conn->connect_error) { 
        die("Connection failed: " . $conn->connect_error); 
    } 


    if (isset($_POST['submitted1'])) {

        $result= mysqli_query("SELECT COUNT (Motspillerid) 
                              FROM SESSION 
                              WHERE Motspillerid= 3 ");
        echo $result ;
    } else {
        echo "Wrong" ;     
    }

?>

And when I press submitt nothing happens, I don't get any error message and I don't get the result. So it's something wrong with the SELECT query I guess.

I'm noob I know, I'm new to this.

:)

Answer 1

You're not calling mysqli_query() correctly, the first argument has to be the database connection object returned by mysqli_connect .

And after performing the query, you have to fetch the results using one of the mysqli_fetch_X() functions.

if (isset($_POST['submitted1'])) {

    $result= mysqli_query($conn, "SELECT COUNT(*) AS count
                          FROM SESSION 
                          WHERE Motspillerid= 3 ");
    $row = mysqli_fetch_assoc($result);
    echo $row['count'];
} else {
    echo "Wrong" ;     
}