mysqli statement does not work under php - php

Question

There's a bit problem for mysqli select statement as I did a select statement which actually counts the number of results. But it does not return the value I want but instead it returns none. Need help guys. I did this select statement as a function using mysqli and php
function count_result($data){
global $con;
$sql = "SELECT count(user_id) as userssss from credentials where user_id = '$data'";
$result = mysqli_query($con,$sql) or die('userssss');
echo "string</br>";
$row = mysqli_fetch_assoc($result,MYSQLI_ASSOC);
echo $row['userssss']."asdasd</br>";
die("userssss");
$return = $row['user'];
return $return;
}
result
string
asdasd
userssss
It should show the result before asdasd

Answer 1

add global $con;
function count_result($data){
global $con;
$sql = "SELECT count(user_id) as user from credentials where user_id = '$data'";
$result = mysqli_query($con,$sql);
$row = mysqli_fetch_assoc($result,MYSQLI_ASSOC);
echo $row['user'][0]."asdasd";
die();
$return = $row['user'][0];
return $return;
}

Answer 2

I found it. Silly of me.
Instead of using assoc, one must use array
function count_result($data){
global $con;
$sql = "SELECT count(user_id) as userssss from credentials where user_id = '$data'";
$result = mysqli_query($con,$sql) or die('userssss');
$row = mysqli_fetch_array($result,MYSQLI_ASSOC);
$return = $row['user'];
return $return;
}

Answer 3

You need to count everything meaning rows matched where clause. Also try to adopt prepared statements. Bellow code works.
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
function count_result($data){
$user = 'username';
$password = 'password';
$db = 'database';
$host = 'hostname';
$port = 3306;
/* Attempt MySQL server connection. Assuming you are running MySQL server */
$link = mysqli_connect($host, $user, $password, $db);
// Check connection
if($link === false){
die("ERROR: Could not connect. " . mysqli_connect_error());
}
if($stmt = $link -> prepare("SELECT COUNT(*) FROM test WHERE ID= ?"))
{
/* Bind parameters, s - string, b - blob, i - int, etc */
$stmt -> bind_param("i", $data);
$stmt -> execute();
/* Bind results */
$stmt -> bind_result($testfield1);
/* Fetch the value */
$stmt -> fetch();
$numberofrows = $stmt->num_rows;
} else{
echo "ERROR: Could not able to execute SQL. " . mysqli_error($link);
}
/* Close statement */
$stmt -> close();
echo '# rows: '. $numberofrows . PHP_EOL;
echo 'Count = '. $testfield1 ;
}
count_result(24);
?>

Answer 4

A silly mistake in your code :
function count_result($data){
global $con;
$sql = "SELECT count(user_id) as userssss from credentials where user_id = '$data'";
$result = mysqli_query($con,$sql) or die('userssss');
echo "string</br>";
$row = mysqli_fetch_assoc($result,MYSQLI_ASSOC);
echo $row['user']."asdasd</br>"; // did changes on this line
die("userssss");
$return = $row['user'];
return $return;
}