mysqli SELECT query not working, for unknown reason [closed] - php

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Here is my php for connecting to a database and querying the table "userActivityTime", in which there is one row. I am not having trouble connecting to the database (i.e. no errors), but my query is not working, and despite looking all over the internet, I cannot figure out why. Hoping you all can help. Thanks so much in advance!
<?php
// ESTABLISH TABLE AND COLUMN NAMES
$mysqli = new mysqli("*****", "****", "*****", "****");
// MAKE SURE CONNECTION SUCCEEDED
if ($mysqli_connection->connect_error) {
echo "Not connected, error: " . $mysqli_connection->connect_error;
exit();
} else {
echo "connected";
}
$query = "SELECT 'userDailyTime' FROM 'userActivityTime'";
if ($mysqli->query($query)) {
echo $mysqli->error;
}
exit();
?>

Answer 1

use back-ticks if necessary not single quotes:
SELECT `userDailyTime` FROM `userActivityTime`
or just
SELECT userDailyTime FROM userActivityTime
Edit:
An example from the internet, worm your stuff into the concept.
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT id, firstname, lastname FROM MyGuests";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
echo "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "<br>";
}
} else {
echo "0 results";
}
$conn->close();
?>

Answer 2

You don't need to put the table and column names in quotes. You are telling it to echo $mysqli->error when the query is successful (prepend it with an exclamation mark) . Also, you create $mysqli then refer to it as $mysqli_connection, so I am not sure how your code works.

Answer 3

Try this:
<?php
// ESTABLISH TABLE AND COLUMN NAMES
$mysqli = new mysqli("*****", "****", "*****", "****");
// MAKE SURE CONNECTION SUCCEEDED
if ($mysqli->connect_errno) {
echo "Not connected, error: " . $mysqli->connect_error;
return false;
} else {
echo "connected";
}
$query = "SELECT userDailyTime FROM userActivityTime";
if (!$mysqli->query($query)) {
echo $mysqli->error;
}
return true;
?>