While to check something in the database [closed] - php

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I want to check if I have an hour in the database but If I have more than hour in the database it outputs twice, if I have 3 three times...
In this specific case this gives me: 9 (in blue color) and then 9 (in red color)
$result = mysqli_query($con, 'SELECT * FROM consulta
WHERE professional=1
AND client=0');
while ($row = mysqli_fetch_array($result)) {
if ($row['hora']=='09:00:00') { echo '<p class="blue">9</p>'; }
else { echo '<p class="red">9</p>'; }
}
I have a MySql database with columns: id, professional and hour. I have stored 2 hours and this is what I get if I echo $row['hora'] 09:00:00 and 10:00:00
In this case the if should give me just 9 in blue because it is in the database. I do not understand why it happens. How can I solve this?
This is the structure of the MySql database:

Answer 1

Presumably you are building up a calendar or the like.
The query you are using is returning all rows (and you are looping over each row, regardless of the hour). If you want to check if specific hours exist you could build up an array of hours:
$result = mysqli_query($con, 'SELECT * FROM consulta
WHERE professional=1
AND client=0');
$hours = array();
while ($row = mysqli_fetch_array($result)) {
$hours[$row['hora']] = $row;
}
Now to check a specific hour we can do:
if (!empty($hours['09:00:00'])) {
echo '<p class="blue">9</p>';
}else {
echo '<p class="red">9</p>';
}
Edit: Explanation
In the first loop we are building up an array. This will look like:
$hours = array(
'08:00:00' => $dataForThisRow,
'09:00:00' => $dataForThisRow
);
In the above '08:00:00' is called a key. Each key is a time that was found in the database.
To check if there is an entry in the database for our time we can check if there is a non empty key. Hence we use:
if(!empty($hours['09:00:00'])
This if will run if $hours has a key with the value '09:00:00'. If there is no key then the other part of the if will run.

Answer 2

You are comparing with this value: 09:00:00, but the database seems to have stored this other: 9:00:00

Answer 3

Change your sql query like below:
$query = "SELECT TIME_FORMAT(hora,'%H:%i:%S') FROM consulta
WHERE professional=1
AND client=0";
$result = mysqli_query($con, $query);