PHP highlight selected item - php

Question

Just like the image above, when the user clicks one of the list on the right side, it highlights the selected one.
$result = mysqli_query($con, "SELECT * FROM contacts") or die(mysqli_error($con));
while($row = mysqli_fetch_array($result)){
$company = $row['eyo_company_name'];
$id = $row['con_id'];
$editLinks .= "\n\t$company<br>";
}
this is how I brought the list out from the database. Would there be any way I could add a class or add b tag on selected one only ?

Answer 1

If I understand correctly, you are trying to highlight one of the links output by PHP. To do so you will need to know which one to highlight.
If you have a GET variable set to the current contact ID, you could do something like this:
while($row = mysqli_fetch_array($result)){
$company = $row['eyo_company_name'];
$id = $row['con_id'];
//let's check if we've pre-selected a company
// and if so, is this the company we selected?
if (true === array_key_exists('CURRENT_COMPANY_ID', $_GET) && $id === $_GET['CURRENT_COMPANY_ID']) {
//we did select this company for this PHP request
// let's make the HTML output custom to highlight the selected company
$editLinks .= "\n\t<strong>$company</strong><br>";
} else {
$editLinks .= "\n\t$company<br>";
}
}
This example expects that your request to the PHP script generating your list of links will include CURRENT_COMPANY_ID=<ID HERE> in the URL.
For example, if the URL for the request that generates your list of links looks like this:
/getMySuperAwesomeList.php
It would need to look like this:
/getMySuperAwesomeList.php?CURRENT_COMPANY_ID=123
Where 123 matches the con_id of the record you want to highlight.
I chose to use array_key_exists() to make sure that the request actually included the CURRENT_COMPANY_ID data in the URL. Here is documentation for that function: https://www.php.net/array_key_exists