Update value if the checkbox if checked multiple rows php - php

Question

I am trying to update each row with a value of 1 if the checkbox is checked and do nothing if not.
$query= "SELECT Name, Surname, Age, Club, age_group, School, team_select FROM players WHERE Age < 9";
$statement = $db->prepare($query);
$statement->execute();
$players = $statement->fetchAll(PDO::FETCH_ASSOC);
echo '<form nethod="POST" action="add_to_team.php">';
echo '<p align="center"><a href="new.php" >Add Player</a></p>';
echo '<table class="table table-bordered"';
echo '<tr><th>Name</th>
<th>Surname</th>
<th>Club</th>
<th>Age Group</th>
<th>School</th>
<th>Edit</th>
<th>Delete</th>
<th>Add to Team</th></tr>';
// loop through results of database query, displaying them in the table
foreach ($players as $player) {
// echo out the contents of each row into a table
echo '<tr>';
echo '<td>' . $player['Name'] . '</td>';
echo '<td>' . $player['Surname'] . '</td>';
echo '<td>' . $player['Club'] . '</td>';
echo '<td>' . $player['age_group'] . '</td>';
echo '<td>' . $player['School'] . '</td>';
echo '<td>Edit</td>';
echo '<td>Delete</td>';
echo '<td><input type="checkbox" name="team_select" value="1"> </td>';
echo '</tr>';
}
echo '</table>';
echo'<input type="submit" value="Submit" name="submit"><br/>';
Code (It just won't work)
<?php
include 'connect.php';//database connection
isset($_POST['team_select'])
?>

Answer 1

You need to give the checkboxes different names. If they're all named team_select there will just be one $_POST['team_select'], but you won't be able to tell which checkboxes were checked.
Use name="team_select[]" and they'll all be put into an array. Then you can put the player name into the value, so the array will contain the names of all the players who should be added.
echo '<td><input type="checkbox" name="team_select[]" value="' . $player['Name'] . '"> </td>';
When you're processing the form, you can do:
foreach ($_POST['team_select'] as $name) {
...
}
to process all the players who were selected.