Execute Query on Button Click If checkbox is Checked

HTML File
<!DOCTYPE html>
<html lang="en">
    <head>
    <meta charset="utf-8">
    <title>Test query</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

						<script language="JavaScript">
						function toggle(source) {
						  checkboxes = document.querySelectorAll("input[name^='box[']");
						  for(var i=0, n=checkboxes.length;i<n;i++) {
						    checkboxes[i].checked = source.checked;
						  }
						}
						</script>
  </head>
  <body>
<table style="width: 100%; font-size: 11;">
				<tr>

					<th>ve067</th>

					<th>ve378</th>

					<th>ve724</th>

					<th>ve725</th>

					<th>ve726</th>

					<th>ve727</th>

				</tr>

				<tr>

					<td>
						<form method="post" action="update.php">
							<input type="submit" name="update" value="Update - LoL / BoL"><br />
							<input type="checkbox" onClick="toggle(this)" name="All" value="All">&nbsp;Select all <br />
							<input type="checkbox" name="box[1]" value="ve067_LB1">&nbsp;LeagueBot 1<br>
							<input type="checkbox" name="box[2]" value="ve067_LB2">&nbsp;LeagueBot 2<br>
							<input type="checkbox" name="box[3]" value="ve067_LB3">&nbsp;LeagueBot 3<br>
							<input type="checkbox" name="box[4]" value="ve067_LB4">&nbsp;LeagueBot 4<br>
						</form>
					</td>
				</tr>
	</table>
  </body>
</html>

Update.php file
<?php
	if(isset($_POST['update'])) {
		if(isset($_POST['box'][1])) {
			echo('run your query here for box1 here');
		} else if(isset($_POST['box'][2])){
			echo('run your query here for box2 here');
		} else if(isset($_POST['box'][3])){
			echo('run your query here for box3 here');
		} else if(isset($_POST['box'][4])){
			echo('run your query here for box4 here');
		} else {
			header("location:test-query.php");
		}
	} else {
		header("location:test-query.php");
	}