Situation: I've a toggle\_btn (switches Start / Stop --> value of the btn changes). When the page loads the value of the button is Start. When I hit the btn, the btn will toggle to Stop. The problem is that my php code runs when i hit the button for the first time (when i hit start), but I want the php code to be executed on the second click, when i click on Stop.

Is it possible to run the php code on second click on a btn?

**HTML CODE**:

```
<div id="row3">
    <form action="./includes/insert_data.php" method="POST" onsubmit="return check();">
        <div id="zone_area">
            <p><input type="text" name="zone_field" id="zone_field" placeholder="Enter a zone" autocomplete="off"></p>
        </div>
        <div id="button_area">
            <p><input type="submit" value="Start" id="toggle_btn" name="toggle_btn"></p>
        </div>
    </form>
</div>

```

JavaScript CODE

```
function check(){
    var zone_field = document.getElementById("zone_field");

    if(zone_field.value == ''){
        alert("Try again");
        return false;
    } else {
        second_check();
    }
}

function second_check(){
    var toggle_btn = document.getElementById("toggle_btn");

    if(counter == 0){

        //zone_field.disabled = true;
        toggle_btn.style.backgroundColor = "red";
        toggle_btn.style.border = "1px solid black";
        toggle_btn.value = "Stop";
        toggle_btn.style.transition = "all 0.2s ease";

        counter = 1;
    } else {
        var zone_table = document.getElementById("zone_table");
        var avg_div = document.getElementById("row5");

        //zone_field.disabled = false;
        toggle_btn.style.backgroundColor = "green";
        toggle_btn.value = "Start";
        toggle_btn.style.transition = "all 0.2s ease";

        $(avg_div).slideDown(300);
        zone_table.innerHTML = zone_field.value;

        zone_field.value = '';

        counter = 0;
    } 
}

```

**PHP CODE**:

```
<?php

include_once("./conn.php");

if(isset($_POST["toggle_btn"])){
    if(!empty($_POST["zone_field"])){

        $sql = "SELECT SUM(waarde) AS total_sum, COUNT(waarde) AS total_count FROM results";
        $res = $conn->query($sql);

        $Name = $_POST["zone_field"];
        $Time = 10;

        if ($res->num_rows > 0) {
            while($row = $res->fetch_assoc()) {

                $avg = $row["total_sum"] / $row["total_count"];

                $sql = "INSERT INTO measurements (Name, Time, AVG_ms) VALUES(?, ?, ?);";

                if($stmt = mysqli_prepare($conn, $sql)){
                    // Bind variables to the prepared statement as parameters
                    mysqli_stmt_bind_param($stmt, "sss", $Name, $Time, $avg);
                    mysqli_stmt_execute($stmt);

                    header("Location: ../results.php");
                } else{
                    echo "ERROR: Could not prepare query: $sql. " . mysqli_error($conn);
                }
            } 
        } else {
            echo "No rows have been found";
        }
        $conn->close();
    }
} else {
    echo 'Did not hit the btn';
}
?>

```