I'm trying to store the values in the HTML page into the database I have created, the databse has 6 columns for each slider. The columns are: value1, value2, value3, value4, value5, and value6. Also, I want to connect the database with PHP. The buttons in the HTML page does nothing, and I couldn't figure out how to make them functional.
HTML
<!DOCTYPE html>
   <html>
  <head>
  <style>
        h1 {text-align: center;}
    </style>
    
        <title>Multiple sliders</title>
        
        <link rel="stylesheet" href="./style.css">
  </head>
  <body>
        
        <!-- Heading -->
        <h1>  Multiple sliders </h1>
        
        <form action = "details_entry.php" method="POST">
        
    
  <div class="slidecontainer">
    <input type="range" min="0" max="360" value="180" class="slider" id="myRange">
    <p>Value: <span id="demo"></span></p> <label> Slider 1</label>
  </div>
  <div class="slidecontainer">
    <input type="range" min="0" max="360" value="180" class="slider" id="myRange2">
     <p>Value: <span id="demo2"></span></p> <label> Slider 2</label>
  </div>
  <div class="slidecontainer">
    <input type="range" min="0" max="360" value="180" class="slider" id="myRange3">
  <p>Value: <span id="demo3"></span></p>  <label> Slider 3</label> 
  </div>
  <div class="slidecontainer">
    <input type="range" min="0" max="360" value="180" class="slider" id="myRange4">
    <p>Value: <span id="demo4"></span></p> <label> Slider 4</label>
  </div>
  <div class="slidecontainer">
    <input type="range" min="0" max="360" value="180" class="slider" id="myRange5">
    <p>Value: <span id="demo5"></span></p> <label>Slider 5</label>
  </div>
  <div class="slidecontainer">
    <input type="range" min="0" max="360" value="180" class="slider" id="myRange6">
    <p>Value: <span id="demo6"></span></p> <label> Slider 6</label>
  </div>
  <div class="wrapper">
      <button class="button" >Save</button>
  </div>
  <div class="button10" > 
   <button class="button1" >On/Off</button>
  </div>
  <script>
  var slider1 = document.getElementById("myRange");
  var demo = document.getElementById("demo");
  demo.innerHTML = slider1.value;
  slider1.oninput = function() {
    demo.innerHTML = this.value;
  }
  </script>
  <script>
  var slider2 = document.getElementById("myRange2");
  var output = document.getElementById("demo2");
  output.innerHTML = slider2.value;
  slider2.oninput = function() {
    output.innerHTML = this.value;
  }
  </script>
  <script>
  var slider3 = document.getElementById("myRange3");
  var output3 = document.getElementById("demo3");
  output3.innerHTML = slider3.value;
  
  slider3.oninput = function() {
    output3.innerHTML = this.value;
  }
  </script>
  <script>
  var slider4 = document.getElementById("myRange4");
  var demo4 = document.getElementById("demo4");
  demo4.innerHTML = slider4.value;
  slider4.oninput = function() {
    demo4.innerHTML = this.value;
  }
  </script>
  <script>
  var slider5 = document.getElementById("myRange5");
  var output5 = document.getElementById("demo5");
  output5.innerHTML = slider5.value;
  slider5.oninput = function() {
    output5.innerHTML = this.value;
  }
  </script>
  <script>
  var slider6 = document.getElementById("myRange6");
  var output6 = document.getElementById("demo6");
  output6.innerHTML = slider6.value;
  slider6.oninput = function() {
    output6.innerHTML = this.value;
  }
  </script>
  </body>
  </html>
CSS
   * {
     margin: 0;
     padding: 0;
   }
   body {
     height: 100vh;
     background-color: #000;
     font-family: "Roboto", sans-serif;
     background: linear-gradient(180deg, #db302a 0%, #62186b 100%) no-repeat;
   }
   .slidecontainer {
     display: flex;
     flex-direction: column;
     align-items: center;
     justify-content: center;
   }
   .slider {
     margin-top: 4vh;
     /*moves the slider up or below */
   }
   label{
       text-align: right;
       text-indent: 250px;
       text-align-last: right;
       line-height: -200px;
       margin-top: -17px;
       margin-left: -10px;
       font-size: 20px;
   }
   .wrapper {
       text-align: center;
   }
   .button {
       position: absolute;
       top: 60%;
       left:52%;
       font-size: 20px;
   }
   .button10 {
       text-align: center;
   }
   .button1 {
       position: absolute;
       top: 60%;
       left:47%;
       font-size: 20px;
   }
PHP
   <?php
   $username='root';
   $password= '';
   $conn = new mysqli('localhost','root','','robot_arm_values');
   if($conn->connect_error){
       die('connection Failed:'.$conn->connection_error);
   }
       else{
        $stmt = $conn->prepare("insert into robot_arm_values(value1,value2,value3,value4,value5,value6)                       values(?,?,?,?,?,?)");
    $stmt->bind_param("iiiiii",$value1,$value2,$value3,$value4,$value5,$value6);
    $stmt->execute();
    echo "Values have been modified successfully!";
    $stmt->close();
    $conn->close();
}
   ?>
 
    