无法使用jQuery调用php函数：ajax

Question

I am new to php and trying to implement a small webpage part of a school project. reportBuffering method in video.js file should call bufferingEventLogger method in server.php using Jquery ajax and store the passed values in Database. I am not able to trigger the bufferingEventLogger function. Here's the code for video.js

var video;
$(document).ready(function(){
var timeBuffered = 0;
var timer;
    video = $('#main-video')[0];
    video.play();
    $(video).on("play",function(){
    if(timer!=null)
        clearInterval(incrementBufferedTime);
    });
    $(video).on("waiting",function(){
    timer = setInterval(function(){
        incrementBufferedTime
    },1000);
    });
function incrementBufferedTime(){
    timeBuffered++;
    console.log("Buffered time"+timeBuffered);
    if(timeBuffered > 5){
        reportBuffering()
    }
}
function reportBuffering(){
    $.ajax({
      method: "POST",
      url: "server.php",
      data:{functionId:'bufferingEventLogger',val0:1,val1:'2016-04-18 16:37:01',val2:'2016-04-18 16:37:02'},
      success:function  (response) {
        console.log(response)
      }
    });
}
reportBuffering();

});

Below code is for server.php

$id=$_POST['val0'];
$bufferStartTime=$_POST['val1'];
$bufferEndTime=$_POST['val2'];

//bufferingEventLogger($id,$bufferStartTime,$bufferEndTime);

function bufferingEventLogger($id,$bufferStartTime,$bufferEndTime){
$conn = mysqli_connect("localhost", "root", "", "metrics");
$sql = "INSERT INTO buffer_time(id,buffer_start,buffer_end) VALUES   $id,'$bufferStartTime','$bufferEndTime')";
echo 'entered';

if (mysqli_query($conn, $sql)) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}

}


mysqli_close($link);

I have gone through similar questions, but couldn't get it to work. Thanks

Answer 1

The only line that calls bufferingEventLogger is commented out.

Do you want to only call this function? If so, just uncomment the line.

If you want to add more functions, you might need to use something like a switch statement.