I'm trying to upload my txt file into my database but I don't think anything happens. I checked my database in phpmyadmin but nothing was inserted. How do I load and insert my data into mysql database? 

Here's my code: 

```
<?php 
$conn = mysql_connect("localhost", "login", "password") or die(mysql_error()); 

mysql_select_db("database", $conn);

if(!isset($_POST['submit']))
{
    $uploadtxt = "nyccrash.txt";

    $handle= fopen($uploadtxt, "r");

    // error checking.
    if($handle === false) {
   die("Error opening $uploadtxt");
}

    while($fileop = fgetcsv($handle, 1000, ",") !== false) { 

    $crash_year = $fileop[0];
    $accident_type = $fileop[1];
    $collision_type = $fileop[2];
    $weather_condition = $fileop[3];
    $light_condition = $fileop[4];
    $x_coordinate = $fileop[5];
    $y_coordinate = $fileop[6];

    $sql = mysql_query("INSERT INTO nyccrash (crash_year, accident_type, collision_type, weather_condition, light_condition, x_coordinate, y_coordinate) VALUES ($crash_year, $accident_type, $collision_type, $weather_condition, $light_condition, $x_coordinate, $y_coordinate)"); 

    } } 

```

?> 

```
<!DOCTYPE html> 
<html>
<head> 
<meta charset="utf-8">
<title> NYC Crash Data </title> 
<link ref="stylesheet" type "text/css" href="../style/style.css" /> 

</head> 
<body> 
<div id="mainWrapper"> 

    <form method="post" action="" enctype="multipart/form-data"> 
        <input type="file" name="file"/>
        <br/> 
        <input type="submit" name="submit" value="submit"/> 
    </form> 

</div> 

```