Creating a CSV Upload to Mysql - php

Question

I have a table in MYSQL where I wish to have the option that my customer can upload a CSV file. By default I want this to add information which isn't there and automatically update it if there is information there.
These are the columns I have:
id customer_name customer_name_letterhead customer_notes systype status signaltype verification address postcode telephone mobile mobiletwo email mainarea installation Contract expiration SPA nservice maintenance monitoring MS certdate
I already know that I need to have an excel document with all of these in the headers of the rows. E.g A1-V1 has those headers.
edit:
I have made this:
<?PHP if(isset($_POST['SUBMIT']))
{
$fname = $_FILES['sel_file']['name'];
$chk_ext = explode(".",$fname);
if(strtolower($chk_ext[1]) == "csv")
{
$filename = $_FILES['sel_file']['tmp_name'];
$handle = fopen($filename, "r");
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE)
{
$sql = "INSERT into Customers(id,customer_name,customer_name_letterhead,customer_notes,systype,status,signaltype,verification,address,postcode,telephone,mobile,mobiletwo,email,mainarea installation,Contract,expiration,SPA,nservice,maintenance,monitoring,MS,certdate) values('$data[0]','$data[1]','$data[2]''$data[3]','$data[4]','$data[5]','$data[6]','$data[7]','$data[8]','$data[9]','$data[10]','$data[11]','$data[12]','$data[13]','$data[14]','$data[15]','$data[16]','$data[17]','$data[18]','$data[19]','$data[20]','$data[21]','$data[22]','$data[23]','$data[24]')";
mysql_query($sql) or die(mysql_error());
}
fclose($handle);
echo "Successfully Imported";
}
else
{
echo "Invalid File";
}
}?>
<form action='<?php echo $_SERVER["PHP_SELF"];?>' method='post'>
Import File : <input type="file" name="sel_file" id="sel_file">
<input type='submit' name='submit' value='submit'>
</form>
Upon clicking submit, nothing happens.
Here is a picture of my csv file:

Answer 1

I ended up searching for a video on YouTube which really did help. It ended up giving me this:
<?PHP
if(isset($_POST['submit']))
{
$file = $_FILES['file']['tmp_name'];
$handle = fopen($file,"r");
while(($fileop = fgetcsv($handle,1000, ",")) !== false)
{
$customer_name = $fileop[0];
$customer_name_letterhead = $fileop[1];
$customer_notes = $fileop[2];
$systype = $fileop[3];
$status = $fileop[4];
$signaltype = $fileop[5];
$verification = $fileop[6];
$address = $fileop[7];
$postcode = $fileop[8];
$telephone = $fileop[9];
$mobile = $fileop[10];
$mobiletwo = $fileop[11];
$email = $fileop[12];
$mainarea = $fileop[13];
$installation = $fileop[14];
$Contract = $fileop[15];
$expiration = $fileop[16];
$SPA = $fileop[17];
$nservice = $fileop[18];
$maintenance = $fileop[19];
$monitoring = $fileop[20];
$MS = $fileop[21];
$certdate = $fileop[22];
$sql = mysqli_query($GLOBALS["___mysqli_ston"], "INSERT INTO Customers (
customer_name,
customer_name_letterhead,
customer_notes,
systype,
status,
signaltype,
verification,
address,
postcode,
telephone,
mobile,
mobiletwo,
email,
mainarea,
installation,
Contract,
expiration,
SPA,
nservice,
maintenance,
monitoring,
MS,
certdate
) VALUES (
'$customer_name',
'$customer_name_letterhead',
'$customer_notes',
'$systype',
'$status',
'$signaltype',
'$verification',
'$address',
'$postcode',
'$telephone',
'$mobile',
'$mobiletwo',
'$email',
'$mainarea',
'$installation',
'$Contract',
'$expiration',
'$SPA',
'$nservice',
'$maintenance',
'$monitoring',
'$MS',
'$certdate'
)");
if($sql)
{
echo 'Uploaded '. $sql . ' entries';
}
}
}
?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data">
<input type="file" name="file">
<br>
<input type="submit" name="submit" value="Upload CSV File">
</form>

Answer 2

not used it myself but have you tried this,
http://php.net/manual/en/function.str-getcsv.php
you could also try breaking the csv up into lines using explode on \n and then splitting it up further based on the ,.
once you have all the chunks push it into the database.