Get full drive path for fopen() function in php - php

Question

I have a CSV file ( sample.csv ), put in my flashdisk ( drive L: ). I read those file to update my database. I try to run it on localhost, everything works fine.But if the script I uploaded to the internet server, the script is always error. The server can not recognize the disk drive where I put the file (disk drive L:). Here is my first script before :
if (isset($_POST['upload1'])) {
$allowed_ext = array('csv');
$file_name = $_FILES['file']['name'];
$file_ext = strtolower(end(explode('.', $file_name)));
$file_path = realpath($_FILES['file']['name']);
if(in_array($file_ext, $allowed_ext) === true){
$handle = fopen($file_path.'/'.$_FILES['file']['name'], "r" );
while (! feof($handle)) {
$import=fgets($handle);
}
fclose($handle);
}
}
Because those script is not going well, then I try to add a few lines to determine the location of faults, this is the complete script:
if (isset($_POST['upload1'])) {
$allowed_ext = array('csv');
$file_name = $_FILES['file']['name'];
$file_ext = strtolower(end(explode('.', $file_name)));
$file_path = realpath($_FILES['file']['name']);
if(in_array($file_ext, $allowed_ext) === true){
if (!#fopen($file_path.'/'.$_FILES['file']['name'], 'r')) {
echo $file_path.'/'.$_FILES['file']['name'];
var_dump($php_errormsg);
}else{
$handle = fopen($file_path.'/'.$_FILES['file']['name'], "r" );
while (! feof($handle)) {
$import=fgets($handle);
}
fclose($handle);
}
}
}
From the second script, I know that disk drives are not known because it gives the following message: /SAMPLE.CSV NULL
/SAMPLE.CSV is the output of echo $file_path.'/'.$_FILES['file']['name'];
NULL is the output off var_dump($php_errormsg);
My question is how the script for the program to read the csv file from the drive L: ( L:/SAMPLE.CSV )
Thank you for any advices.

Answer 1

Save the CSV to your server
if (in_array($file_ext, $allowed_ext) === true)
{
move_uploaded_file($_FILES['file']['tmp_name'], '/your/directory/yourfile.csv');
}
Then loop through the CSV as requested
if (($handle = fopen("/your/directory/yourfile.csv", "r")) !== FALSE)
{
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE)
{
$fieldOne = trim($data[0]);
$fieldTwo = trim($data[1]);
$fieldThree = trim($data[3]);
// do stuff
}
fclose($handle);
}
After you have done what you need to with you CSV rows then delete the file
unlink('/your/directory/yourfile.csv');