Still having duplicate vaues in mysql table - php

Question

I already took advises on the web regarding to prevent duplicate values from saving to the mysql table but it still saves it and I already placed echo statements and exit to ensure this doesn't happen but it still has. Here is the code that I used and edited to my preferences:
$line = array();
$file = fopen("D:/Documents/Documents/LOGS.txt", "r");
while (! feof($file))
{
$line[] = fgetcsv($file, 4096);
foreach ($line as $value)
{
$newline = explode(" ", $value[1]);
$date = trim($newline[0]);
$time = trim($newline[1]);
$check = mysqli_query($cxn, "select * from temprec where EmpID = '$value[0]'
and ValidDate = '$date' and ValidTime = '$time'") or die("Couldn't execute
query");
$checkrows = mysqli_num_rows($check);
if ($checkrows > 0) {
echo "data already saved";
exit;
}
else
{
$result = mysqli_query($cxn, "insert ignore into
temprec(EmpID,ValidDate,ValidTime) values('$value[0]','$date','$time')") or
die("Couldn't execute query");
}
}
}
fclose($file);
Note: the logs.txt contains data from a biometrics machine and it contains too much duplicate values.

Answer 1

You have a mistake in the check query. In string
"select * from temprec where EmpID = '$value[0]' and ValidDate = '$date' and ValidTime = '$time'" variable $value[0] parces as just $value and you get query like this "select * from temprec where EmpID = 'array[0]' and ValidDate = '$date' and ValidTime = '$time'".
Using '{}' should fix it: "select * from temprec where EmpID = '${value[0]}' and ValidDate = '$date' and ValidTime = '$time'".

Answer 2

have you tried echoing your "insert ignore into temprec(EmpID,ValidDate,ValidTime) values('$value[0]','$date','$time')") or
die("Couldn't execute query" for you to be sure if your query shows the right query?