File path with '/' is not inserting in DB - php

Question

I need to check duplicate files from a path and need to insert the file name in a table if it is new and then insert all records of it accordingly into another table. Do not insert or step forward if file already exists.
Here is my code where i can't bring the file path with '/' into the DB. Can anyone assist? Thanks in advance.
File Path with '/' is not passing using $open = fopen('$cont[$x]','r');
<?php
//include ("connection.php");
$conn = new mysqli('localhost','root','','demo');
$path = _DIR_ . DIRECTORY_SEPARATOR ."*.{txt}";
$cont = glob($path, GLOB_BRACE);
//print_r($content);
$arrlength = count($cont);
for($x = 0; $x < $arrlength; $x++){
// $sql = "INSERT INTO `file_record` (`file_name`) VALUES ('$cont[$x]') ";
$dup = mysqli_query($conn,"SELECT * FROM file_record WHERE file_name = '$cont[$x]' ");
if(mysqli_num_rows($dup)>0)
{
echo "File already Exists";
}
else {
$insert = "INSERT INTO `file_record` (`file_name`) VALUES ('$cont[$x]') ";
// $conn->query($insert);
if (mysqli_query($conn,$insert)) {
$open = fopen('$cont[$x]','r');
while (!feof($open))
{
$content = fgets($open);
$carry = explode(",",$content);
list($name,$city,$postcode,$job_title) = $carry;
$sql = "INSERT INTO `employee` (`name`, `city`, `postcode`, `job_title`) VALUES ('$name','$city','$postcode','$job_title')";
$conn->query($sql);
}
fclose($open);
echo 'inserted';
} else {
echo 'Not inserted';
}
}
}
?>