PHP file not pulling in .txt files anymore - php

Question

I have a func.php file that grabs three .txt files from my server and inputs the data into a table in a MySQL database. I recently upgraded my PHP to 5.4 from 5.3 and this has caused an issue where it doesn't pull in the .txt files anymore but just deletes the table. In the update_training_db function, it runs empty_table but not move_file and load_csv. This code was working in 5.3 but I am not sure why it isn't grabbing the text files anymore. Can anyone help?
The whole PHP script consists of 4 functions as seen in the whole code. empty_table, move_file, load_csv, and update_training_db to execute everything.
The Problem:
function update_training_db($dbt){
empty_table($dbt, 'customers');
move_file('/training/TrainingCustomerList.txt');
load_csv($dbt, '/training/TrainingCustomerList.txt', 'customers');
}
Whole file:
<?php
header('Content-Type: application/json; charset=UTF-8');
$argv = $_SERVER['argv'];
$totalArgv = count($argv);
// Use PDO to connect to the DB
$dsn_training = 'mysql:dbname=training;host=127.0.0.1';
$user = 'training';
$password = 'training';
try {
$dbt = new PDO($dsn_training, $user, $password);
$dbt->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
//echo 'Connected to SQL Server';
}
function empty_table($dbconn, $tablename){
try{
$sql = "TRUNCATE TABLE " . $tablename;
$sth = $dbconn->prepare($sql);
//$sth->bindParam(':tablename', $tablename, PDO::PARAM_STR);
// The row is actually inserted here
$sth->execute();
//echo " [+]Table '" . $tablename . "' has been emptied.<br>";
$sth->closeCursor();
}
catch(PDOException $e) {
die_with_error($e->getMessage());
}
}
function move_file($filename){
$source ="/public_html/b3/" . $filename;
$dest = "/public_html/includes/sfupdate/" . $filename;
if(!copy($source, $dest)){
throw new Exception("Failed to copy file: " . $filename);
}
else{
//echo "Successfully moved $filename.<br>";
}
}
function move_files(){
try {
move_file('training/TrainingCustomerList.txt');
}
catch(Exception $e){
die_with_error($e->getMessage());
}
//sleep(1);
//Return JSON
$return["json"] = json_encode($return);
//echo json_encode($return);
}
function load_csv($dbconn, $filename, $tablename){
try{
$sql = "LOAD DATA LOCAL INFILE '/includes/sfupdate/" . $filename . "' INTO TABLE " . $tablename . " FIELDS TERMINATED BY '\\t' ENCLOSED BY '\"' ESCAPED BY '\\\' LINES TERMINATED BY '\\n'";
$sth = $dbconn->prepare($sql);
// The row is actually inserted here
$sth->execute();
//echo " [+]CSV File for '" . $tablename . "' Table Imported.<br>";
$sth->closeCursor();
}
catch(PDOException $e) {
die_with_error($e->getMessage());
}
}
function update_training_db($dbt){
empty_table($dbt, 'customers');
move_file('/training/TrainingCustomerList.txt');
load_csv($dbt, '/training/TrainingCustomerList.txt', 'customers');
}