How to insert multiple file upload into mysql - php

Question

I have coded this far but the only issue i have is that i can't save multiple rows for the same user id when the user uploads several pictures. the code works perfectly fine, I mean the multiple files gets inserted into the file system folder/root directory but the reference in the database doesn't quit work. It only inserts the first file uploaded image not the the second file upload.
Here is my code:
<?php
if(isset($_POST['go'])) {
if(isset($_FILES['file_array'])){
$errors= array();
foreach($_FILES['file_array']['tmp_name'] as $key => $tmp_name ) {
$user = $_SESSION['user_id'];
$file_name = $key.$_FILES['file_array']['name'][$key];
$file_size =$_FILES['file_array']['size'][$key];
$file_tmp =$_FILES['file_array']['tmp_name'][$key];
$file_type=$_FILES['file_array']['type'][$key];
}
$extensions = array("jpeg","jpg","png");
$file_ext=explode('.',$_FILES['file_array']['name'][$key]);
$file_ext=end($file_ext);
$file_ext=strtolower(end(explode('.',$_FILES['file_array']['name'][$key])));
if(in_array($file_ext,$extensions ) === false) {
$errors[]="extension not allowed";
}
if($_FILES['file_array']['size'][$key] > 2097152) {
$errors[]='File size must be less tham 2 MB';
}
$query = array();
$myarray = '';
if(is_array($query)) {
foreach ($query as $row) {
$query[] = '('.$row['ID'].',"'.$row['FILE_NAME'].'", "'.$row['FILE_TYPE'].'", "'.$row['FILE_SIZE'].'")';
}
}
$dir = "users_data/profile/users_posted_data/";
if(empty($errors)==true) {
if(is_dir($dir)==false){
mkdir("$dir/", 0700);
}
if(is_dir("$dir/".$file_name)==false) {
move_uploaded_file($file_tmp,"$dir/".$file_name);
} else {
$new_dir="$dir/".$file_name.time();
rename($file_tmp, "$dir/".$file_name);
}
$query_run = mysqli_query($mysqli, 'INSERT INTO table (ID, FILE_NAME,FILE_SIZE, FILE_TYPE) VALUES '.implode(',', $query));
} else {
print_r($errors);
}
if(empty($error)) {
echo "Success";
}
}
}
?>

Answer 1

You are trying to iterate over an empty array. Not sure what you were actually trying to do but this will do nothing.
$query = array(); // init array
$myarray = '';
if(is_array($query)) { // test that its an array which it obviously is see 2 lines previous
foreach ($query as $row) { // iterate over empty array
// add to the array we are **not** iterating over
$query[] = '('.$row['ID'].',"'.$row['FILE_NAME'].'", "'.$row['FILE_TYPE'].'", "'.$row['FILE_SIZE'].'")';
}
}