Issue with LONGBLOBs in MySQLi - php

Question

I'm trying to insert LONGBLOBs to my database. Unfortunately when I click insert nothing is being inserted in the db. When I change the column type to BLOB everything is fine but the blob size capacityis too small so I really need LONGBLOBs. Using blob I can add only a 64kb file. Using longblob I can insert a file which is much larger. What's why I need to use LONGBLOB. I'm using MySQLi and PHP. Could you help me out?
if($_POST && $_FILES['uploadFile']['size'] > 0) {
$name = $_FILES['uploadFile']['name'];
$_SESSION['fileType'] = $_FILES['uploadFile']['type'];
$data = $_FILES['uploadFile']['tmp_name'];
//$data = addslashes($data);
$ifImage = getimageSize($_FILES['uploadFile']['tmp_name']);
$getAuthorID = $_SESSION['userID'];
$_SESSION['ifImage'] = $ifImage;
echo '<pre>'.print_r($_SESSION['ifImage'], true).'</pre>';
$fp = fopen($data, 'rw');
$content = fread($fp, filesize($data));
$content = addslashes($content);
fclose($fp);
/* SELECT FILE ID BY IT'S NAME */
$selectIDname= "SELECT fileID FROM files WHERE fileName = '$name'";
$selectIDnameQuery = mysqli_query($connection, $selectIDname);
$row = mysqli_fetch_array($selectIDnameQuery);
$selectIDname = $row['fileID'];
echo '<pre>ID: '.print_r($selectIDname, true).'</pre>';
$_FILES['uploadFile']['fileID'] = $row['fileID'];
/* INCREMENT FILE ID */
$selectFileIDQuery = mysqli_query($connection, "SELECT fileID FROM filescontent ORDER BY fileID DESC LIMIT 1");
$fetchFileID = mysqli_fetch_assoc($selectFileIDQuery);
$incrementFileID = $fetchFileID['fileID'] + 1;
/* GET AND INCREMENT FILE VERSION */
$getVersionsObject = new File($_FILES['uploadFile']['fileID']);
$fetchVersions = $getVersionsObject->getVersions();
$fetchLastElement = end($fetchVersions);
$incrementVersion = $fetchLastElement + 1;
echo '<pre>Version: '.print_r($incrementVersion, true).'</pre>';
/* SELECT FILE NAME FROM DB */
$selectName = mysqli_query($connection, "SELECT fileName FROM files WHERE fileName='$name'");
$fetchName = mysqli_fetch_assoc($selectName);
$fetchName = $fetchName['fileName'];
if(!strcmp($name, $fetchName)){
echo 'The file exists <br>';
$insertIntoFilescontentObject = new File($_FILES['uploadFile']['fileID']);
$insertIntoFilescontent = $insertIntoFilescontentObject->uploadContentIntoFilescontentFileExist($selectIDname, $incrementVersion, $content, $getAuthorID);
}
else{
echo 'The file does not exist';
$insertIntoFilesObject = new File($_FILES['uploadFile']['fileID']);
$insertIntoFiles = $insertIntoFilesObject->uploadContentIntoFiles($incrementFileID, $name, $getAuthorID);
$insertIntoFilescontentObject = new File($_FILES['uploadFile']['fileID']);
$insertIntoFilescontent = $insertIntoFilescontentObject->uploadContentIntoFilescontentFileNotExist($incrementFileID, $incrementVersion, $content, $getAuthorID);
}
$mysqliErorr = mysqli_error($connection);
echo '<br>'.$mysqliErorr.'<br>';
//header("Location: listFiles.php");
}
else if($_POST && $_FILES['uploadFile']['size'] == 0) {
echo 'You have not chosen a file';
}
}