send binary files from php to mysql using mysqli - php

Question

i want to send data into two tables from a php script,the pic and idcard are two binary files that in mysql db and both of them have LONGBLOB type always the first insert query executed successfully(insert into user table) but the second query(insert into `applicant' table) have two situations:
1-if i make the pic and idcard field NULLABLE in db,other data except these two inserted successfully.
2-if i make the pic and idcard field NOT NULLABLE nothing insert into `applicant' table.
and both of two situation i cant save the binary data into my database,where is the problem?
and i also have no problem in $_FILES array and passing them,i can see the details of these fileds when i post it to the php script.
i think something is wrong with the send_long_data but i use it before exactly like now!
here is the script:
require_once('db_connection_config.php');
if (mysqli_connect_errno()) {
print_r("<div class='bs-example center-block'><div id='alertshow' class='bs-example center-block alert alert-danger'><a href='#' class='close' data-dismiss='alert'>×</a><strong>Connection Error:</strong>" . mysqli_connect_errno() . "</div></div>");
exit();
}
$today = date('Y:m:d');
$pass = randomPassword();
$stmt = $mysqli->prepare("INSERT INTO user (password,gender,firstname,lastname,email,phoneNum,mobileNum,Address,UserRoles_userRoleId) VALUES (?,?,?,?,?,?,?,?,3)");
$stmt->bind_param("sissssss", $pass, $_POST['gender'], $_POST['name'], $_POST['lastname'], $_POST['email'], $_POST['phonenum'], $_POST['mobilenum'], $_POST['address']);
$stmt->execute();
$mkey = mysqli_insert_id($mysqli);
$stmt->close();
if(isset($_FILES['pic']) && isset($_FILES['idcard'])){
$pic_file_path = $_FILES['pic']['tmp_name'];
if ( !file_exists($pic_file_path) ) {
throw new Exception('File not found.');
}
$pic_handle = fopen($pic_file_path, "rb");
if ( !$pic_handle ) {
throw new Exception('File open failed.');
}
$pic_content = null;
$idpic_file_path = $_FILES['idcard']['tmp_name'];
$idpic_handle = fopen($idpic_file_path, "rb");
$idpic_content = null;
$stmt = $mysqli->prepare("INSERT INTO applicant (userId,nationalCode,fatherName,birthPlace,nationality,religion,postalCode,picture,idpicture,registrationDate,militaryServiceStatus) VALUES (?,?,?,?,?,?,?,?,?,?,?)");
$stmt->bind_param("isssiisbbss", $mkey, $_POST['nationalcode'], $_POST['fathername'], $_POST['birthcity'], $_POST['nationality'], $_POST['religion'], $_POST['postalcode'], $pic_content, $idpic_content, $today, $_POST['mss']);
while (!feof($pic_handle)) {
$stmt->send_long_data(1, fread($pic_handle, 8192));
}
fclose($pic_handle);
while (!feof($idpic_handle)) {
$stmt->send_long_data(1, fread($idpic_handle, 8192));
}
fclose($idpic_handle);
$stmt->execute();
$stmt->close();
}
}
function randomPassword() {
$alphabet = "abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ0123456789";
$pass = array(); //remember to declare $pass as an array
$alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
for ($i = 0; $i < 8; $i++) {
$n = rand(0, $alphaLength);
$pass[] = $alphabet[$n];
}
return implode($pass); //turn the array into a string
}