inserting data into 2 tables at once - php

Question

I am wondering how can I insert the values retrieved from a HTML form into 2 tables, loginDetails and memberDetails.
loginDetails (table_1 shown in the code)
loginID (PK) <-- auto increment
username
password
memberDetails (table_2 shown in the code)
memberID (PK) <-- auto increment
loginID (FK)
These are the codes I have so far, however the loginID in memberDetails table are always 0,:
PHP codes
$Query = "INSERT INTO $table_1 VALUES (NULL,
'".$formValue['username']."',
'".$formValue['password']."')";
if (mysqli_query($Link, $Query)) {
$lastID = mysql_insert_id();
$Query2 = "INSERT INTO $table_2 VALUES (NULL,
'".$lastID."')";
if (mysqli_query($Link, $Query2)) {
$message = "You've sucessfully created the account!";
echo json_encode(array('success'=>'true', 'action'=>'login','html'=>$message, 'console.log'=>$Query));
}
else {
$message = "Error occur in query2";
echo json_encode(array('action'=>'error','html'=>$message, 'console.log'=>$Query));
}
}
else {
$message = "Error in query1";
echo json_encode(array('action'=>'error','html'=>$message, 'console.log'=>$Query));
}
It would be great if this question can be solved, as i have been struggling in this for 3 nights already. Cheers.

Answer 1

You can place your queries in an array. Loop through the array. If an error occurs, exit the script.
$myQueries = array(`"INSERT INTO $table_1 VALUES (NULL,
'".$formValue['username'].",
'".$formValue['password']."')",
"INSERT INTO $table_2 VALUES (NULL,
'".$lastID."')"
)`;
for($i = 0; $i < count($myQueries); $i++){
if (mysqli_query($Link, $myQueries[$i])) {
$lastID = mysql_insert_id();
$message = "You've sucessfully created the account!";
echo json_encode(array('success'=>'true',
'action'=>'login',
'html'=>$message,
'console.log'=>$Query));
}
else {
$message = "Error occur in query[$i]";
echo json_encode(array('action'=>'error',
'html'=>$message,
'console.log'=>$Query));
exit; // stops the next query
}
}
}