Insert and Update on one click - php

Question

I have two table Billing_month and registration in mysql. i want to insert into Billing_month and at the same time i want to update a row (Arrears) in registration table. how can i do this.
PHP Code is:
<?php
//create connection
include("database/db.php");
// Check connection
if($link === false){
die("ERROR: Could not connect. " . mysqli_connect_error());
}
// Insert Data
#$month=$_POST['Bill_month'];
#$issuedate=$_POST['Bill_issue_date'];
#$duedate=$_POST['Bill_due_date'];
#$surcharge =$_POST['Surcharge'];
$sql = "INSERT INTO billing_month (Bill_month,Bill_issue_date,Bill_due_date,Surcharge) values('$month','$issuedate','$duedate','$surcharge')";
if(mysqli_query($link, $sql)){
echo "Records added successfully.";
} else{
echo "ERROR: Could not able to execute $sql. " . mysqli_error($link);
}
// close connection
mysqli_close($link);
?>
Need your help?

Answer 1

I would only run the query update if the insert was successful.
<?php
//create connection
include("database/db.php");
// Check connection
if($link === false){
die("ERROR: Could not connect. " . mysqli_connect_error());
}
// Insert Data
#$month=$_POST['Bill_month'];
#$issuedate=$_POST['Bill_issue_date'];
#$duedate=$_POST['Bill_due_date'];
#$surcharge =$_POST['Surcharge'];
$sql = "INSERT INTO billing_month (Bill_month,Bill_issue_date,Bill_due_date,Surcharge)
values('$month','$issuedate','$duedate','$surcharge')";
if(mysqli_query($link, $sql)){
$res = "Records added successfully.";
// Update Registration Arrears query
$sql_upadte = "Update registration ...."
if(mysqli_query($link, $sql_update)){
$res .= "<br>Registration record updated successfully.";
}else{
$res .= "<br>ERROR: Could not able to execute.<br>".$sql_update."<br>".mysqli_error($link);
}
echo($res);
} else{
echo "ERROR: Could not able to execute $sql. " . mysqli_error($link);
}
// close connection
mysqli_close($link);
?>

Answer 2

Use two queries to insert and to update, then execute them
$sql = "INSERT INTO billing_month (Bill_month,Bill_issue_date,Bill_due_date,Surcharge)
values('$month','$issuedate','$duedate','$surcharge')";
$sqlUpdate = "Place your update query here";
$insert = mysqli_query($sql);
$update = mysqli_query($sqlUpdate);

Answer 3

After insert into your billing table get last inserted id
$id = mysql_insert_id();
Then update your registration table.
$query = "UPDATE registration SET .... WHERE billing_id = $id; ";
mysql_query($query);

Answer 4

This is a simple multi query, you can look at php - multi_query here.
<?php
$query = "INSERT INTO billing (...) VALUES (....) ; ";
$query .= "UPDATE billing SET .... ; ";
if(!mysqli_multi_query($link,$query)){
...
}
Otherwise you can still do just do two single queries and execute them one after the other