Query conditions to insert data from a form - php

Question

What I'm trying to do is:
If the age input in my form = 28, 30, 25 or 21 then I want to auto insert value 8 in the column (VE), else keep it empty. Is this the right way to do that?
if($form_data->action == 'Insert')
{
$age=array(28, 30, 25, 21);
$age_str=implode("','", $age);
if($form_data->age == $age_str){
$query="INSERT INTO tbl
(VE) VALUE ('8') WHERE id= '".$form_data->id."'
";
$statement = $connect->prepare($query);
$statement->execute();
}
$data = array(
':date' => $date,
':first_name' => $first_name,
':last_name' => $last_name,
':age' => $age
);
$query = "
INSERT INTO tbl
(date, first_name, last_name, age) VALUES
(:date, :first_name, :last_name, :age)
";
$statement = $connect->prepare($query);
if($statement->execute($data))
{
$message = 'Data Inserted';
}
}
Also, how do I insert the new row with the row id from the other form data going into tbl?

Answer 1

Use php's in_array instead of trying to compare a string. To get the id of the query where you insert the form data, you can return the id of the insert row from your prepared statement.
if ($form_data->action == 'Insert') {
// assuming $age, $date, $first_name, $last_name
// already declared prior to this block
$data = array(
':date' => $date,
':first_name' => $first_name,
':last_name' => $last_name,
':age' => $age
);
$query = "
INSERT INTO tbl
(date, first_name, last_name, age) VALUES
(:date, :first_name, :last_name, :age)
";
$statement = $connect->prepare($query);
if ($statement->execute($data)) {
$message = 'Data Inserted';
// $id is the last inserted id for (tbl)
$id = $connect->lastInsertID();
// NOW you can insert your child row in the other table
$ages_to_insert = array(28, 30, 25, 21);
// in_array uses your array...so you don't need
// if($form_data->age == $age_str){
if (in_array($form_data->age, $ages_to_insert)) {
$query="UPDATE tbl SER VE = '8' WHERE id= '".$id."'";
$statement2 = $connect->prepare($query);
$statement2->execute();
}
}
}