Dynamic insert into DB - php

Question

i'm creating a simple web app which a form to insert data in DB ( Postgres).
I have this tables:
prenotazione (id,nome_rich,cogn_rich,email_rich,oggetto_rich)
interni (id,nome_int,cogn_int,email_int)
esterni (id,nome_est,cogn_est,email_est)
Now about the tables "interni" and "esterni" the users should choose how many data want to insert, so i have implemented a dynamic form:
**index.php
<div id="start">
<div id="first">
Nome:<input type="text" name="iname[]" size="20"><br>
Cognome: <input type="text" name="isurname[]" size="20"><br>
Email: <input type="email" name="iemail[]" size="20"><br>
<br>
</div>
</div>
<br>
<b> Numero partecipanti interni:</b>
<input type="text" id="n1" value="1"><br>
<button>Aggiungi partecipante</button>
</div>
**input.php
$name = $_POST['name'];
$surname = $_POST['surname'];
$email = $_POST['email'];
$testo = $_POST['testo'];
//inserting data order
$query1 = "INSERT INTO prenotazione (id,nome_rich, cogn_rich, email_rich,oggetto_rich) VALUES (1,'$name','$surname', '$email','$testo')";
//execute the query here
$result = pg_query($conn, $query1 ); //if you are using pg_query and $conn is the connection resource
// Interni
$query = "";
if( !empty( $_POST['iname'] ) ) {
foreach( $_POST['iname'] as $key => $iname ) {
$isurname = empty( $_POST[$key]['isurname'] ) ? NULL : $_POST[$key]['isurname'];
$iemail = empty( $_POST[$key]['iemail'] ) ? NULL : $_POST[$key]['iemail'];
$query .= " ( '$iname', '$isurname', '$iemail' ) ";
}
}
if( !empty( $query ) ) {
$query2 = "INSERT INTO interni (nome_int, cogn_int, email_int) VALUES ".$query;
$result = pg_query($conn, $query2 );
The problem is that when they try to insert data into "interni" and the data are more than one, they can't and i receive an error. ( basically the table "interni" is empty when they try to insert more than one ).
How can i solve the problem?
Thanks you all

Answer 1

You are missing comma in between VALUES.
This is what you are executing: INSERT INTO table VALUES (stuff) (stuff2) (stuff3)
Correct is: INSERT INTO table VALUES (stuff), (stuff2), (stuff3)
Fix:
$iemail = empty( $_POST[$key]['iemail'] ) ? NULL : $_POST[$key]['iemail'];
if($query != "") {
$query .= ",";
}
$query .= " ( '$iname', '$isurname', '$iemail' ) ";