Implement If condition in PHP array - php

Question

I am new to PHP function. I think following problem can be solved using function. Here I am able to store html form data in database which is passed from ajax using following code. But I am little bit confused where to implement if condition. If Data has been submitted, I want to stop data replication.
My working php code
if(isset($_POST["section_name"])){
$section_name = $_POST["section_name"];
$class_id = $_POST["class_id"];
for($count = 0; $count<count($section_name); $count++)
{
$query =$con->prepare('INSERT INTO section(class_id, section_name) VALUES (:class_id, :section_name)');
$query->bindParam(':class_id', $class_id);
$query->bindParam(':section_name', $section_name[$count]);
$query->execute();
echo "Section has been assigned";
}
}
Now, I want to include above code in following else condition.
$query =$con->query('SELECT * FROM section');
while($row=$query->fetch(PDO::FETCH_ASSOC)){
if(($_POST["class_id"]==$row["class_id"])&&($_POST["section_name"]==$row["section_name"])){
echo "Section has already assigned in this class ";
}
else{
// insert...
}
}
When I try to merge code, I can't handle. Please help me

Answer 1

You have pretty much everything, you just need to wrap it in a function like this:
function insert() {
if(isset($_POST["section_name"])){
$section_name = $_POST["section_name"];
$class_id = $_POST["class_id"];
for($count = 0; $count<count($section_name); $count++)
{
$query =$con->prepare('INSERT INTO section(class_id, section_name) VALUES (:class_id, :section_name)');
$query->bindParam(':class_id', $class_id);
$query->bindParam(':section_name', $section_name[$count]);
$query->execute();
echo "Section has been assigned";
}
}
}
And then you call it like this:
$query =$con->query('SELECT * FROM section');
while($row=$query->fetch(PDO::FETCH_ASSOC)){
if(($_POST["class_id"]==$row["class_id"])&&($_POST["section_name"]==$row["section_name"])){
echo "Section has already assigned in this class ";
}
else{
insert();
}
}