convert string to integer in php pdo - php

Question

How do I convert string data type into integer with php pdo? I have tried using PDO::PARAM_INT and PDO::PARAM_STR but return false and error when I tried to insert data to postgresql. Is there any way to solve this?
here the codes :
function create(){
// to get time-stamp for 'created' field
$this->getTimestamp();
//write query
$query = "INSERT INTO
" . $this->table_name . "
(id_barang, nama_barang, harga_beli, harga_jual, created) VALUES (?, ?, ?, ?, ?)";
$stmt = $this->conn->prepare($query);
$stmt->bindParam(1, $this->id_barang, PDO::PARAM_STR);
$stmt->bindParam(2, $this->nama_barang, PDO::PARAM_STR);
$stmt->bindParam(3, $this->harga_beli, PDO::PARAM_INT);
$stmt->bindParam(4, $this->harga_jual, PDO::PARAM_INT);
$stmt->bindParam(5, $this->created);
if($stmt->execute()){
return true;
}else{
return false;
}
}
it return false and i'm using alert if function create() false.
harga_beli and harga_jual are integer data type in postgresql. in html form i'm using javascript function to separate the zero. example : 60.000, and the numbers should be an integer on database.

Answer 1

You can use intval function :
echo intval('042'); // 42

Answer 2

You can leave it up to PDO to do the conversion
If execute is false check for errors
The proper way to know if it is successful is to check the affected row
$stmt->bindParam(1, $this->id_barang);
$stmt->bindParam(2, $this->nama_barang);
$stmt->bindParam(3, $this->harga_beli);
$stmt->bindParam(4, $this->harga_jual);
$stmt->bindParam(5, $this->created);
$stmt->execute() or die('error:'.$this->conn->errorInfo());
if($stmt->rowCount() > 0){
return true;
}else{
return false;
}