INSERT query does not work, empty array? - php

Question

<?php
class Worker extends Core {
public $name;
public $surname;
public $dob;
public $skills;
public $postcode;
public $street;
public $email;
public $tel;
public $ern;
public $result;
public function __construct () {
$this->name = 'name';
$this->surname = 'surname';
$this->dob = 'dob';
$this->skills = 'skills';
$this->postcode = 'postcode';
$this->street = 'street';
$this->email = 'email';
$this->tel = 'tel';
$this->ern = 'ern';
}
//Saving worker data to database, need provide group name (table name)
public function saveWorker($group) {
if(!(isset($this->conn))) parent::__construct();
try
{
$this->conn ->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); //catch exceptions
$q = 'INSERT INTO :group (name, surname, dob, skills, postcode, street, email, tel, erefnumber) VALUES (
:name,
:surname,
:dob,
:skills,
:postcode,
:street,
:email,
:tel,
:erefnumber)'; //sql query with group name
$stmt = $this->conn->prepare($q);
$stmt -> bindValue(':group', $group, PDO::PARAM_STR);
$stmt -> bindValue(':name', $this->name, PDO::PARAM_STR);
$stmt -> bindValue(':surname', $this->surname, PDO::PARAM_STR);
$stmt -> bindValue(':dob', $this->dob, PDO::PARAM_STR);
$stmt -> bindValue(':skills', $this->skills, PDO::PARAM_STR);
$stmt -> bindValue(':postcode', $this->postcode, PDO::PARAM_STR);
$stmt -> bindValue(':street', $this->street, PDO::PARAM_STR);
$stmt -> bindValue(':email', $this->email, PDO::PARAM_STR);
$stmt -> bindValue(':tel', $this->tel, PDO::PARAM_STR);
$stmt -> bindValue(':erefnumber', $this->erefnumber, PDO::PARAM_STR);
$results = $stmt->execute();
if($results > 0)
{
return 'Dodano: '.$ilosc.' rekordow';
}
else
{
return 'Wystapil blad podczas dodawania rekordow!';
}
}
catch(PDOException $e)
{
return 'There was some error: ' . $e->getMessage();
}
unset($stmt);
}
//no exceptions
public function getWorker()
{
$workerData = array (
"name" => $this->name,
"surname" => $this->surname,
"dob" => $this->dob,
"skills" => $this->skills,
"postcode" => $this->postcode,
"street" => $this->street,
"email" => $this->email,
"tel" => $this->tel,
"tel" => $this->erefnumber
);
return $workerData;
} // end getWorker();
public function searchWorker($name, $surname, $dob, $skills, $postcode, $street, $email, $tel, $erefnumber) {
}
function deleteWorker() {
}
function getEmployer() {}
public function __sleep () {
parent::__sleep();
}
} // end Person;
//DB connection
class Core {
public $conn;
public function __construct() {
$this->dbConnect();
}
public function dbConnect() {
$host = 'localhost';
$port = '3307';
$username = 'modium_test';
$password = 'test';
$database ='modium_test';
try{
$this->conn = new PDO('mysql:host='.$host.';dbname='.$database.';port='.$port, $username, $password );
echo 'Connection successful!';
echo var_dump($this->conn);
}
catch(PDOException $e){
echo 'Error: ' . $e->getMessage();
}
}
public function __sleep () {
unset($this->conn);
}
}
}
The query just doesn't work. Every previous function worked, but when I try to INSERT tables via sql query, nothing happends.
Worker is an object it's created well, then i get some POST array assigned to it, wich also works fine then i try to saveWorker but it gives nothing.
The invoking line:
var_dump($worker);
if (isset($worker)) echo 'worker is set';
if (isset($worker->conn)) echo 'thers connection is set';
$worker->saveWorker('workers');
With added lines:
echo "\nPDO::errorInfo():\n";
print_r($stmt->errorInfo());
print_r($this->conn->errorInfo());
echo "end of error info";
It gives me:
PDO::errorInfo():
Array ( [0] => ) Array ( [0] => 00000 )
end of error info

Answer 1

$stmt->execute() returns a boolean value (Manual). Try,
$results = $stmt->execute();
if($results !== FALSE) {
return 'Dodano: '.$ilosc.' rekordow';
} else {
return 'Wystapil blad podczas dodawania rekordow!';
}
Also, you cannot bind tablename.