Get data from 2 tables and insert into another - php

Question

I need your help..
I am I trying to retrieve data from two tables and insert into another using php +mysql, but it doesn't work. It shows me this message (Query got problem).
This is my code:
$emp_id = $_SESSION['emp_id'];
$from= "select department.name from department,employee where emp_id='$emp_id' and department.dept_id = employee.dept_id ";
$result_form = mysql_query($from);
$dept_from = mysql_fetch_assoc($result_form);
$dept_name = $dept_from['department.name'];
$query = "INSERT INTO Student (date, description, from, emp_id, to)
VALUES
(now(),'$_POST[description]','$dept_name','$emp_id','$_POST[to]')";
$result = mysql_query($query);
if(!$result)
{die("Query got problem").(mysql_error());}
else{

Answer 1

Try this:
Your mysql query in not proper use like given below:
$emp_id = $_SESSION['emp_id'];
$from= "SELECT d.name FROM department d LEFT JOIN employee e ON d.dept_id = e.dept_id WHERE emp_id = '$emp_id' ";
$result_form = mysql_query($from);
$dept_from = mysql_fetch_assoc($result_form);
$dept_name = $dept_from['name'];
$query = "INSERT INTO Student (`date`, `description`, `from`, `emp_id`, `to`) VALUES (now(),'".$_POST[description]."','".$dept_name."','".$emp_id."','".$_POST[to]."')";
$result = mysql_query($query);
Let me know if you need further help.

Answer 2

Backticks might do the trick here.
$query = "INSERT INTO Student (`date`, `description`, `from`, `emp_id`, `to`)
VALUES
(now(),'$_POST[description]','$dept_name','$emp_id','$_POST[to]')";

Answer 3

Try this
$query = "INSERT INTO Student (date, description, from, emp_id, to)
VALUES
(now(),' " . $_POST['description'] ."','$dept_name','$emp_id','". $_POST['to']. "')";

Answer 4

Working Code below
$emp_id = 1;
$from= "select department.name from test.department,test.employee where emp_id='$emp_id' and department.dept_id = employee.dept_id ";
$result_form = mysql_query($from);
$dept_from = mysql_fetch_assoc($result_form);
$dept_name = $dept_from['name'];
$date = date("Y-m-d H:i:s");
$description = isset($_POST[description])?$_POST[description]:"none";
$to = isset($_POST[to])?$_POST[to]:"none";
$query = sprintf("INSERT INTO `test`.`test`
(`date`,
`description`,
`from`,
`emp_id`,
`to`)
VALUES
(
'%s',
'%s',
'%s',
'%s',
'%s'
);
",
$date,$description,$dept_name,$emp_id,$to);
$result = mysql_query($query);
if(!$result)
{
die("Query got problem").(mysql_error());
}