pdo statement failing to execute - php

Question

i have a pdo block for inserting values into my table as follows
try{
$user = 'root';
$pass = null;
$pdo = new PDO('mysql:host=localhost; dbname=divebay', $user, $pass);
$name = $_POST['name'];
$desc = $_POST['description'];
$cond = $_POST['condGroup'];
$sprice = $_POST['sprice'];
$iprice = $_POST['iprice'];
$incprice = $_POST['incprice'];
$duration = $_POST['duration'];
$img = $_POST['img'];
$owner = $_SESSION['username'];
$valid = "set";
$stmt2 = $pdo->prepare("SELECT * FROM auction WHERE ID = :id");
$stmt2->bindParam(":id", $random, PDO::PARAM_INT);
while(isset($valid)){
$random = rand(100000,999999);
$stmt2->execute();
if(!$stmt2->fetch(PDO::FETCH_ASSOC)){
unset($valid);
}
}
$timestamp = time() + ($duration * 24 * 60 * 60);
$stmt = $pdo->prepare("INSERT INTO auction(ID, name, owner, holder, sprice, iprice, incprice, etime, img, condition, description)
VALUES (:id, :name, :owner, :holder, :sprice, :iprice, :incprice:, :etime, :img, :condition, :description");
$stmt->bindParam(':id', $random, PDO::PARAM_INT);
$stmt->bindParam(':name', $name, PDO::PARAM_STR);
$stmt->bindParam(':owner', $owner, PDO::PARAM_STR);
$stmt->bindParam(':holder', $owner, PDO::PARAM_STR);
$stmt->bindParam(':iprice', $iprice, PDO::PARAM_STR);
$stmt->bindParam(':sprice', $sprice, PDO::PARAM_STR);
$stmt->bindParam(':incprice', $incprice, PDO::PARAM_STR);
$stmt->bindParam(':etime', $timestamp, PDO::PARAM_INT);
$stmt->bindParam(':img', $img, PDO::PARAM_STR);
$stmt->bindParam(':condition', $condition, PDO::PARAM_STR);
$stmt->bindParam(':description', $description, PDO::PARAM_STR);
if($stmt->execute()){
$worked ="yes";
}
}catch(PDOException $e){
echo $e->getMessage();
}
i cant tell why this statement wont execute, the $worked variable has not been set when it is the script is run. all database column names and datatypes have been checked correct as they are. ive never had a problem with a statement not executing until now. whats wrong? how do i go about debugging this?

Answer 1

If you setup the database connection with error mode exception PDO will throw an exception if something is wrong with your statement. I also see that you are using the MySQL driver for PDO. If you do this you should always disable emulated prepared statements. So I would write you connection as following (note that I have also set the encoding):
$pdo = new PDO('mysql:host=localhost; dbname=divebay;charset=utf8', $user, $pass);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
Also see this post for more information about this.
Once you have done this you will see that your statement is wrong. You have one missing ) at the end of the statement:
$stmt = $pdo->prepare("INSERT INTO auction(ID, name, owner, holder, sprice, iprice, incprice, etime, img, condition, description)
VALUES (:id, :name, :owner, :holder, :sprice, :iprice, :incprice:, :etime, :img, :condition, :description)");
^

Answer 2

Modify this line:
$stmt = $pdo->prepare("INSERT INTO auction(ID, name, owner, holder, sprice, iprice, incprice, etime, img, condition, description)
VALUES (:id, :name, :owner, :holder, :sprice, :iprice, :incprice:, :etime, :img, :condition, :description");
To
$stmt = $pdo->prepare("INSERT INTO auction(ID, name, owner, holder, sprice, iprice, incprice, etime, img, condition, description)
VALUES (:id, :name, :owner, :holder, :sprice, :iprice, :incprice:, :etime, :img, :condition, :description)");
The difference is the ) at the end.
And tell me if it works now.