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Multiple PDOException after each execute

Posted on 2011-02-28

2 solutions

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Last Modified: 2012-05-11

Hi,

I have this bit of code and I'm wondering if I can use multiple PDOException after each execute function since there are several SELECT statements. There is an error in my PHP IDE (using nusphere) when I add in the:

catch(PDOException $e) {...}

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after each execute()

Thank you,
Victor

/**
      * Get selected product from products table for the given product_id
      * @return int (success == 1), array $row[all fields from products table], int $count
      * @param product_id (primary key to product_id.products)
      * @access public
      */
      public function getSelectedProductInfo($product_id) {

         try {
            /* Verify connection */
            $q = "SELECT * FROM products where product_id=".$product_id;
            $stmt = db::getConnect()->prepare($q);
            $countTest = $stmt->execute();

            //return count
            $count = $stmt->rowCount();

            //success
            if ($count >= 1) {
               $row = $stmt->fetchAll(PDO::FETCH_ASSOC);

               /**
               * Get product_type_name form product_types table 
               * (described as Category: on product-scores.php page)
               * product_type.products = product_type_id.product_types
               * @param int product_type.products ($row['product_type'])
               */
               $product_type = $row['product_type'];
               $q2 = "SELECT product_type_name FROM product_types where product_type_id=".$product_type;
               $stmt2 = db::getConnect()->prepare($q2);
               $stmt2->execute();
               $countProdTypeName = $stmt2->rowCount(); //return count to verify

               if ($countProdTypeName >= 1) {
                  $rowProdTypeName = $stmt2->fetchAll(PDO::FETCH_ASSOC);
               }                

               /**
               * Get brand_name form product_brands table 
               * (described as Brand: on product-scores.php page)
               * product_brand.products = brand_id.product_brands
               * @param int product_brand.products ($row['product_brand'])
               */
               $product_brand = $row['product_brand'];
               $q3 = "SELECT brand_name FROM product_brands where brand_id=".$product_brand;
               $stmt3 = db::getConnect()->prepare($q3);
               $stmt3->execute();
               $countBrandName = $stmt3->rowCount(); //return count to verify

               if ($countBrandName >= 1) {
                  $rowBrandName = $stmt3->fetchAll(PDO::FETCH_ASSOC);
               }   

               /**
               * Get sub_brand_name form product_sub_brands table
               * (described as Product Line: on product-scores.php page)
               * product_sub_brand.products = sub_brand_id.product_sub_brands
               * @param int product_sub_brand.products ($row['product_sub_brand']) 
               */
               $product_sub_brand = $row['product_sub_brand'];
               $q4 = "SELECT sub_brand_name FROM product_sub_brands where sub_brand_id=".$product_sub_brand;
               $stmt4 = db::getConnect()->prepare($q4);
               $stmt4->execute();
               $countSubBrandName = $stmt4->rowCount(); //return count to verify

               if ($countSubBrandName >= 1) {
                  $rowSubBrandName = $stmt4->fetchAll(PDO::FETCH_ASSOC);
               }

               return array(1, $row, $count, $rowProdTypeName, $rowBrandName, $rowSubBrandName);
            }
         }
         catch(PDOException $e) {
            $count = 0;
            return array(0, $e->getMessage(), $count);
         }
      }

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Comment

Question by:Victor Kimura

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4 Comments

LVL 27

Accepted Solution

by:Lukasz Chmielewski

Lukasz Chmielewski earned 500 total points

ID: 349961612011-02-28

You could try to throw new exception after each select
like:
$stmt2->execute() or throw new Exception('something wrong here STMT2.');

Author Comment

by:Victor Kimura

ID: 349967612011-02-28

So starting from line 28 could I do something like this?

$product_type = $row['product_type'];
               $q2 = "SELECT product_type_name FROM product_types where product_type_id=".$product_type;
               $stmt2 = db::getConnect()->prepare($q2);
               $stmt2->execute();
               $countProdTypeName = $stmt2->rowCount(); //return count to verify

               if ($countProdTypeName >= 1) {
                  $rowProdTypeName = $stmt2->fetchAll(PDO::FETCH_ASSOC);
               }  throw new Exception('something wrong here STMT2.');

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Doing the following gives me an error:

 if ($countProdTypeName >= 1) {
                  $rowProdTypeName = $stmt2->fetchAll(PDO::FETCH_ASSOC);
               } catch(PDOException $e) {
            $count = 0;
            return array(0, $e->getMessage(), $count);
         }

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I'm using PDO for the connection handle.

LVL 27

Assisted Solution

by:Lukasz Chmielewski

Lukasz Chmielewski earned 500 total points

ID: 349968552011-02-28

Rather on execute:

               $product_type = $row['product_type'];
               $q2 = "SELECT product_type_name FROM product_types where product_type_id=".$product_type;
               $stmt2 = db::getConnect()->prepare($q2);
// BELOW
               $stmt2->execute() or throw new Exception('something wrong here STMT2.');
               $countProdTypeName = $stmt2->rowCount(); //return count to verify

               if ($countProdTypeName >= 1) {
                  $rowProdTypeName = $stmt2->fetchAll(PDO::FETCH_ASSOC);
               }

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Throwing an exception goes out of the try statement.

Author Comment

by:Victor Kimura

ID: 350027272011-02-28

Thanks, Roads Roads.

So this line here:

$stmt2->execute() or throw new Exception('something wrong here STMT2.');

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how do I return the error message in the array like I do with the catch in this code:

catch(PDOException $e) {
            $count = 0;
            return array(0, $e->getMessage(), $count);
         }

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Thanks for your help.

Victor

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