Solved

Transitioning to PDO/MySQL.  Need help  with SELECT statement, Do I have to bind value?

Posted on 2014-12-20
6
91 Views
Last Modified: 2014-12-20
On a select statement without a WHERE clause, do I have to bind anything using PDO?

I am getting the following error:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 32 bytes)
on "$query2->execute();" line.


$query2 = $conn->prepare('SELECT * FROM `download');
// Do I bind a value here?
$query2->execute();

while ($row2 = $query2->fetch(PDO::FETCH_ASSOC))
{
    
 echo $row2['image']."<BR>";

}

Open in new window

0
Comment
Question by:lawrence_dev
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 58

Accepted Solution

by:
Gary earned 500 total points
ID: 40511308
No you can just do

$query2 = $conn->query('SELECT * FROM `download');

while ($row2 = $query2->fetch(PDO::FETCH_ASSOC))
{
...

Open in new window


But that error means you are running out of memory
Are there a lot of rows being returned?

Search the php.ini file for
memory_limit =

...and increase the limit.
0
 

Author Comment

by:lawrence_dev
ID: 40511320
Thanks Gary!
I have 17040 rows,  None being returned.  If I place php.ini in the same folder, PDO stops working for some reason...  

Still working on it...
0
 
LVL 58

Expert Comment

by:Gary
ID: 40511324
Add this to the top of the php page to get any errors reported

    error_reporting(E_ALL);

32 MB is rather small for a site, 64 or 128 would be better.
But you are returning a lot of rows - is there a reason?

If you are using a custom php.ini file you should place it in the site root.
0
MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

 
LVL 58

Expert Comment

by:Gary
ID: 40511325
I've just noticed a syntax error in your code

Should be (no need for the backticks and you were missing the closing one)

$query2 = $conn->query('SELECT * FROM download');

Open in new window

0
 

Author Comment

by:lawrence_dev
ID: 40511331
Thanks Gary for all of your help!!  Memory Limit issue with IonCube required for PDO.  Fixed it and it is good!
0
 

Author Closing Comment

by:lawrence_dev
ID: 40511333
Thanks again!
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I imagine that there are some, like me, who require a way of getting currency exchange rates for implementation in web project from time to time, so I thought I would share a solution that I have developed for this purpose. It turns out that Yaho…
Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this. Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it i…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…

695 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question