Comments on: MySQL Prepared Statements and PHP : A small experiment

By: Enlaces rápidos (12-11-08) | Tecnolink Informática Castellón

Enlaces rápidos (12-11-08) | Tecnolink Informática Castellón — Thu, 20 Nov 2008 15:55:37 +0000

[...] MySQL Prepared Statements and PHP : A small experiment [...]

By: rubayeet

rubayeet — Mon, 03 Nov 2008 07:31:40 +0000

@ John J. : I ran the same scripts for 1000, 100 and 10 iterations. Interestingly prepared statement beat traditional query by a marginal 20% in all cases. I’m yet to find a breakpoint. Why don’t you give it a try too?

By: Rubayeet Islam’s Blog: MySQL Prepared Statements and PHP : A small experiment : WebNetiques

Fri, 31 Oct 2008 13:23:38 +0000

[...] a recent post to his blog Rubayeet Islam compared the more traditional way of running a query in MySQL versus a [...]

By: Rubayeet Islam’s Blog: MySQL Prepared Statements and PHP : A small experiment : Dragonfly Networks

Fri, 31 Oct 2008 10:26:18 +0000

[...] a recent post to his blog Rubayeet Islam compared the more traditional way of running a query in MySQL versus a [...]

By: John J.

John J. — Fri, 31 Oct 2008 00:47:14 +0000

Have you tested this script to see where the breakpoint in efficiency is? It’s one thing to do more than 100,000 iterations of the select and another ifyou only do 100 or 10. I’m curious to see what you find.

By: Albi

Albi — Thu, 30 Oct 2008 20:32:52 +0000

Hi, results of this test can be wrong. I recommend you using Apache Benchamark (AB.exe) – small program provided with apache. It allows you to run many tests with diffrent load (many requests at once). I think it should be a bit more accurate in this case .

Sorry for my english, i hope you colud understand me

By: Ecommy

Ecommy — Thu, 30 Oct 2008 19:00:34 +0000

I agree with EllisGL, I’ll never use a code such:

for($i = 1; $i <= 1000; $i++){

$query = “SELECT * FROM user WHERE user_id = $i”;

//run the query and fetch data
}

Rather SELECT * FROM user WHERE user_id<=1000
and then
while($d = mysql_fetch_object($query)) {
//process the script logic
}

Anyway I understand this is just an example, the post is very interesting because it increases the awareness for programmers to keep up to date in using best practices in their daily work

By: EllisGL

EllisGL — Tue, 14 Oct 2008 12:27:32 +0000

Rubayeet – Yeah I think pagination would have been a great example to add to the end of the article. Real world scenario.

By: rubayeet

rubayeet — Tue, 14 Oct 2008 04:34:13 +0000

Michael, the query written above was just to demonstrate the performance gains of prepared queries over to traditional ones. Of course, in a real world situation one must think 10 times before running a query in a for loop.

I think a pagination scenario would have been a much more appropriate example, where you run the same query multiple times just changing the LIMIT parameters.

By: rubayeet

rubayeet — Tue, 14 Oct 2008 04:26:42 +0000

Kudos on the coding examples EllisGL. However the idea was to prevent MySQL from parsing the same query again and again, which I’m not sure being handled in your script.