randome fonction with crop fonction for displaying some pictures

Hello

I ‘m new wordpress 2.51 user I would like to know if it’s possible with your plug in to display pictures on page with this idea:

[title picture](picture url) :

// do a querty with all the id's with local image tags ![image_name](image_url) -- random results
$query = "SELECT id FROM wp_posts WHERE post_status='publish' AND post_content REGEXP '![\[][^\]\)]([^\)])' ORDER BY RAND()";
$content_query = "SELECT post_content FROM wp_posts WHERE";

// these are regular expressions for extracting urls from above results
$full_pattern = "/!\[.*?\]\(.*?\)/s";
$url_pattern = "/\]\(.*?\)/s";
$title_pattern = "/!\[.*?\]/s";
$url_start = 2;
$title_start = 2;
// a function that grabs all the above data and puts it into an array named $urls
$urls = getImages('blog', $how_many, $query, $content_query, $full_pattern, $url_pattern, $url_start, $title_pattern, $title_start);

I would like to make something like this : http://www.abstractmachine.net/thesis/randomizer.php

but I ‘m searching how to make something like that because I would like to use this system with possibility to see post, page or other when you click on picture. Maybe I must use wp request in database for to see wp post?

But I see an idea interesting I think : [code]`crop.php :
?php
$w=$_GET['w'];
$h=isset($_GET['h'])?$_GET['h']:$w; // h est facultatif, =w par défaut
$x=isset($_GET['x'])?$_GET['x']:0; // x est facultatif, 0 par défaut
$y=isset($_GET['y'])?$_GET['y']:0; // y est facultatif, 0 par défaut
$filename=$_GET['src'];
header('Content-type: image/jpg');
header('Content-Disposition: attachment; filename='.$src);
$image = imagecreatefromjpeg($filename);
$crop = imagecreatetruecolor($w,$h);
imagecopy ( $crop, $image, 0, 0, $x, $y, $w, $h );
imagejpeg($crop);
? `[/code]
maybe some one send me suggestion or good idea.