Auto generating links?

[Goggle]

hi. I'm setting up a sort of photo gallery, and what I want is for the script to pull the images from a folder, make thumbnails from them, and automatically generate links so when i click the thumbnails, they'll appear larger in a box above the thumbs. Preferably they'd be loading off of the server as they were requested. Is this even possible? If it is, I'd love to be directed to some helpful resources because I'm new to this and right now I'm just working off of assumptions. Tutorials would be amazingly helpful.

Thanks for any help.

[Subbulakshmi]

Hi

Actually u need two PHP files for this.

1. thumbnail.php
2. To execute ur need.

//To create thubnail
<?php
/*
  Tye (tye at tye . ca)
*/
function create_thumbnail($infile,$outfile,$maxw,$maxh,$stretch = FALSE) {
    #clearstatcache();
    if (!is_file($infile)) {
        trigger_error("Cannot open file: $infile",E_USER_WARNING);
        return FALSE;
    }
    if (is_file($outfile)) {
        //trigger_error("Output file already exists: $outfile",E_USER_WARNING);
        return FALSE;
    }

    $functions = array(
        'image/png' => 'ImageCreateFromPng',
        'image/jpeg' => 'ImageCreateFromJpeg',
    );

    // Add GIF support if GD was compiled with it
    if (function_exists('ImageCreateFromGif')) { $functions['image/gif'] = 'ImageCreateFromGif'; }

    $size = getimagesize($infile);

    // Check if mime type is listed above
    if (!$function = $functions[$size['mime']]) {
        trigger_error("MIME Type unsupported: {$size['mime']}",E_USER_WARNING);
        return FALSE;
    }

    // Open source image
    if (!$source_img = $function($infile)) {
        trigger_error("Unable to open source file: $infile",E_USER_WARNING);
        return FALSE;
    }

    $save_function = "image" . strtolower(substr(strrchr($size['mime'],'/'),1));

    // Scale dimensions
    list($neww,$newh) = scale_dimensions($size[0],$size[1],$maxw,$maxh,$stretch);
    
    // Create new image
    $new_img = imagecreatetruecolor($neww,$newh);

    // Copy and resize image
    imagecopyresized($new_img,$source_img,0,0,0,0,$neww,$newh,$size[0],$size[1]);

    // Save output file
    if ($save_function == 'imagejpeg') {
        // Change the JPEG quality here
        if (!$save_function($new_img,$outfile,75)) {
            trigger_error("Unable to save output image",E_USER_WARNING);
            return FALSE;
        }
    } else {
        if (!$save_function($new_img,$outfile)) {
            trigger_error("Unable to save output image",E_USER_WARNING);
            return FALSE;
        }
    }

    chmod($infile,0777);
    // Cleanup
    imagedestroy($source_img);
    imagedestroy($new_img);

    return TRUE;
}
// Scales dimensions
function scale_dimensions($w,$h,$maxw,$maxh,$stretch = FALSE) {
    if ((!$stretch) && (($w < $maxw) || (!$maxw)) &&
        (($h < $maxh) || (!$maxh))) return array($w,$h);
    // Scale Height
    if ((!$maxw) || (($h > $w) && ($maxh)) ) {
        $newh = $maxh;
        $neww = floor($w * $newh /$h);
    }
    // Scale width
    elseif ((!$maxh) || (($w >= $h) && ($maxw))) {
        $neww = $maxw;
        $newh = floor($h * $neww / $w);
    } else
    // Scale neither
        return array($w,$h);
    return array($neww,$newh);
}
?>


//To open the foldre and retrieve the images,converting to thumbnail and providing link



<?php
include("thumbnail.php");
if ($handle = opendir('.')) {
   $i = 1;
    while (false !== ($file = readdir($handle))) {
        //if ($file != "." && $file != "..") {
            if(substr($file,-3)=='jpg')
               {
                 echo "file" . $file;
                 $time=time();
                 $infile = $file;
                 $outfile= $time . $i .".jpg";
                 create_thumbnail($infile,$outfile,60,60,$stretch=FALSE);
                 echo "<a href=$infile><img src=$outfile border=0></a>" . "<br>"; 
                 $i=$i+1;
               }
           //}
    }
    closedir($handle);
}
?>

If there is some errror reply me.

[bokeh]

Have a look at my Simple Image Gallery and if it looks like it could be helpful to your cause you can view the code on My Site.