how to make thumbnails with php

Question

I was just wondering how I can make thumbnails of images stored in hdd and use them in an html page, also I need the thumbnails to be able to enlarge (to their original size

Answer 1

its so simple,if you have any queries mail at karthid@in.com

$ffmpeg = "ffmpeg Installed path"

$flvfile = "source video file with root path"

$png_path " "Destination video file with root path and file type"

exec("$ffmpeg -y -i $flvfile -vframes 1 -ss 00:01:60 -an -vcodec png -f rawvideo -s 110x90 $png_path");

all the best....

Answer 2

maxImageUpload is useful for creating thumbnails, normal image with an original image.

You can use jQuery to enlarge the thumbnail image.

Answer 3

the best way I found is to use the phpThumb class (http://phpthumb.sourceforge.net/).

It has everything you need and more, including caching, filters, watermarks and other cool stuff. Just look at the demo page.

Answer 4

Lookup the PECL extension Imagick. It's usually installable with standard package-managers.

http://se2.php.net/Imagick

You can either dynamically create the thumbnails and serve them using .php files (slow) or make a thumbnail-copy that you store on the server (prefered)

Answer 5

You can use the GD library in PHP to load and resize your images to generate the thumbnails

http://us.php.net/manual/en/image.examples.php

Answer 6

You will need the GD extension enabled. The following code will create a thumbnail file in a subdirectory called ~tmb for a JPEG, PNG and GIF file:

$invalid = true;
if ($file != '.' and $file != '..') {
    if (filetype($path_abs.$file) == "file") {
        $ext = strtolower(substr($file,strrpos($file,'.')+1));
        if ($ext == 'jpg' || $ext == 'jpeg') {
            $origimg = @imagecreatefromjpeg($path_abs.$file);
        } elseif ($ext == 'png') {
            $origimg = @imagecreatefrompng($path_abs.$file);
        } elseif ($ext == 'gif') {
            $origimg = @imagecreatefromgif($path_abs.$file);
        }
        if ($origimg !== false) {
            $nheight = 0;
            $nwidth = 0;
            $use_orig = false;
            if ($width<=160 and $height<160) {
                $nwidth = $width;
                $nheight = $height;
                $use_orig = true;
                $invalid = false;
            } else {
                if ($width>$height and $width>0) {
                    $nheight = intval((160 / $width) * $height);
                    $nwidth = 160;
                } elseif ($height>0) {
                    $nwidth = intval((160 / $height) * $width);
                    $nheight = 160;
                } else {
                    $image = false;
                }
                if ($nheight > 0 and $nwidth > 0) {
                    $newimg = imagecreatetruecolor($nwidth, $nheight);
                    $bgc = imagecolorallocate ($newimg, 238, 238, 238);
                    imagefilledrectangle ($newimg, 0, 0, $nwidth, $nheight, $bgc);
                    if (@imagecopyresampled($newimg, $origimg, 0, 0, 0, 0, $nwidth, $nheight, $width, $height)) {
                        $image = imagejpeg($newimg, $path_abs.'~tmb/'.$file);
                        $invalid = false;
                    } elseif (@imagecopyresized($newimg, $origimg, 0, 0, 0, 0, $nwidth, $nheight, $width, $height)) {
                        $image = imagejpeg($newimg, $path_abs.'~tmb/'.$file);
                        $invalid = false;
                    }
                }
            }
        }
    }
}
if (!$invalid) {
    if ($use_orig) {
        echo '<img src="'.$file.'" alt="" />';
    } else {
        echo '<img src="~tmb/'.$file.'" alt="" />';
    }
} else {
    echo '<p>Error for file '.$file.'</p>';
}

In the above code, it resizes them to 160x160, though maintaining aspect ratio.