Square image thumbnail

**jnscollier** · 05-30-2007, 04:39 AM

So i found a script that does what I want but I'm having trouble "implementing" it. Basically I have all the image file names stored in my table and i want them to all display (the ones uploaded by the particular user logged in) on a page.

Of course I don't want them enormous, just small thumbnail images would do. I don't want them clickable or anything, i don't even want them to enlarge. But because of the whole portrait and landscape thing, i didn't want to hardcode the size in html. so, after searching i found this script:

PHP Code:



function createThumb($source,$dest) {
    $thumb_size = 150;
    $size = getimagesize($source);
    $width = $size[0];
    $height = $size[1];
    if($width> $height) {
        $x = ceil(($width - $height) / 2 );
        $width = $height;
    } elseif($height> $width) {
        $y = ceil(($height - $width) / 2);
        $height = $width;
    }
    $new_im = ImageCreatetruecolor($thumb_size,$thumb_size);
    $im = imagecreatefromjpeg($source);
    imagecopyresampled($new_im,$im,0,0,$x,$y,$thumb_size,$thumb_size,$width,$height);
    imagejpeg($new_im,$dest,100);
}

here's how I'm calling the function:

PHP Code:


<?php 
$path = "upload/$pic1";

echo 
"<img src=\"'".createThumb($path)."'\" />";
?>

(that's in a while statement)

i get a page full of wingdings and it says i'm also missing an argument. can anyone help?? the directions with this script really suck and don't explain anything.

thanks,
sammy

**mbrodin** · 05-30-2007, 07:19 AM

Hi there!

Try this:

PHP Code:


    function createThumb($source)

    {

    $thumb_size = 150;

    $size = getimagesize($source);

    $width = $size[0];

    $height = $size[1];



        if($width > $height)

        {

        $x = ceil( ( $width - $height ) / 2 );

        $width = $height;

        }

        elseif($height > $width)

        {

        $y = ceil( ( $height - $width ) / 2 );

        $height = $width;

        }



    $new_im = ImageCreatetruecolor($thumb_size,$thumb_size);

    $im = imagecreatefromjpeg($source);

    imagecopyresampled($new_im, $im, 0, 0, $x, $y, $thumb_size, $thumb_size, $width, $height);

    imagejpeg($new_im, '', 100);

    }

Make sure it's a JPEG-image you send, else you also must use imagegif() and imagepng etc.

Hopes this was usefull info!

----------------------------------
Edit:
----------------------------------
I forgoted, you can never call the createThumb()-function in a img-tag directly. You must add the the function in a own file let's say thumbnail.php,

Thumbnail.php:

PHP Code:


<?php

    function createThumb($source)

    {

    $thumb_size = 150;

    $size = getimagesize($source);

    $width = $size[0];

    $height = $size[1];



        if($width > $height)

        {

        $x = ceil( ( $width - $height ) / 2 );

        $width = $height;

        }

        elseif($height > $width)

        {

        $y = ceil( ( $height - $width ) / 2 );

        $height = $width;

        }



    $new_im = ImageCreatetruecolor($thumb_size,$thumb_size);

    $im = imagecreatefromjpeg($source);

    imagecopyresampled($new_im, $im, 0, 0, $x, $y, $thumb_size, $thumb_size, $width, $height);

    imagejpeg($new_im, '', 100);

    }





$path = "upload/$pic1";



createThumb($path);

?>

Then you have the page where youre image-tag call the thumbnail.ph, let's say it's name is getImage.php,

getImage.php

PHP Code:


<html>

<head>

<title>Get image</title>

</head>



<body>

<img src="thumbnail.php">

</body>



</html>

I hopes you understand how I mean!

Best regards,
mbrodin

**jnscollier** · 05-30-2007, 07:05 PM

awesome! you answered my next question too about pngs and gifs.... ROCK ON! THANK YOU!

**mbrodin** · 05-30-2007, 11:34 PM

Originally Posted by jnscollier

awesome! you answered my next question too about pngs and gifs.... ROCK ON! THANK YOU!

It's always a plessure to help!

Best regards,
mbrodin

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