on the fly help display image

[lucan]

I have a script that uploads my images to a folder and database which works fine. I am looking to display my images on the fly to resize them. How do I intergrate my image output string with the fly string.

 

Current output

echo '<img src="' . $dir . '/' . $image_id . '.jpg">';

 

Fly string

<img src="/scripts/thumb.php?src=/images/whatever.jpg&h=150&w=150&zc=1" alt="" />

 

Thanks for your help

[Unirawan]

You can use PHP GD or PHP IMAGEMAJIC to process the image on the fly.

 

 

[Unirawan]

You can use PHP GD or PHP IMAGEMAJIC to process the image on the fly.

 

that said, I highly recommend automatically creating thumbs once images are uploaded and directly accessing them thumbs, as it will save server resources, becasue you wont be using all that image processing cpu cycles and ram on each request.

[JKG]

i agree with dealing with the resize on upload, i have a nifty cropper and resize that i did a good while back

<?php

function CropImage($NewWidth, $NewHeight, $source, $filetype, $dest)
{	
list($Width, $Height) = getimagesize($source);

switch($filetype)
{
	case 'gif':
	$SourceImage = imagecreatefromgif($source);
	break;

	case 'jpg':
	$SourceImage = imagecreatefromjpeg($source);
	break;

	case 'png':
	$SourceImage = imagecreatefrompng($source);
	break;
}

$NewImage = imagecreatetruecolor($NewWidth, $NewHeight);

$WidthRatio = $Width/$NewWidth;
$HeightRatio = $Height/$NewHeight;

$HalfNewHeight = $NewHeight/2;
$HalfNewWidth = $NewWidth/2;

if($Width > $Height)
{
	$AdjustedWidth = $Width / $HeightRatio;
	$HalfWidth = $AdjustedWidth / 2;
	$IntWidth = $HalfWidth - $HalfNewWidth;
	imagecopyresampled($NewImage, $SourceImage, -$IntWidth, 0, 0, 0, $AdjustedWidth, $NewHeight, $Width, $Height);
}
elseif(($Width < $Height) || ($Width == $Height))
{
	$AdjustedHeight = $Height / $WidthRatio;
	$HalfHeight = $AdjustedHeight / 2;
	$IntHeight = $HalfHeight - $HalfNewHeight;
	imagecopyresampled($NewImage, $SourceImage, 0, -$IntHeight, 0, 0, $NewWidth, $AdjustedHeight, $Width, $Height);
}
else
{
	imagecopyresampled($NewImage, $SourceImage, 0, 0, 0, 0, $NewWidth, $NewHeight, $Width, $Height);
}
imagejpeg($NewImage, $dest, 100);
}

?>

feel free to use and abuse.

[lucan]

you are right changing bthe size on upload would be better but I need to use the same image a number of time with different sizes and location so I think  on the fly would be best this time .

[JKG]

ok, so you understand Unirawan's first suggestion?

[QuickOldCar]

This can do what you need, follow the instructions and is lots of info there you can read if want to.

 

http://phpthumb.sourceforge.net/