watermarking & resize without saving

[gerkintrigg]

Hello everyone.

I'd like some advice about watermarking and resizing.

i have a script that will do almost all i need, but it generates a new image and saves it in a "result" folder each time the script runs, and it's bunging up my server.

 

Would you suggest to use a cron to clear the folder on a daily basis or change the script so the output image is downloaded then deleted?

 

Any help'd be much appreciated.

 

Regards,

Neil

[infid3l]

Are you using PHP to resize the image each time it is loaded? That's a real strain on the CPU.

 

Otherwise, post the original code you're using and we'll try to modify it to fit your needs.

[gerkintrigg]

you're probably right...

so you think that I should just resize and watermark once and then reference the re-sized, watermarked image?

 

[MadTechie]

if you post the code you use to create the image we can help..

 

or just create anothe file called image.php

give it a image header and read the image inn..

 

 

image.php?src=myimage.jpg

you also need the image "watermark.png" (reason for the png is the transparency)

<?php  

header('content-type: image/jpeg');  

$watermark = imagecreatefrompng('watermark.png');  
$watermark_width = imagesx($watermark);  
$watermark_height = imagesy($watermark);  
$image = imagecreatetruecolor($watermark_width, $watermark_height);  
$image = imagecreatefromjpeg($_GET['src']);  
$size = getimagesize($_GET['src']);  
$dest_x = $size[0] - $watermark_width - 5;  
$dest_y = $size[1] - $watermark_height - 5;  
imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100);  
imagejpeg($image);  
imagedestroy($image);  
imagedestroy($watermark);  

?>

 

[infid3l]

you're probably right...

so you think that I should just resize and watermark once and then reference the re-sized, watermarked image?

 

 

Exactly. An easy solution is naming the new file something like "originalname_thumb.jpg" then when you run image.php, it will only resize and watermark if the file does not exist already. Post your code!

[darknessmdk]

MadTechie I tried your code you posted and it put a white and black box on my test image. I used a transparent png file

[MadTechie]

Ahh ok, this will work..

(kinda forgot the alphachannel)

 

header('content-type: image/jpeg');  
$watermark = imagecreatefrompng('watermark.png');  
$watermark_width = imagesx($watermark);  
$watermark_height = imagesy($watermark);  
$image = imagecreatetruecolor($watermark_width, $watermark_height);

$image = imagecreatefromjpeg($_GET['src']);  
imagealphablending($image, true);
$size = getimagesize($_GET['src']);  
$dest_x = $size[0] - $watermark_width - 5;  
$dest_y = $size[1] - $watermark_height - 5;  
imagecopy($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height); 

imagejpeg($image);  
imagedestroy($image);  
imagedestroy($watermark);  
?>