Create Canvas for image

[petenaylor]

Hi all

 

I am trying to write a piece of code to take an image, resize it and centre it on a canvas 300 pixels tall by 400 pixels high. I know I need to use imagecopymerged but how do I add it to the below code:

 

$imagelarge = $_FILES['image']['tmp_name'];
$imagelargemain = $_FILES['image']['name'];
$src = imagecreatefromjpeg($imagelarge);

list($width,$height)=getimagesize($imagelarge);
$newwidth=300;
$newheight=($height/$width)*$newwidth;
$tmp=imagecreatetruecolor($newwidth,$newheight);
imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height); 

$filename = WEB_UPLOAD."images/right-images/". $_FILES['image']['name'];
imagejpeg($tmp,$filename,100);
imagedestroy($src);
imagedestroy($tmp);

 

Many thanks for your help!

Pete

[dcro2]

Maybe...

$imagelarge = $_FILES['image']['tmp_name'];
$imagelargemain = $_FILES['image']['name'];
$src = imagecreatefromjpeg($imagelarge);

list($width,$height)=getimagesize($imagelarge);
$newwidth=300;
$newheight=($height/$width)*$newwidth;
$center_x = 300/2;
$center_y = (400/2)-($newheight/2);
$tmp=imagecreatetruecolor(300,400);
imagecopyresampled($tmp,$src,$center_x,$center_y,0,0,$newwidth,$newheight,$width,$height);

$filename = WEB_UPLOAD."images/right-images/". $_FILES['image']['name'];
imagejpeg($tmp,$filename,100);
imagedestroy($src);
imagedestroy($tmp);

[petenaylor]

Wow, thanks for your quick reply!

 

How would I modify it to get a white background?

[dcro2]

Sure thing. Just add

$white = imagecolorallocate($tmp, 255, 255, 255);
imagefill($tmp, 0, 0, $white);

right after

$tmp=imagecreatetruecolor(300,400);

[petenaylor]

Hi there

 

That is great! Many thanks!