Comments on: Automatically Creating a Thumbnail With PHP http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/ presented by Site Potion Thu, 03 Jun 2010 12:34:10 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Clay http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/comment-page-1/#comment-60531 Clay Thu, 22 Jan 2009 14:41:17 +0000 http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/#comment-60531 I've adapted this code a bit over the last two years. Here it is in function form: function _resizeImage($imagesource,$imagedestination,$mimetype,$new_w = 0,$new_h = 0) { if($new_w == 0 && $new_h == 0) { return 'You must provide a new width or height value.'; } if($mimetype == 'image/jpeg') { $src_img = imagecreatefromjpeg($imagesource); } if($mimetype == 'image/gif') { $src_img = imagecreatefromgif($imagesource); } if($mimetype == 'image/png') { $src_img = imagecreatefrompng($imagesource); } $origw=imagesx($src_img); $origh=imagesy($src_img); if($new_w > 0 && $new_h == 0) { $scale = $origw/$new_w; $new_h = round($origh/$scale,0); } if($new_h > 0 && $new_w == 0) { $scale = $origh/$new_h; $new_w = round($origw/$scale,0); } $dst_img = imagecreatetruecolor($new_w,$new_h); imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img)); if($mimetype == 'image/jpeg') { return imagejpeg($dst_img, $imagedestination); } if($mimetype == 'image/gif') { return imagegif($dst_img, $imagedestination); } if($mimetype == 'image/png') { return imagepng($dst_img, $imagedestination); } } I’ve adapted this code a bit over the last two years. Here it is in function form:

function _resizeImage($imagesource,$imagedestination,$mimetype,$new_w = 0,$new_h = 0) {
if($new_w == 0 && $new_h == 0) {
return ‘You must provide a new width or height value.’;
}
if($mimetype == ‘image/jpeg’) { $src_img = imagecreatefromjpeg($imagesource); }
if($mimetype == ‘image/gif’) { $src_img = imagecreatefromgif($imagesource); }
if($mimetype == ‘image/png’) { $src_img = imagecreatefrompng($imagesource); }

$origw=imagesx($src_img);
$origh=imagesy($src_img);
if($new_w > 0 && $new_h == 0) {
$scale = $origw/$new_w;
$new_h = round($origh/$scale,0);
}
if($new_h > 0 && $new_w == 0) {
$scale = $origh/$new_h;
$new_w = round($origw/$scale,0);
}

$dst_img = imagecreatetruecolor($new_w,$new_h);
imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
if($mimetype == ‘image/jpeg’) { return imagejpeg($dst_img, $imagedestination); }
if($mimetype == ‘image/gif’) { return imagegif($dst_img, $imagedestination); }
if($mimetype == ‘image/png’) { return imagepng($dst_img, $imagedestination); }
}

]]> By: Clay http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/comment-page-1/#comment-36718 Clay Fri, 07 Sep 2007 11:05:35 +0000 http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/#comment-36718 Shaaa: the most likely explanation is that you are using a version of PHP that does not include the GD library automatically bundled. (I believe they started bundling it with the core PHP code in version 4.3.) You can either upgrade your version of PHP or manually set up the GD library. You can download the files and find instructions at: http://www.libgd.org/Main_Page Shaaa: the most likely explanation is that you are using a version of PHP that does not include the GD library automatically bundled. (I believe they started bundling it with the core PHP code in version 4.3.) You can either upgrade your version of PHP or manually set up the GD library. You can download the files and find instructions at:

http://www.libgd.org/Main_Page

]]> By: Shaaa http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/comment-page-1/#comment-36717 Shaaa Fri, 07 Sep 2007 09:21:15 +0000 http://www.indywebshop.com/bestpractices/2006/12/13/automatically-creating-a-thumbnail-with-php/#comment-36717 This code is not working... can any one help me? it says... "Call to undefined function imagecreatefromjpeg()" This code is not working…

can any one help me?

it says…

“Call to undefined function imagecreatefromjpeg()”

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