|
|
|
|
|
|
| |
| <?php
function thumb_makethumb() {
switch($_FILES['image_file']['type']){
case 'image/png':
case 'image/x-png':
$type = 'png';
break;
case 'image/jpeg':
case 'image/pjpeg':
$type = 'jpg';
break;
case 'image/gif':
$type = 'gif';
break;
//case 'image/tiff':
//$type = 'tif';
//break;
//case 'image/x-photoshop':
// $type = 'psd';
// break;
default:
$type = 'none';
break;
}
// Make temporary file name and location a variable
$temp_file_name = '$_FILES['image_file']['name'];
// Get image attributes of temporary file
$image_attribs = getimagesize($temp_file_name);
// Make temporary file a resource
if($type == 'png')
{
$im_temp = imageCreateFromPNG($temp_file_name);
}
elseif($type == 'jpg')
{
$im_temp = imageCreateFromJPEG($temp_file_name);
}
elseif($type == 'gif')
{
$im_temp = imageCreateFromGIF($temp_file_name);
}
// Set max width and height. Largest dimension will be set the this size either by
// shrinking or enlarging the image
$th_max_width = 150;
$th_max_height = 150;
// Find ration of dimensions
$ratio = ($image_attribs[0] > $image_attribs[1]) ? $th_max_width/$image_attribs[0] : $th_max_height/$image_attribs[1];
// Scale to max width/height using ratio
$th_width = $image_attribs[0] * $ratio;
$th_height = $image_attribs[1] * $ratio;
// Create a true colour image and use anti-aliasing
$im_new = imagecreatetruecolor($th_width,$th_height);
imageAntiAlias($im_new,true);
// Set thumb folder and file name
$th_file_name = 'thumbs/' . $_FILES['image_file']['name'];
// And copy the original image resized onto the new thumbnail.
imageCopyResampled($im_new,$im_temp,0,0,0,0,$th_width,$th_height, $image_attribs[0], $image_attribs[1]);
// Output to file/browser as a PNG. Can also output as JPEG using the imageJPEG() function.
header("content-type: image/png");
imagePNG($im_new);
// Clean up image resource
imagedestroy($im_new);
}
?> | |
This function can be called to act on an uploaded image and output a thumbnail of it to the browser. Can only operate on GIF, PNG and JPEG files as these are the only filetypes the GD library can work with. Requires the GD library to be installed on the webserver. |
|
| Create Thumbnails - resize an image - jpeg, jpg, gif, png to the specifed width and height in proportion without loosing out on pixcel quality.
Categories : PHP, GD image library, Graphics | | | Display a bar chart based on random values.
Categories : Graphics, PHP, GD image library, Charts and Graphs | | | Advanced Image WaterMarker
Categories : PHP, PHP Classes, GD image library, Graphics, Object Oriented | | | Line graphics generation library written in PHP + GD library (spanish comments)
Categories : PHP, Graphics, GD image library | | | A captcha image allows you to prevent spam posting when users reload the page and stop bots from submitting forms automatically. This version allows you to use your own fonts (.ttf) to show the text.
Categories : PHP, Security, Graphics, GD image library | | | Simple PHP Bar Graph using GD library
Categories : PHP, GD image library, Graphics, Arrays | | | CAPTCHA[Image verification]
Categories : PHP, Security, GD image library, Graphics, Sessions | | | Simple class that uses GD to draw pie charts. After the class definition there's some sample code to demonstrate how you use the class.
Categories : Graphics, PHP, PHP Classes, GD image library, Charts and Graphs | | | imageMarker v 3.00 with new advanced features
Categories : PHP, PHP Classes, Graphics, GD image library | | | Generate image with random number (CAPTCHA)
Categories : PHP, GD image library, Graphics, Security | | | Image Generation Class ( PNG Format )
Categories : PHP, GD image library, PHP Classes, Graphics | | | PHP Image Compression using GD library
Categories : PHP, Compression, GD image library, Graphics | | | a simple pie-chart in php3 (with gd)
Categories : PHP, Graphics, GD image library, Charts and Graphs | | | crop and resize image class using gd library function
Categories : PHP, PHP Classes, GD image library, Graphics | | | PHP Email image generator - hide your email from bots - using the GD Library
Categories : PHP, Graphics, GD image library, Beginner Guides | |
| | | | Tim Johnson wrote : 1125
Knowing *very* little about PHP (yet) it would be nice to have a practical example of using the code.
| | | | Sander van der Linden wrote : 1130
there`s a typo in:
// Make temporary file name and location a variable
$temp_file_name = `$_FILES[`image_file`][`name`];
should be
// Make temporary file name and location a variable
$temp_file_name = `$_FILES[`image_file`][`name`]`;
as far as I know, but Im a php noob :)
| | | | lucas seiden wrote :1637
i ran this script and the first thing that came to me was an error on line 34.
as a user already commented out but gave a wrong correction. the right way to use it would be:
// Make temporary file name and location a variable
$temp_file_name = `$_FILES[image_file][name]`;
| |
|
|
|
