Resizing

Another Resize Script with Border Option

Type:	code fragment
Added by:	liquidkernel
Entered:	09/05/2002
Last modified:	05/12/2001
Rating:	(7 votes)
Views:	12945

This script will open an image ($image), resize it to the values you specify ($max_height and $max_width), then if you want, add a border ($addborder). It uses ImageCopyResampled from GD 2 as ImageCopyResized looks too pixelated. Set $image_quality to anything between 0 and 100.

<?php
// Set a few variables

                            $image = "/home/web/images/original.jpg";
 $newimage = "/home/web/images/new.jpg";
 $image_quality = 80;
 $addborder = 1;

                            $max_height = 200;
 $max_width = 300;

                            
 // Main code
 $src_img = ImageCreateFromJpeg($image);
 $orig_x = ImageSX($src_img); 
 $orig_y = ImageSY($src_img);

                            
 $new_y = $max_height;
 $new_x = $orig_x/($orig_y/$max_height);  

                            

                            if ($new_x > $max_width) {

                                $new_x = $max_width;

                                $new_y = $orig_y/($orig_x/$max_width);

                            }

                            
 $dst_img = ImageCreateTrueColor($new_x,$new_y); 
 ImageCopyResampled($dst_img, $src_img, 0, 0, 0, 0, $new_x, $new_y, $orig_x, $orig_y); 

                            

                            if ($addborder == 1) {

                                // Add border

                                $black = ImageColorAllocate($dst_img, 0, 0, 0); 

                                ImageSetThickness($dst_img, 1);

                                ImageLine($dst_img, 0, 0, $new_x, 0, $black);

                                ImageLine($dst_img, 0, 0, 0, $new_y, $black);

                                ImageLine($dst_img, $new_x-1, 0, $new_x-1, $new_y, $black);

                                ImageLine($dst_img, 0, $new_y-1, $new_x, $new_y-1, $black);

                            }

                                
 ImageJpeg($dst_img, $newimage, $image_quality); 
 ImageDestroy($src_img); 

                            ImageDestroy($dst_img); 
?>

Usage Example

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