Mega Code Archive

 

Categories / Php / Graphics

 

Thumbnail Function

<?php function make_thumb($imagefile, $new_w=75, $new_h=75) { // get source image info. $img_data=getimagesize($imagefile); $src_w=$img_data[0]; $src_h=$img_data[1]; // get source image $src_img=ImageCreateFromPNG($imagefile) or die ("Cannot open source"); // create a target image $dst_img=imagecreate($new_w,$new_h); // create the thumbnail imagecopyresized($dst_img,$src_img, 0, 0, 0, 0, $new_w, $new_h, $src_w, $src _h); // switch to subdir. chdir("thumbnails"); // if the image already exists blow it away. if ( file_exists("thumb_".$imagefile) ) { unlink("thumb_".$imagefile); } // I use thumb_ to show that it is a thumbnail. // save the new image as a png. imagepng($dst_img,"thumb_".$imagefile); // free up the memory. ImageDestroy($src_img); ImageDestroy($dst_img); } // demo of use. make_thumb("image1.png"); make_thumb("image1.png", 200, 200); ?>