imagecolortransparent is probably not what you want here if you’re merging images, as single-colour transparency is nasty. Instead, try it with a transparent fill mask like so: <?php $image = imagecreatetruecolor(100, 100); // Transparent Background imagealphablending($image, false); $transparency = imagecolorallocatealpha($image, 0, 0, 0, 127); imagefill($image, 0, 0, $transparency); imagesavealpha($image, true); // Drawing over $black = … Read more
16711680 (decimal) is 0x00FF0000 (hexadecimal) 00 – Alpha value (0 dec) FF – Red (255 dec) 00 – Green (0 dec) 00 – Blue (0 dec) See http://www.php.net/manual/en/function.imagecolorallocatealpha.php to set the alpha byte Edit: Also, to answer your first question — yes, you can create a color without an image resource (and, consequently without a … Read more
The best approach for this situation may be to create a new image in memory with the combined dimensions you desire, then copy or resample the existing images to the new image, and then save the new image to disk. For example: function merge($filename_x, $filename_y, $filename_result) { // Get dimensions for specified images list($width_x, $height_x) … Read more
$image1 = imagecreatefrompng(‘a.png’); //300 x 300 $image2 = imagecreatefrompng(‘b.png’); //150 x 150 imagecopymerge($image1, $image2, 0, 0, 75, 75, 150, 150, 50); this should be all you need. $image1 should hold the merged image where image2 has been overlayed with 50% opacity. the last argument is the alpha of the merged copy. http://php.net/manual/en/function.imagecopymerge.php
Check php_gd2.dll is in your extension directory and uncomment ;extension=php_gd2.dll of your php.ini.
While searching for a solution to the same problem I noticed that the php.net site has a follow-up to the code Davide and Kris are referring to, but, according to the author, less memory-intensive, and possibly less disk-intensive. I’ll replicate it here, because it may be of interest. source: http://www.php.net/manual/en/function.imagecreatefromgif.php#88005 function is_ani($filename) { if(!($fh = … Read more
You need to open the input file and scan each pixel to check for your chromokey value. Something like this: // Open input and output image $src = imagecreatefromJPEG(‘input.jpg’) or die(‘Problem with source’); $out = ImageCreateTrueColor(imagesx($src),imagesy($src)) or die(‘Problem In Creating image’); // scan image pixels for ($x = 0; $x < imagesx($src); $x++) { for … Read more
As I continued my research I came up with an answer for my problem, this piece of code did it! private function properText($text){ $text = mb_convert_encoding($text, “HTML-ENTITIES”, “UTF-8”); $text = preg_replace(‘~^(&([a-zA-Z0-9]);)~’,htmlentities(‘${1}’),$text); return($text); } Now all the characters (and all the new ones I’ve seen) that troubled me are displayed correctly!
After coming across the same problem, I applied the same filter a few times, and each time to the resulting resource of the previous “imagefilter” call. I got the ‘more blurry’ effect you’re looking for. e.g.: for ($x=1; $x<=15; $x++) imagefilter($image, IMG_FILTER_GAUSSIAN_BLUR);
You could use imagecopy to crop a required part of an image. The command goes like this: imagecopy ( resource $dst_im – the image object , resource $src_im – destination image , int $dst_x – x coordinate in the destination image (use 0) , int $dst_y – y coordinate in the destination image (use 0) … Read more