apache - Php GD Library PNG display issue -



apache - Php GD Library PNG display issue -

i've got gd library upload script processing , resizes images. after uploading pngs getting rendering different image, stock-looking image, on browser side, yet when opened on disk correct. i've re-saved affected pngs via photoshop , uploaded directly, fixes display issue, when upload image via script display issue returns, script encoding seems cause issue browser display, why know not.

hosting environment hetzner server. upload sample:

//resize images protected function resize($img, $w, $h, $newfilename) { //check if gd extension loaded if (!extension_loaded('gd') && !extension_loaded('gd2')) { trigger_error("gd not loaded", e_user_warning); homecoming false; } //get image size info $imginfo = getimagesize($img); switch ($imginfo[2]) { case 1: $im = imagecreatefromgif($img); break; case 2: $im = imagecreatefromjpeg($img); break; case 3: $im = imagecreatefrompng($img); break; default: trigger_error('unsupported filetype!', e_user_warning); break; } //if image dimension smaller, not resize if ($imginfo[0] <= $w && $imginfo[1] <= $h) { $nheight = $imginfo[1]; $nwidth = $imginfo[0]; } else{ // yeah, resize it, maintain proportional if ($w/$imginfo[0] > $h/$imginfo[1]) { $nwidth = $imginfo[0]*($h/$imginfo[1]); $nheight = $h; } else{ $nwidth = $w; $nheight = $imginfo[1]*($w/$imginfo[0]); } } $nwidth = round($nwidth); $nheight = round($nheight); $newimg = imagecreatetruecolor($nwidth, $nheight); /* check if image png or gif, set if transparent*/ if(($imginfo[2] == 1) or ($imginfo[2]==3)){ imagealphablending($newimg, false); imagesavealpha($newimg,true); $transparent = imagecolorallocatealpha($newimg, 255, 255, 255, 127); imagefilledrectangle($newimg, 0, 0, $nwidth, $nheight, $transparent); } imagecopyresampled($newimg, $im, 0, 0, 0, 0, $nwidth, $nheight, $imginfo[0], $imginfo[1]); //generate file, , rename $newfilename switch ($imginfo[2]) { case 1: imagegif($newimg,$newfilename); break; case 2: imagejpeg($newimg,$newfilename,100); break; case 3: imagepng($newimg,$newfilename,0); break; default: trigger_error('failed resize image!', e_user_warning); break; } homecoming $newfilename; }

can give me insight this. provide more info if necessary. ty

edit: browser display disk display

i have no clue image coming from, it's on multiple uploads, when browsing total path image on browser same image comes it's not pathing issue.

php apache browser png gd

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