function createFullImage($origImage, $origWidth, $origHeight, $file) { global $fullWidthMax, $fullHeightMax; $scale = min($fullWidthMax / $origWidth, $fullHeightMax / $origHeight, 1); $newWidth = $origWidth * $scale; $newHeight = $origHeight * $scale; imageToFile($origImage, $origWidth, $origHeight, $newWidth, $newHeight, $file); logEvent("create-full-image", $origImage, $file, $scale); }
function twittercard_load($content) { global $template, $picture, $page; global $twitter_site; // get image url $query = sprintf(' select path, name, comment FROM ' . IMAGES_TABLE . ' WHERE id = %s ;', $page['image_id']); $result = pwg_query($query); $row = pwg_db_fetch_assoc($result); $url = substr($row['path'], 2); $title = str_replace('"', '\\"', $row['name']); $description = str_replace('"', '\\"', $row['comment']); // Check if folder exists $thumbFolder = PHPWG_PLUGINS_PATH . basename(dirname(dirname(__FILE__))) . '/thumbs/' . dirname($url); if (!file_exists($thumbFolder)) { mkdir($thumbFolder, 0777, true); } $extension_pos = strrpos($url, '.'); $thumb = $thumbFolder . "/" . basename(substr($url, 0, $extension_pos)) . '_tw_thumb' . substr($url, $extension_pos); $thumbLocal = PHPWG_PLUGINS_PATH . basename(dirname(dirname(__FILE__))) . '/thumbs/' . substr($url, 0, $extension_pos) . '_tw_thumb' . substr($url, $extension_pos); // Check if a thumb already exists, otherwise create a thumb if (!file_exists($thumb)) { /** * Create a thumbnail image from $inputFileName no taller or wider than * $maxSize. Returns the new image resource or false on error. * Author: mthorn.net */ function thumbnail($inputFileName, $maxSize = 100) { $info = getimagesize($inputFileName); $type = isset($info['type']) ? $info['type'] : $info[2]; // Check support of file type if (!(imagetypes() & $type)) { // Server does not support file type return false; } $width = isset($info['width']) ? $info['width'] : $info[0]; $height = isset($info['height']) ? $info['height'] : $info[1]; // Calculate aspect ratio $wRatio = $maxSize / $width; $hRatio = $maxSize / $height; // Using imagecreatefromstring will automatically detect the file type $sourceImage = imagecreatefromstring(file_get_contents($inputFileName)); // Calculate a proportional width and height no larger than the max size. if ($width <= $maxSize && $height <= $maxSize) { // Input is smaller than thumbnail, do nothing return $sourceImage; } elseif ($wRatio * $height < $maxSize) { // Image is horizontal $tHeight = ceil($wRatio * $height); $tWidth = $maxSize; } else { // Image is vertical $tWidth = ceil($hRatio * $width); $tHeight = $maxSize; } $thumb = imagecreatetruecolor($tWidth, $tHeight); if ($sourceImage === false) { // Could not load image return false; } // Copy resampled makes a smooth thumbnail imagecopyresampled($thumb, $sourceImage, 0, 0, 0, 0, $tWidth, $tHeight, $width, $height); imagedestroy($sourceImage); return $thumb; } /** * Save the image to a file. Type is determined from the extension. * $quality is only used for jpegs. * Author: mthorn.net */ function imageToFile($im, $fileName, $quality = 80) { if (!$im || file_exists($fileName)) { return false; } $ext = strtolower(substr($fileName, strrpos($fileName, '.'))); switch ($ext) { case '.gif': imagegif($im, $fileName); break; case '.jpg': case '.jpeg': imagejpeg($im, $fileName, $quality); break; case '.png': imagepng($im, $fileName); break; case '.bmp': imagewbmp($im, $fileName); break; default: return false; } return true; } $im = thumbnail($url, 435); imageToFile($im, $thumb); } $template->append('head_elements', ' <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:title" content="' . $title . '"> <meta name="twitter:description" content="' . $description . '"> <meta name="twitter:site" content="' . $twitter_site . '"> <meta name="twitter:image" content="http://' . $_SERVER['HTTP_HOST'] . substr($_SERVER['REQUEST_URI'], 0, strrpos(substr($_SERVER['REQUEST_URI'], 0, strrpos($_SERVER['REQUEST_URI'], '?')), '/')) . '/' . $thumbLocal . '">'); }
$sImage = $uploaded; $info = pathinfo($sImage); $ext = $info['extension']; // is this a gif or is it a transparent png -- ACP-518 if ($ext == "gif" || ord(@file_get_contents($sImage, NULL, NULL, 25, 1)) == 6) { $gd = FALSE; } // try to generate thumb if gd is available $_SESSION['site_registration']['valid_entries'] = TRUE; if ($gd) { $im = thumbnail($sImage, 100); $info = getimagesize($sImage); $mime = image_type_to_mime_type($info[2]); header("Content-Type: {$mime}"); header("Content-Length: " . filesize($sImage)); imageToFile($im, $sImage . '-temp-thumbnail.' . $ext); echo file_get_contents($sImage . '-temp-thumbnail.' . $ext); imagedestroy($im); } else { $info = getimagesize($uploaded); $mime = image_type_to_mime_type($info[2]); header("Content-Type: {$mime}"); header("Content-Length: " . filesize($sImage)); echo file_get_contents($sImage); } break; // ajax check for coppa options // ajax check for coppa options case 'check_coppa': $arr = array(); $arr['use_coppa'] = $vbulletin->options['usecoppa'];