function resize_pic($img, $x, $y)
{
$img = urldecode($img);
if ($img && strlen($img) > 5) {
$final_ext;
$img_old;
if (preg_match("/\\.jpg|\\.jpeg/i", $img)) {
$img_old = imagecreatefromjpeg($img);
$final_ext = ".jpg";
$t = 1;
} else {
if (stristr($img, ".gif")) {
$img_old = imagecreatefromgif($img);
$final_ext = ".gif";
$t = 2;
} else {
if (stristr($img, ".png")) {
$img_old = imagecreatefrompng($img);
$final_ext = ".png";
$t = 3;
} else {
$img_old = false;
$t = false;
}
}
}
if ($img_old && $t) {
list($xx, $yy) = getimagesize($img);
$newx;
$newy;
if ($xx < $x || $yy < $y) {
header("location: {$img}");
exit;
}
if ($xx < $yy) {
$newx = $x;
$newy = intval($yy / $xx * $x);
} else {
$newy = $y;
$newx = intval($xx / $yy * $y);
}
try {
$new_img = imagecreatetruecolor($newx, $newy);
if ($final_ext == ".gif" || $final_ext == ".png") {
imagecolortransparent($new_img, imagecolorallocatealpha($new_img, 0, 0, 0, 127));
imagealphablending($new_img, false);
imagesavealpha($new_img, true);
}
if (!$new_img) {
}
//throw new Exception("could not save");
imagecopyresampled($new_img, $img_old, 0, 0, 0, 0, $newx, $newy, $xx, $yy);
} catch (Exception $err) {
echo $err->getMessage();
return false;
}
switch ($t) {
case 1:
headerCache();
header("Content-type:image/jpg");
imagejpeg($new_img);
break;
case 2:
headerCache();
header("Content-type:image/gif");
imagegif($new_img);
break;
case 3:
headerCache();
header("Content-type:image/png");
imagepng($new_img);
break;
default:
header("location: {$img}");
break;
}
exit;
} else {
header("location: {$img}");
}
} else {
header("location: {$img}");
}
}
protected function _newFileData($list)
{
if ($list && is_array($list)) {
//缓存图片开始
headerCache();
//缓存图片结束
foreach ($list as $key => $value) {
$id = $value['id'];
//缓存上传的图片(缩放后的图片)
$cache_dir = '/temp/photo/' . $value['uid'] . '/' . $value['type_id'] . '/' . $value['dir_id'] . '/';
$file_path = $cache_dir . md5($value['upload_path']) . '.' . $value['file_type'];
if (!is_file(ROOT_PATH . $file_path)) {
PhotoM::cachePhoto($cache_dir, $value['upload_path'], $value['file_type']);
}
$list[$key]['upload_path'] = $file_path;
$list[$key]['del_file_url'] = url("myweb", "photo::del", "dfile_" . $value['dir_id'] . "_" . $id);
}
}
return $list;
}
