为什么无法调整图像大小以获取缩略图

Question

我有一个表单，用户可以上传他的图像​​，单击“提交”后，我尝试调整图像的大小并制作同一图像的另一个副本以获取缩略图，调整第一张图像的大小非常有用，但是当它用于缩略图时它有时甚至有时没有，我不知道这是与hostgator共享服务器有关的问题还是其逻辑代码内部的问题，这是我的代码：

    if($extens == 'JPEG' || $extens == 'JPG' || $extens == 'jpg' ) 
                {


                                               list($width, $height) = @getimagesize($path);


                                                 $newwidth =  $width > $newwidth ? $newwidth : $width;
                                                 $newheight = $height > $newheight ? $newheight : $height;

                          $src = @imagecreatefromjpeg($path);



                                                if($width > $height)
                                                {

                                                $var = $width / $newwidth;
                                                $newwidth = $newwidth;
                                                $newheight = $height / $var;

                                                }elseif($width < $height)
                                                {

                                                $var = $height / $newheight;
                                                $newheight = $newheight;
                                                $newwidth = $width / $var;

                                                }

                                            //resizing first image
                                              $temp12 = imagecreatetruecolor($newwidth, $newheight);
                                              $black2 = imagecolorclosestalpha($temp12,250,249,249,85);
                                              imagecopyresampled($temp12, $src, 0,0,0,0, $newwidth, $newheight, $width, $height);
                                              Imagettftext($temp12, 16, 0, $start_x, $start_y, $black2, $font , "mywebsite.com");
                                               imagejpeg($temp12, $path,95);


                                   //resizing for a thumbnail
                                               $temp2 = imagecreatetruecolor($newwidth1, $newheight2);
                                               imagecopyresampled($temp2, $src, 0,0,0,0, $newwidth1, $newheight2, $width, $height);
                                               Imagettftext($temp2, 8, 0, $start_x2, $start_y2, $black2, $font , "mywebsite.com");
                                               imagejpeg($temp2,$pathFile ,95);
                                               imagedestroy($temp2);

                                               imagedestroy($temp12);
                                               imagedestroy($src);

                //there is elseif of png same logic except imagejpeg and
   // }elseif($extens == 'png' || $extens == 'PNG'){