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Create Image thumb while uploading

/ Published in: PHP
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  1. if(!empty($_FILES)){
  2.                         $img = explode('.', $_FILES['thumb_img']['name']);
  3.                         $img_path = $img_dir .$img[0].time().'.'.$img[1];
  4.                         $img_thumb = $img_dir .$img[0].time().'_thumb.'.$img[1];
  5.                         $extension = strtolower($img[1]);
  6.                         if(in_array($extension , array('jpg','jpeg', 'gif', 'png', 'bmp'))){
  7.  
  8.                                 //---------- To create thumbnail of image---------------
  9.                                 if($extension=="jpg" || $extension=="jpeg" ){
  10.                                         $src = imagecreatefromjpeg($_FILES['thumb_img']['tmp_name']);
  11.                                 }
  12.                                 else if($extension=="png"){
  13.                                         $src = imagecreatefrompng($_FILES['thumb_img']['tmp_name']);
  14.                                 }
  15.                                 else{
  16.                                         $src = imagecreatefromgif($_FILES['thumb_img']['tmp_name']);
  17.                                 }
  18.                                 list($width,$height)=getimagesize($_FILES['thumb_img']['tmp_name']);
  19.                                 $newwidth=151;
  20.                                 $newheight=151;//($height/$width)*$newwidth;
  21.                                 $tmp=imagecreatetruecolor($newwidth,$newheight);
  22.                                 imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight, $width,$height);
  23.                                 imagejpeg($tmp,$img_thumb,100);
  24.                                 //--------------    Ends   -----------
  25.  
  26.                                 move_uploaded_file($_FILES['thumb_img']['tmp_name'], $img_path);
  27.                                 $blog_thumb = get_site_option('rt_blog_thumb');
  28.                                 $blog_thumb[$blog_id] = basename($img_thumb);
  29.                                 update_site_option('rt_blog_thumb', $blog_thumb);
  30.                         }
  31.                         else echo 'Invalid file';
  32.                 }

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