Example of implementation of TP upload image and generate thumbnail function

This paper describes the thinkphp implementation of uploading images and generating thumbnails. Share to everyone for your reference, as follows:

Make a note of how to upload a picture in thinkphp (Upload) and generate a thumbnail image (image).

enctype= "Multipart/form-data" must be added to the HTML page form

<form action= "Self" method= "post" enctype= "Multipart/form-data" > <table width= "100%" class= "cont" >   <tr>   <td> photos:</td>   <td width= "20%" ><input type= "file" name= "pic" id= "pic"/> </td>   <td colspan= "3" ><input class= "btn" type= "Submit" value= "Submit"/></td>   <TD > </td>    </tr>  </table></form>

PHP code

<?phpnamespace admin\controller;use org\util\date;use think\controller;use think\image;use Think\Upload;class    Usercontroller extends Controller {public function Add () {$user = M (' user ');      if (!empty ($_post)) {$user = $user->create (); Determine if the incoming picture has a problem if ($_files[' pic ' [' error '] = = 0) {$config = array (' rootpath ' = './application/pu        blic/image/'//Set picture save path);        New an upload model $upload = new Upload ($config);        Upload image $pic = $upload->uploadone ($_files[' pic ');        Save the picture to the database $user [' big_pic '] = $pic [' Savepath ']. $pic [' Savename '];        Generate thumbnail $img = new Image ();        The path to the large picture $big _img = $upload->rootpath. $user [' big_pic '];        Open large picture $img->open ($big _img);        Set the picture size $img->thumb (200,300); Set absolute path $small _img = $upload->rootpath. $pic [' Savepath ']. '        Small_ '. $pic [' Savename '];        Save $img->save ($small _img);      Save picture Name to database  $user [' img '] = $pic [' Savepath ']. '      Small_ '. $pic [' Savename '];      } $user [' create_date '] = Date ("y-m-d h:i:s");      $msg = "Add Failed";      if (M ("User")->add ($user)) $msg = "Add Success";    $this->redirect (show_list,null,3, $msg);  } $this->display (); }