CI frame file Upload class and image processing class usage Analysis _php example

This example describes the CI framework file upload class and image processing class usage. Share to everyone for your reference, specific as follows:

List page banner picture public function Edit_list_page_banner ($category _id= "") {$category _id= empty ($category _id)? $_post["
  category_id "]: $category _id; Upload picture if (isset ($_post["key")) && $_post["key"] = = "Upload") {/* 1.set_upload_path * * $config [' Uploa D_path ']= './upload/source/'. Date ("y/m/d");//File Upload directory if (!file_exists ("./upload/source/". Date ("y/m/d")) {mkdir ("./ upload/source/". Date (" y/m/d "), 0777,true)//original path} if (!file_exists ("./upload/big_thumb/". Date (" y/m/d ")) {mkdir (" ./upload/big_thumb/". Date (" y/m/d "), 0777,true);//large Thumbnail path} if (!file_exists ("./upload/small_thumb/". Date (" y/m/d ")) {mkdir ("./upload/small_thumb/". Date ("y/m/d"), 0777,true);//small thumbnail path} $config [' Allowed_types ']= ' gif|jpg|png|txt ';
   /file type $config [' max_size ']= "20000";//maximum upload size $this->load->library ("Upload", $config); if ($this->upload->do_upload (' userfile '))//The form name= "UserFile" {//uploaded successfully, generate two thumbnails $data = $this->UPLOAD-&G T;data ()//Returns the information of the uploaded picture $this-≫load->library ("Image_lib"); Load the image processing class library//The first way: Large thumbnail configuration Parameters/* $config _big_thumb[' image_library '] = ' gd2 '; GD2 gallery $config _big_thumb[' source_image '] = $data [' Full_path '];//original artwork $config _big_thumb[' new_image '] = "./upload/big_t humb/". Date (" y/m/d ")." /". $data [' file_name '];//large thumbnail $config _big_thumb[' create_thumb '] = true;//whether to create thumbnails $config _big_thumb[' maintain_ratio '
    ] = true; $config _big_thumb[' width '] = 300;//thumbnail width $config _big_thumb[' height ' = 300;//thumbnail height $config _big_thumb[' Thumb_marke
     R ']= "_300_300"//thumbnail name plus "_300_300", can represent a 300*300 thumbnail//second: Large thumbnail configuration Parameters/* $config _big_thumb=array ( ' Image_library ' => ' gd2 ',//gd2 gallery ' source_image ' => $data [' Full_path '],//' The original image ' New_image ' => './upload/b ig_thumb/". Date (" y/m/d ")."  /". $data [' file_name '],//large thumbnail ' create_thumb ' => true,//whether to create thumbnails ' Maintain_ratio ' => true, ' width ' => 300,//thumbnail width ' height ' => 300,//thumbnail heights ' thumb_marker ' => ' _300_300 '//abbreviationAfter the figure name plus "_300_300", can represent is a 300*300 thumbnail);
    //A third way: To put part of the configuration information in the config.php file $config _big_thumb= $this->config->item ("Config_big_thumb");
    $config _big_thumb[' source_image ']= $data [' Full_path ']; $config _big_thumb[' new_image ']= './upload/big_thumb/". Date (" y/m/d ")."
    /". $data [' file_name ']; Configuration parameters for small thumbnails/* $config _small_thumb[' image_library '] = ' gd2 ';//gd2 gallery $config _small_thumb[' source_image '] = $dat a[' Full_path '];//artwork $config _small_thumb[' new_image '] = "./upload/small_thumb/". Date ("y/m/d"). " /". $data [' file_name '];//large thumbnail $config _small_thumb[' create_thumb '] = true;//whether to create thumbnails $config _small_thumb[' Maintain_ra
    Tio '] = true; $config _small_thumb[' width '] = 100;//thumbnail width $config _small_thumb[' height ' = 100;//thumbnail height $config _small_thumb[' thumb _marker ']= "_100_100"//thumbnail name plus "_100_100", can represent a 100*100 thumbnail///small thumbnail configuration parameters $config _small_thumb=array (' Image_library ' => ' gd2 ',//gd2 gallery ' source_image ' => $data [' Full_path '],//originalFigure ' New_image ' => "./upload/small_thumb/". Date ("y/m/d"). "  /". $data [' file_name '],//large thumbnail ' create_thumb ' => true,//whether to create thumbnails ' Maintain_ratio ' => true, ' width ' =>
    The 100,//thumbnail width ' height ' => 100,//thumbnail height ' thumb_marker ' => ' _100_100 '//thumbnail name plus ' _300_300 ' can represent a 300*300 thumbnail
    );
    $this->load->library ("Image_lib", $config _thumb);
    $this->image_lib->initialize ($config _big_thumb);
    $this->image_lib->resize ()///generate big thumbnail $this->image_lib->initialize ($config _small_thumb);
     $this->image_lib->resize ()///Generate small thumbnail/insert database $data _array = Array (' category_id ' => $category _id, ' Pic_url ' => './upload/source/'. Date ("y/m/d"). " /". $data [' file_name '], ' addtime ' => time (), ' Is_stop ' => 1, ' sort ' =>0, ' gender ' => $_post[
    "Gender"], ' Link_url ' =>$_post["Link_url"], ' user_id ' => intval ($this->cur_user [' user_id ']); $this->category_model->add_category_banner ($data _array);
  }} $con _arr[] = "category_id= ' {$category _id} '";
  if ($gender = = ") {$gender = 0;
  } $con _arr[] = "gender= ' {$gender} '";
  $condition = Implode (' and ', $con _arr);
  $banner _list = $this->category_model->get_banner_all ($condition);
  $this->tp->assign (' banner_list ', $banner _list);
  $this->tp->assign (' Base_url ', Base_url ());
  $this->tp->assign (' Gender ', $gender);
  $this->tp->assign (' category_id ', $category _id);
$this->tp->display ("category/edit_list_page_banner.php");

 }

config.php configuration items in the file for thumbnails:

Configuration parameters for large thumbnails
$config _big_thumb=array (
 ' image_library ' => ' gd2 ',//gd2 gallery
 ' create_thumb ' => true,// Create thumbnail
 ' maintain_ratio ' => true,
 ' width ' => 300,//thumbnail width
 ' height ' => 300,//thumbnail height
 ' thumb_ Marker ' => "_300_300"//thumbnail name plus "_300_300" can represent a 300*300 thumbnail
);

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