CI Framework file Upload class and image processing class usage analysis, ci file upload _php tutorial

CI Framework file Upload class and image processing class usage analysis, CI file upload

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

List page banner picture public function Edit_list_page_banner ($category _id= "") {$category _id= empty ($category _id)? $_post["  category_id "]: $category _id; Upload image if (isset ($_post["key"]) && $_post["key"] = = "Upload") {/* 1.set_upload_path */$config [' Upload_pat H ']= "./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);//The 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 '))///form Name= "UserFile" {//upload succeeded, generate two thumbnails $data = $this->upload-> Data ();//returns information about the uploaded image $this->load->library ("image_lib ");//load Image processing library//First way: Configuration parameters for large thumbnails/* $config _big_thumb[' image_library '] = ' gd2 ';//gd2 gallery $config _big_thumb[' s Ource_image '] = $data [' Full_path '];//original $config _big_thumb[' new_image '] = "./upload/big_thumb/". 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_marker ' ]= "_300_300";//thumbnail name plus "_300_300", can represent a 300*300 thumbnail *///Second: Configuration parameters for large thumbnails/* $config _big_thumb=array (' Imag E_library ' + ' gd2 ',//gd2 gallery ' source_image ' and $data [' Full_path '],//original ' new_image ' and ' = './upload/big_thumb/ ". Date (" y/m/d ")." /". $data [' file_name '],//large thumbnail ' create_thumb ' = true,//create thumbnail ' maintain_ratio ' = True, ' width ' = 30    0,//thumbnail width ' height ' = 300,//thumbnail height ' thumb_marker ' + ' _300_300 '//thumbnail name plus ' _300_300 ', which can represent a 300*300 thumbnail); */    The third way: the partial configuration information is placed 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 '] = $data [' Full_path '];//original $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_    Ratio '] = true; $config _small_thumb[' width ' = 100;//thumbnail width $config _small_thumb[' height ') = 100;//thumbnail height $config _small_thumb[' thumb_m Arker ']= "_100_100";//thumbnail name after adding "_100_100", can represent a 100*100 thumbnail *////small thumbnail configuration parameters $config _small_thumb=array (' Image_ Library ' + ' GD2 ',//gd2 gallery ' source_image ' and $data [' Full_path '],//original ' new_image ' = './upload/small_thumb/ ". Date (" y/m/d ")." /". $data[' file_name '],//large thumbnail ' create_thumb ' + true,//whether to create thumbnail ' maintain_ratio ' = True, ' width ' = + 100,//thumbnail    Figure width ' height ' = 100,//thumbnail height ' thumb_marker ' = ' _100_100 '//thumbnail name plus ' _300_300 ', which 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 ' = $_post[' Gen    Der "], ' Link_url ' =>$_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");}

Configuration items for thumbnails in the config.php file:

Large thumbnail configuration parameters $config_big_thumb=array (' image_library ' = ' gd2 ',//gd2 gallery ' create_thumb ' + true,//whether to create thumbnails ' maintain _ratio ' = ' = True, ' width ' = 300,//thumbnail width ' height ' + 300,//thumbnail height ' thumb_marker ' + ' _300_300 '//thumbnail name added "_300_ 300 ", can be represented as a 300*300 thumbnail);

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