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<?phpdefined（"BASEPATH"） OR exit（"No direct script access allowed"）; class Index extends MY_Controller {function __construct（）{parent::__construct（）;$this->load->helper（array（"form", "url"））;} /** * 首页 */public function index（） {$this->load->view（"upload_form", array（"error" => " " ））;}public function do_upload（）{$config["upload_path"] = "./data/uploads/";$config["allowed_types"]= "gif|jpg|png";$config["max_size"] = 100;$config["max_width"]= 1024;$config["max_height"]= 768; $this->load->library（"upload", $config）; if （ ！ $this->upload->do_upload（"userfile"））{$error = array（"error" => $this->upload->display_errors（））; $this->load->view（"upload_form", $error）;}else{$data = array（"upload_data" => $this->upload->data（））; $this->load->library（"image_lib"）;list（$width, $height） = getimagesize（$data["upload_data"]["full_path"]）;$config["image_library"] = "gd2";$config["source_image"] = $data["upload_data"]["full_path"];$config["maintain_ratio"] = TRUE;if（$width >= $height）{$config["master_dim"] = "height";}else{$config["master_dim"] = "width";}$config["width"] = 180;$config["height"] = 180;$this->image_lib->initialize（$config）;$this->image_lib->resize（）; $config["maintain_ratio"] = FALSE;if（$width >= $height）{$config["x_axis"] = floor（（$width * 180 / $height - 180）/2）;}else{$config["y_axis"] = floor（（$height * 180 / $width - 180）/2）;}$this->image_lib->initialize（$config）;$this->image_lib->crop（）; $this->load->view（"upload_success", $data）;}}}