首页 / 网页编程 / PHP / php基于CodeIgniter实现图片上传、剪切功能

<?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）;}}}