Developing Smarty PHP Knowledge accumulation

 
  
 <title>Insert Title here</title>
 Uploading files。 The validated file is saved to the specified directory after validation. * Can returnUploading FilesUseful information for use by other programs.  (such as file name, type, size, save path) */class uploadfile {protected $user _post_file = Array ();    User uploaded files protected $save _file_path; Store usersUploading FilesThe path of protected $max _file_size;     Maximum file size protected $last _error;  Record the last error message//default allows users to upload file types protected $allow _type = array (' gif ', ' jpg ', ' png ', ' zip ', ' rar ', ' txt ', ' Doc ', ' pdf ', ' docx ');  protected $final _file_path; The final saved file name protected $save _info = Array ();  Returns a set of useful information that is used to prompt the user. /** * Constructor */function __construct ($file, $path, $size = 2097152, $type = ") {$this->user_post_file = $file; if (!is_d IR ($path)) {//storage path file does not exist to create mkdir ($path);chmod($path, 0777);}  $this->save_file_path = $path; $this->max_file_size = $size;  If the user does not fill in the file size, the default is 2m.if ($type! = ") $this->allow_type = $type;} /** * Storage UsersUploading Files, the verification of legality passed, stored to the specified location.   */function upload () {for ($i = 0; $i < count ($this->user_post_file[' name '); $i + +) {//If the current file upload function, perform the next step.    if ($this->user_post_file[' error '] [$i] = = 0) {//Take the current file name, temporary file name, size, extension, which will be used later.    $name = $this->user_post_file[' name ' [$i];    $tmpname = $this->user_post_file[' tmp_name ' [$i];    $size = $this->user_post_file[' size ' [$i];    $mime _type = $this->user_post_file[' type ' [$i];    $type = $this->getfileext ($this->user_post_file[' name '] [$i]); Detects the currentUploading FilesWhether the size is legal. if (! $this->checksize ($size)) {$this->last_error = "The file size is too big.     File name is: ". $name;     $this->halt ($this->last_error);    Continue }//Detect currentUploading FilesThe extension is legal. if (! $this->checktype ($type)) {$this->last_error = "unallowable file type:.". $type. "     File name is: ". $name;     $this->halt ($this->last_error);    Continue }//Detect currentUploading Filesis not submitted illegally. if (!is_uploaded_file ($tmpname)) {$this->last_error = "Invalid Post file method.     File name is: ". $name;     $this->halt ($this->last_error);    Continue    }//After moving the file, rename the file with. $basename = $this->getbasename ($name, ".".    $type);    To prevent garbled file names $basename = Iconv ("UTF-8", "gb2312", $basename); The file name after the move $saveas = $basename. Time (). ".".    $type; Save the new file name to the specified directory, format: Store path + file name + time + extension $this->final_file_path = $this->save_file_path. "    /". $saveas; if (!move_uploaded_file ($tmpname, $this->final_file_path)) {$this->last_error = $this->user_post_file['     Error '] [$i];     $this->halt ($this->last_error);    Continue    }//stores information about the current file for other programs to call.                             $this->save_info[] = Array ("name" = = $name, "type" = = $type, "mime_type" = = $mime _type, "Size" = $size, "saveas" = $saveas, "path" = $this->final_file   _path); }} return count ($this->savE_info);  Returns the number of files successfully uploaded}/** * Return some useful information for use elsewhere.  */function Getsaveinfo () {return $this->save_info;}  /** * Detect if user submitted file size is valid */function checksize ($size) {if ($size > $this->max_file_size) {return false;  } else {return true; }}/** * Detects whether a user-submitted file type is valid */function Checktype ($extension) {foreach ($this->allow_type as $type) {if (strcasecm  P ($extension, $type) = = 0) return true; } return false; }/** * Display error message */function halt ($msg) {printf (" %s
\ n ", $msg);  }/** * Fetch file extension */function Getfileext ($filename) {$stuff = PathInfo ($filename); return $stuff [' extension '];  }/** * takes the given file file name, not including the extension.  */function Getbasename ($filename, $type) {$basename = basename ($filename, $type); return $basename; }} if (!empty ($_post[' submit ')) {$upload = new UploadFile ($_files[' files '], './tmp ');//upload user file, return int value, the number of files successfully uploaded. $num = $upload->upload (); if ($num! = 0) {echo "Upload succeeded
"; echo $num. " File upload Success "; } else {echo ' upload failed
"; }}? >

The above describes the development of smarty PHP knowledge accumulation, including the uploading of files, chmod aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

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