CodeIgniter multi-File Upload usage example

Source: Internet
Author: User
Tags config explode file size file upload strlen trim codeigniter

  This article mainly introduces the CodeIgniter multiple file upload use examples, need friends can refer to the following

The code is as follows: <?php if (!defined ("BasePath")) {exit ("No Direct script access Allowed");}    /**   * Multi-uploa D   *    * Extends codeigniters Native Upload class to add support for multiple   * uploads.   *   * @package  codeigniter   * @subpackage Libraries   * @category uploads  /  CL Ass My_upload extends Ci_upload {       /**     * Properties    /     protected $_multi_upload_data   = Array ();     Protected $_multi_file_name_override = "";        /**     * Initialize preferences     *     * @access public &nbsp ;   * @param array     * @return void    /    Public Function Initialize ($config = arr Ay ()) {     //upload default settings.       $defaults = Array (        & nbsp; " Max_size "  => 0,   &NBsp       "Max_width"   => 0,           "Max_height"  => 0,   &nbsp ;       "Max_filename"  => 0,           "allowed_types"  => "",           "file_temp"   => "",           "file_name"   => "", &N Bsp         "Orig_name"   => "",           "File_type"   => "", &NB Sp         "file_size"   => "",           "File_ext"   => "", &nbs P         "Upload_path"  => "",           "overwrite"   => FALSE,           "Encrypt_name"  => FALSE,           "is_image"   = > FALSE,           "image_width"  => "",           Image_heigh T "&NBsp;=> ",          " Image_type " =>" ",          " image_size _str "=>" "         " error_msg "  => Array (),    ,      " Mim Es "   => Array (),          " remove_spaces " => TRUE,       & nbsp   "Xss_clean"   => FALSE,           "Temp_prefix"  => "Temp_file_",   &NB Sp       "client_name"  => ""       ( );        //set each configuration.      foreach ($defaults as $key => $val) {      if (Isset ($config [$key])) {    &N Bsp   $method = "set_{$key}";        if (method_exists ($this, $method)) {        $this-> $method ($config [$ Key]);       &NBSP} else {        $this-> $key = $config[$key];              } else {        $this-> $key = $val;      }     &NBSP/       //check if file_name was provided.      if (!empty ($this->file_name)) {     //multiple file upload.       if ( Is_array ($this->file_name)) {       //clear file name override.         $this-& Gt;_file_name_override = "";          //set multiple file name override.         $this->_multi_file_name_override = $this->file_name;      //single file upload.      } else {       //set file name override.         $this->_f Ile_name_override = $this->file_name;          //clear multiple file name override.         $this->_multi_file_name_override = ""; &nbSp    }           {       /**     * File MIME Type     *      * detects the (actual) MIME type of the uploaded file, if possible.     * The input array is expected to $_files[$field].     *      * In the case of multiple uploads, a optional second argument may being     * p Assed specifying which array element of the $_files[$field] array     * elements should be referenced (name, Typ E, Tmp_name, etc).     *     * @access protected     * @param $file array     * @param $count int &NB Sp   * @return void    /    protected function _file_mime_type ($file, $count =0) {    &N Bsp;//mutliple file?      if (Is_array ($file ["name"]) {      $tmp _name = $file ["Tmp_name"] [$count];   & nbsp   $type = $file ["type"] [$count];     &NBsp;//single file.     &NBSP} else {      $tmp _name = $file ["Tmp_name"];       $type = $file ["Type" ];     &NBSP}        //we ' ll need this to validate the MIME info string (e.g. Text/plain; char SET=US-ASCII).       $REGEXP = "/^ ([a-z-]+/[a-z0-9-.+]+) (; s.+)? $/";        /* Fileinfo extension-most reliable method.       *        * Unfortunately, prior to PHP 5.3-it's only available as a PECL extens Ion and the       * More convenient Fileinfo_mime_type flag doesn ' t exist.       */       if (function_exists ("Finfo_file")) {        $finfo = Finfo_open (Fileinfo_mime);        if (Is_resource ($finfo)) {        $mime = @finfo_file ($finfo, $tmp _name); &n Bsp       Finfo_close ($finfo);          /* accordingTo the comments section of the PHP manual page,          * It's possible this function Retu RNs A empty string          * for some files (e.g. if they don ' t exist in the magic MIME Databas E.          */          if (is_string ($mime) && Preg_match ($reg Exp, $mime, $matches)) {            $this->file_type = $matches [1];       & nbsp   return;           {               }         /a ugly hack, but Unix-type systems provide a "native" way to detect the file type,       * whic H is still more secure than depending on the value of $_files[$field] [' type '], and as it       * Ed in issue #750 (https://github.com/EllisLab/CodeIgniter/issues/750)-it ' s better       * than Mime_conte Nt_Type () as OK, hence the attempts to try calling the command line with       * three different functions.       *       * Notes:       *-the Directory_separator comparison ensures t Hat we ' re not on a Windows system       *-Many system admins would disable the exec (), shell_exec (), Pope N () and similar functions       *   Due to security concerns, hence the function_exists () checks ;     *        if (directory_separator!== "") {        $cmd = "File--bri EF--mime ". Escapeshellarg ($tmp _name)." 2>&1 ";          if (function_exists ("exec")) {       /* might look confusing, a S $mime is being populated with the "output" when set in the second parameter.          * However, we only neeed the "last line", which is the actual return value of exec (), and As SucH-it overwrites          * anything that could already is set for $mime previously. This effectively makes the second parameter a dummy          * value which us to get the return status code.          */          $mime = @exec ($cmd, $mime, $return _status);          if ($return _status = 0 && is_string ($mime) && preg_match ($regexp, $mim E, $matches)) {          $this->file_type = $matches [1];           RE Turn           {       }        }         if ((bool) @ini_get ("safe_mode") = = FALSE && function_exists ("Shell_exec")) {        $mime = @ Shell_exec ($cmd);        if (strlen ($mime) > 0) {        $mime = explode ("n", Trim ($mIME));         if (Preg_match ($regexp, $mime [(Count ($mime)-1)], $matches)) {        &NBS p; $this->file_type = $matches [1];          return;        }       &nbsp,               if (function_ Exists ("Popen")) {        $proc = @popen ($cmd, "R");        if (Is_resource ($proc)) {        $mime = @fread ($proc, the same);         @pclose ($PROC);         if ($mime!== FALSE) {          $mime = explode ("n", Trim ($mime);       &NB Sp  if (Preg_match ($regexp, $mime [(Count ($mime)-1)], $matches)) {          $this->file_ Type = $matches [1];           return;         &NBSP,         {       }       &NBsp      //fall back to the deprecated mime_content_type (), if available (still better than $_files[$field] ["t Ype "]       if (function_exists (" Mime_content_type ")) {        $this->file_type = @ Mime_content_type ($tmp _name);        //it ' s possible that Mime_content_type () returns FALSE or a empty string.        if (strlen ($this->file_type) > 0) {        return;     &NBSP ; &NBSP}      }        //if all else fails, use $_files default MIME type.       $this->file_type = $type;    }        /**     * Set multiple Upload Data     *     * @a ccess protected     * @return void    /    protected function Set_multi_upload_data () {&N Bsp     $this->_multi_upload_data[] = Array (      "file_name" &nbsp => $this->file_name,       "File_type"   => $this->file_type,       "file_p Ath "  => $this->upload_path,      " Full_path "  => $this->upload_path. $this-> file_name,       "Raw_name"   => str_replace ($this->file_ext, "", $this->file_name),       "Orig_name"   => $this->orig_name,       "Client_name"  => $this->clie Nt_name       "File_ext"   => $this->file_ext,       "file_size"   => $t His->file_size       "Is_image"   => $this->is_image (),       "Image_width" & Nbsp;=> $this->image_width,       "Image_height"  => $this->image_height,       "Image_type"  => $this->image_type,       "Image_size_str" => $this->image_size_ STR      ); &nbsp          /**     * Get multiple Upload Data     *     * @access P Ublic     * @return array    /    public Function get_multi_upload_data () {     return $this->_multi_upload_data;    }        /**     * multile File Upload     *     * @access Public     * @param string     * @return mixed    /    Public Function Do_mult I_upload ($field) {     //is $_files[$field] set? If not, no reason to continue.      if (!isset ($_files[$field)) {return false;}        //is This really a multi Uploa D?      if (!is_array ($_files[$field] ["name"]) {     //fallback to Do_upload method.   & nbsp   Return $this->do_upload ($field);      }        //is the upload path valId?      IF (! $this->validate_upload_path ()) {     //errors'll already is set by Validate_u Pload_path () So just return false       return false;     &NBSP}        //every file would have a separate entry in each of the $_files Associativ e-array elements (name, type, etc).      //loop through $_files[$field] ["name"] as representative of total number of FILES. Use count as key in      //corresponding elements of the $_files[$field] elements.      for ($i =0 $i <count ($_files[$field] ["name"]) $i + +] {     //was The file able to is Uploaded? If not, determine the reason why.       if (!is_uploaded_file ($_files[$field] ["Tmp_name"] [$i])) {       //determine Error number.         $error = (!isset ($_files[$field] ["Error"] [$i])? 4: $_files[$field] ["Error"] [$i];          //set Error.        switch ($error) {       //upload_err_ini_size         C ASE 1:           $this->set_error ("Upload_file_exceeds_limit");         break;        //upload_err_form_size         Case 2:          $ This->set_error ("Upload_file_exceeds_form_limit");         break;        //upload_err_partial         Case 3:           $th Is->set_error ("upload_file_partial");         break;        //upload_err_no_file         Case 4:           $th Is->set_error ("upload_no_file_selected");         break;        //upload_err_no_tmp_dir         Case 6:           $this->sEt_error ("Upload_no_temp_directory");         break;        //upload_err_cant_write         Case 7:           $this->set_error ("Upload_unable_to_write_file");         break;        //upload_err_extension         Case 8:          $ This->set_error ("Upload_stopped_by_extension");         break;         default:        ->set_error   $this ("upload_no_file_selected");         break;       &NBSP}          //return failed upload.        return FALSE;      }        //set current file data as class variables.       $this->file_temp = $_files[$field] ["Tmp_name"] [$i];       $this->file_size = $_files[$field["Size"] [$i];       $this->_file_mime_type ($_files[$field], $i);       $this->file_type = preg_replace ("/^" (. +?);. *$/"," 1 ", $this->file_type);       $this->file_type = Strtolower (Trim (stripslashes ($this->file_type), ' "));       $this->file_name = $this->_prep_filename ($_files[$field] ["name"] [$i]);       $this->file_ext  = $this->get_extension ($this->file_name);       $this->client_name = $this->file_name;        //is The file type allowed to is uploaded?       if (! $this->is_allowed_filetype ()) {        $this->set_error ("Upload_ Invalid_filetype ");        return FALSE;      }        //if we ' re overriding, let's now make sure the new name and type are all Owed.      //check if a filename is supplied for the current file. OtherwIse, use it ' s given name.       if (!empty ($this->_multi_file_name_override[$i]) {        $this->file_ Name = $this->_prep_filename ($this->_multi_file_name_override[$i]);          //if no extension is provided in the File_name Config item and use the uploaded one.        if (Strpos ($this->_multi_file_name_override[$i], ".") = = FALSE) {      & nbsp $this->file_name. = $this->file_ext;        //an extension was provided, lets have it!       &NBSP} else {        $this->file_ext = $this->get_extension ($this->_mu lti_file_name_override[$i]);       &NBSP}          if (! $this->is_allowed_filetype (TRUE)) {    &N Bsp   $this->set_error ("Upload_invalid_filetype");         return FALSE;       &NBSP}      }        //convert The file size to kilobytes.       if ($this->file_size > 0) {        $this->file_size = round ($this->fil e_size/1024, 2);      }        //is The file size within the allowed maximum?       if (! $this->is_allowed_filesize ()) {        $this->set_error ("Upload_ Invalid_filesize ");        return FALSE;      }        //are the image dimensions within the allowed size?      //note:this can fail if the server has an open_basdir restriction.       if (! $this->is_allowed_dimensions ()) {        $this->set_error ("Upload_ Invalid_dimensions ");        return FALSE;      }        //sanitize the file name for security.       $this->file_name = $this->clean_file_namE ($this->file_name);        //truncate The file name if it ' s too long       if ($this->max_filename > 0 {        $this->file_name = $this->limit_filename_length ($this->file_name, $this-> Max_filename);      }        //remove spaces in the name       if ($this->rem Ove_spaces = = TRUE) {        $this->file_name = preg_replace ("/s+/", "_", $this->file_name); &nb Sp    }         * Validate the file name        * This function appends a n number onto the end of        * the ' file if one with the same name already exists.        * If it returns false there was a problem.        */        $this->orig_name = $this->file_name;        if ($this->overwrite = = FALSE) {    &nbsP   $this->file_name = $this->set_filename ($this->upload_path, $this->file_name);         if ($this->file_name = False) {         return FALSE;   &nbs P    }                /* Run the file through the XSS hacking filter &N Bsp      * This helps prevent malicious code from being        * embedded within a file.  scripts can easily        * is disguised as images or other file types.        */       if ($this->xss_clean) {        if ($this ;d O_xss_clean () = FALSE) {          $this->set_error ("Upload_unable_to_write_file");          return FALSE;        }       &nbsp,         * Move the file to the final Desti Nation     &NBSp  * to deal with different server configurations        * We'll attempt to use copy ().  if that fails        * We'll use Move_uploaded_file ().  one of the two should        * reliably work in most environments        */        IF (! @copy ($this->file_temp, $this->upload_path. $this->file_name)) {        if (! @move_uploaded_file ($this->file_temp, $this->upload_path. $this->file_name)) {          $this->set_error ("Upload_destination_error");          return FALSE;        }       &nbsp,         * Set the finalized image Dimensio NS        * This sets the image width/height (assuming the        * file is an IM Age).  we Use this information        * in the "Data" FUnction.        */        $this->set_image_properties ($this->upload_path. $this- >file_name);        //set current file data to Multi_file_upload_data.       $this->set_multi_upload_data ();     &NBSP}        //return all file upload data.      return TRUE;   &NBSP}  }    
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