This article mainly describes the CodeIgniter multi-file Upload use example, the need for friends can refer to the following
The code is as follows: 0, "max_width" = 0, "max_height" 0, "Max_filename" + 0, "allowed_types" and "", "File_temp" and "", "fi Le_name "+" "," orig_name "=" "," File_type "and" "," File_size "and" "," File_ext "and" "," Upload_path "=& Gt "", "overwrite" = False, "encrypt_name" = False, "is_image" = False, "image_width" = "", "Image_height" =& Gt "", "Image_type" and "" "," image_size_str "=" "," error_msg "= = Array ()," mimes "= = Array (), Remove_spaces =& Gt TRUE, "xss_clean" = FALSE, "temp_prefix" = "Temp_file_", "Client_name" and "" "; Set each configuration. foreach ($defaults as $key = + $val) {if (Isset ($config [$key])) {$method = "set_{$key}"; if (Method_exists ($this, $method ) {$this $method ($config [$key]);} else {$this, $key = $config [$key];}} else {$this-$key = $val;}} Check if file_name was provided. if (!empty ($this->file_name)) {//multiple file upload. if (Is_array ($this->file_name)) {//clear file name OVerride. $this->_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->_file_name_override = $this->file_name;//clear multiple file name Overrid E. $this->_multi_file_name_override = "";}} /** * File MIME type * * detects the (actual) MIME type of the uploaded file, if possible. * The input array is expected to be $_files[$field]. * In the case of multiple uploads, a optional second argument could be * passed specifying which array element of the $_fi les[$field] Array * elements should be referenced (name, type, tmp_name, etc). * * @access protected * @param $file array * @param $count int * @return void */protected function _file_mime_type ($file, $count =0) {//mutliple file "if" Is_array ($file ["name"]) {$tmp _name = $file ["Tmp_name"] [$count]; $type = $file ["Type"][$ Count]; Single file. } else {$tmp _name = $file ["Tmp_name"]; $type = $file ["tYpe "]; }//we ' ll need this to validate the MIME info string (e.g. text/plain; charset=us-ascii). $regexp = "/^ ([a-z\-]+\/[a-z0-9\-\.\+]+) (; \s.+) $/"; /* Fileinfo extension-most Reliable method. * * Unfortunately, prior to PHP 5.3-it's only available as a PECL extension and the * more convenient fileinfo_mime_type Flag doesn ' t exist. */if (function_exists ("Finfo_file")) {$finfo = Finfo_open (Fileinfo_mime), if (Is_resource ($finfo)) {$mime = @finfo_file ($finfo, $tmp _name); Finfo_close ($finfo); /* According to the comments section of the PHP manual page, * It's possible that this function returns an empty string * For some files (e.g. if they don ' t exist in the Magic MIME database). */if (is_string ($mime) && preg_match ($regexp, $mime, $matches)) {$this->file_type = $matches [1]; return;}} }/* This was an ugly hack, but Unix-type systems provide a "native" the "from" to detect the file type, * which was still more sec Ure than depending on the value of $_files[$field [' type '], and as It * was reported in issue #750 (https://github.com/EllisLab/CodeIgniter/issues/750)-it ' s better * than mime_content_ty PE () as well, hence the attempts-try calling the command line with * three different functions. * * Notes: *-The Directory_separator comparison ensures that we ' re not on a Windows system *-many system admins would Disable the exec (), shell_exec (), Popen () and similar functions * due to security concerns, hence the function_exists () ch Ecks */if (directory_separator!== "\ \") {$cmd = "file--brief--mime". Escapeshellarg ($tmp _name). " 2>&1 "; if (function_exists ("exec")) {/* This might look confusing, as $mime are being populated with all of 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 $mime previously. This effectively makes the second parameter a dummy * value, which are only put to allow us to get the RetuRN status code. */$mime = @exec ($cmd, $mime, $return _status); if ($return _status = = = 0 && is_string ($mime) && preg_match ($regexp, $mime, $matches)) {$this->file_ Type = $matches [1]; Return }}} if ((bool) @ini_get ("safe_mode") = = = FALSE && function_exists ("Shell_exec")) {$mime = @shell_exec ($cmd); if (s Trlen ($mime) > 0) {$mime = explode ("\ n", Trim ($mime)), if (Preg_match ($regexp, $mime [(Count ($mime)-1)], $matches)) {$t His->file_type = $matches [1]; Return }}} if (Function_exists ("Popen")) {$proc = @popen ($cmd, "R"), if (Is_resource ($proc)) {$mime = @fread ($proc); @pclose ($proc); if ($mime!== FALSE) {$mime = explode ("\ n", Trim ($mime)), if (Preg_match ($regexp, $mime [(Count ($mime)-1], $matches)) {$th Is->file_type = $matches [1]; Return }}}}//fall back to the deprecated mime_content_type (), if available (still better than $_files[$field ["type"]) if (fun Ction_exists ("Mime_content_type")) {$this->file_type = @mime_content_type ($tmp _name);//it' s possible that Mime_content_type () returns FALSE or an empty string. if (strlen ($this->file_type) > 0) {return;}} If all else fails, use $_files default MIME type. $this->file_type = $type; }/** * Set multiple Upload Data * * @access protected * @return void */protected function Set_multi_upload_data () {$this ->_multi_upload_data[] = Array ("file_name" + $this->file_name, "File_type" +-$this->file_type, "File_ Path "= $this->upload_path," Full_path "and" Raw_name "-$this->upload_path. Replace ($this->file_ext, "", $this->file_name), "orig_name" = $this->orig_name, "client_name" = $ This->client_name, "file_ext" = $this->file_ext, "file_size" +-$this->file_size, "is_image" = $ This->is_image (), "image_width" = $this->image_width, "image_height" +-$this->image_height, "Image_ Type "= $this->image_type," image_size_str "and" = $this->image_size_str); } /** * Get multiple Upload Data * * @access public * @return Array */Public function Get_multi_upload_data () {return $this _multi_upload_data; }/** * Multile File Upload * * @access public * @param String * @return Mixed */Public Function do_multi_upload ($field) { is $_files[$field] set? If not, no reason to continue. if (!isset ($_files[$field])) {return false;}//is this really a multi upload? if (!is_array ($_files[$field ["name"]) {//fallback to Do_upload method. Return $this->do_upload ($field);}//is the Upload path valid? if (! $this->validate_upload_path ()) {//errors'll already be set by Validate_upload_path () so just return FALSE return FALSE; //every file'll has a separate entry in each of the $_files associative 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 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: $this->set_error ("upload_file_partial"); Break Upload_err_no_file Case 4: $this->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: $this->set_error ("upload_no_file_selected"); Break }//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 be 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 is allowed. 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[$i]); If no extension is provided in the File_name Config item, use the uploaded one. if (Strpos ($this->_multi_file_name_override[$i], ".") = = = FALSE) {$this->file_name. = $this->file_ext;//an Extension was provided, lets has it! } else {$this->file_ext = $this->get_extension ($this->_multi_file_name_override[$i]); } if (! $this->is_allowed_filetype (TRUE)) {$this->set_error ("Upload_invalid_filetype"); return FALSE;}} Convert the file size to kilobytes. if ($this->file_size > 0) {$this->file_size = round ($this->file_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 a 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 = $this->limit_filenam E_length ($this->file_name, $this->max_filename); }//remove white spaces in the name if ($this->remove_spaces = = TRUE) {$this->filE_name = Preg_replace ("/\s+/", "_", $this->file_name); }/* Validate the file name * This function appends a number onto the end of * The file if one with the same name already Exists. * IF It returns false there was a problem. */$this->orig_name = $this->file_name; if ($this->overwrite = = FALSE) {$this->file_name = $this->set_filename ($this->upload_path, $this->file _NAME); if ($this->file_name = = = False) {return false;}} /* Run the file through the XSS hacking filter * 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->do_xss_clean () = = = FALSE) {$this->set_error ("Upload_unable_to_write_ File "); return FALSE; }/*/Move the file to the final destination * to deal with different server configurations * We'll attempt to use copy () First. If that fails * We'll use Move_uploaded_file (). One of the should * reliably work in most enVironments */if (! @copy ($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; }}/* Set The finalized image dimensions * This sets the image width/height (assuming the * file is an image). 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 (); }//return all file upload data. return TRUE; } }
http://www.bkjia.com/PHPjc/733185.html www.bkjia.com true http://www.bkjia.com/PHPjc/733185.html techarticle This article mainly describes the CodeIgniter multi-file Upload use example, the need for friends can refer to the following code:? PHP if (!defined (BasePath)) {exit (No Direct script access allowed);} /...
