这篇文章主要介绍了codeigniter多文件上传使用示例,需要的朋友可以参考下
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代码如下:
0,
"max_width" => 0,
"max_height" => 0,
"max_filename" => 0,
"allowed_types" => "",
"file_temp" => "",
"file_name" => "",
"orig_name" => "",
"file_type" => "",
"file_size" => "",
"file_ext" => "",
"upload_path" => "",
"overwrite" => FALSE,
"encrypt_name" => FALSE,
"is_image" => FALSE,
"image_width" => "",
"image_height" => "",
"image_type" => "",
"image_size_str" => "",
"error_msg" => array(),
"mimes" => array(),
"remove_spaces" => TRUE,
"xss_clean" => FALSE,
"temp_prefix" => "temp_file_",
"client_name" => ""
);
//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 override.
$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 may be
* passed specifying which array element of the $_FILES[$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 is 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 is an ugly hack, but UNIX-type systems provide a "native" way to detect the file type,
* which is still more secure 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_type() as well, hence the attempts to 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() checks
*/
if(DIRECTORY_SEPARATOR !== "\"){
$cmd = "file --brief --mime ".escapeshellarg($tmp_name)." 2>&1";
if(function_exists("exec")){
/* This might look confusing, as $mime is 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 be set for $mime previously. This effectively makes the second parameter a dummy
* value, which is 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(strlen($mime) > 0){
$mime = explode("
", trim($mime));
if(preg_match($regexp, $mime[(count($mime) - 1)], $matches)){
$this->file_type = $matches[1];
return;
}
}
}
if(function_exists("popen")){
$proc = @popen($cmd, "r");
if(is_resource($proc)){
$mime = @fread($proc, 512);
@pclose($proc);
if($mime !== FALSE){
$mime = explode("
", trim($mime));
if(preg_match($regexp, $mime[(count($mime) - 1)], $matches)){
$this->file_type = $matches[1];
return;
}
}
}
}
//Fall back to the deprecated mime_content_type(), if available (still better than $_FILES[$field]["type"])
if(function_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" => $this->upload_path.$this->file_name,
"raw_name" => str_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" => $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 will already be set by validate_upload_path() so just return FALSE
return FALSE;
}
//Every file will have 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
