Php file Upload class _ PHP Tutorial

The file Upload class used in php. Classupload {*** name attribute of the input field of the html form. the default attribute is file * var $ file_fieldfile; *** $ _ files array * var $ file_array; *** save path, the default path is the current path.

Class upload {
/**
* Name attribute of the input field of an html form. the default value is 'file'
*/
Var $ file_field = 'file ';

/**
* $ _ Files array
*/
Var $ file_array;

/**
* Save path. the default value is the current path.
*/
Var $ save_path = '';

/**
* Custom file name
*/
Var $ define_name;

/**
* Final file name
*/
Var $ name;

/**
* File size, in bytes
*/
Var $ size;

/**
* File extension, excluding "."
*/
Var $ ext;

/**
* The file type that can be uploaded. the default value is unlimited.
*/
Var $ allow_ext = array ();

/**
* The file type that can be uploaded. the default value is unlimited.
*/
Var $ allow_size = false;

/**
* If a file with the same name already exists, whether to overwrite the file. by default, the file is not overwritten.
*/
Var $ overwrite = false;

/**
* Error message
*/
Var $ error_code;

/**
* Constructor
*/
Public function _ construct (){
If (! Is_uploaded_file ($ _ files [$ this-> file_field] ['tmp _ name']) {
Die ("illegal Upload! ");
} Else {
$ This-> file_array = $ _ files [$ this-> file_field];
$ This-> name = $ this-> getpro ('name ');
$ This-> size = $ this-> getpro ('size ');
$ This-> ext = $ this-> getpro ('text ');
}
}


/**
* Upload operation functions
* @ Return true if the abstract object is uploaded successfully. Otherwise, the corresponding error code is returned.
* @ Return string or bool
*/
Public function upload (){
If (is_uploaded_file ($ this-> file_array ['tmp _ name']) {

If (! Empty ($ this-> allow_ext )){
If (! In_array ($ this-> ext, $ this-> allow_ext )){
$ This-> error_code = "this type of file cannot be uploaded! ";
Return false;
}
}

If (! @ File_exists (iconv ('utf-8', 'gbk', $ this-> save_path ))){
$ This-> error_code = "the file upload directory does not exist! ";
Return false;
}

If (! Is_writable (iconv ('utf-8', 'gbk', $ this-> save_path ))){
$ This-> error_code = "the file upload directory cannot be written! ";
Return false;
}

If ($ this-> overwrite = false & @ file_exists (iconv ('utf-8', 'gbk', $ this-> save_path. $ this-> name ))){
$ This-> error_code = "this file already exists! ";
Return false;
}

If ($ this-> allow_size ){
If ($ this-> size> $ this-> allow_size ){
$ This-> error_code = "the file size exceeds the system limit! ";
Return false;
}
}

$ Result = @ move_uploaded_file ($ this-> file_array ['tmp _ name'], iconv ("UTF-8", "gbk", $ this-> save_path. $ this-> getpro ("name ")));
If ($ result ){
Return true;
} Else {
Switch ($ this-> file_array ['error']) {
Case 1:
$ This-> error_code = "the uploaded file exceeds the limit of the upload_max_filesize option! ";
Break;
Case 2:
$ This-> error_code = "the size of the uploaded file exceeds the value specified by the max_file_size option! ";
Break;
Case 3:
$ This-> error_code = "the upload process is interrupted! ";
Break;
Case 4:
$ This-> error_code = "no file is uploaded! ";
Break;
Case 6:
$ This-> error_code = "The temporary folder cannot be found! ";
Break;
Case 7:
$ This-> error_code = "an error occurred while writing the file! ";
Break;
}
Return false;
}
}
}

/**
* Upload operation functions
* @ Abstract get file attributes
* @ Param $ itme: string type. Valid input values include name (file name), ext (file extension), and size (file size)
* @ Return string
*/
Public function getpro ($ item ){
Switch ($ item ){
Case "name ":
$ Filename = $ this-> file_array ['name'];
Return isset ($ this-> define_name )? $ This-> define_name. ".". $ this-> ext: $ filename;
Break;
Case "ext ":
$ Filename = $ this-> file_array ['name'];
$ Filter = explode (".", $ filename );
Return strtolower ($ filter [count ($ filter)-1]);
Break;
Case "size ":
Return $ this-> file_array ['size'];
Break;
Default:
Die ("invalid operation! ");
Break;
}
}
}

Http://www.bkjia.com/PHPjc/631718.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/631718.htmlTechArticleclass upload {/*** name attribute of the html form input field, default: 'file' */var $ file_field = 'file '; /*** $ _ files array */var $ file_array;/*** save path. the default path is the current path...