Php multi-file upload methods

& Lt ;? Php introduces three multifile Upload methods. The first two methods are to directly traverse the 3D Ultra-Global Array $ _ FILES. The last one is to define a single file upload function, this function is called repeatedly to complete multifile Upload. 1. when the name attribute of multiple uploaded files in a multifile Upload form is in the & ldquo; pic [] & rdquo; format, that is, the form is in the following format: & lt; formaction & quot; & quot

 0) {switch ($ up_info ['error'] [$ I]) {case 1: $ err_info = "the uploaded file exceeds php. value restricted by the upload_max_filesize option in ini "; break; case 2: $ err_info =" the size of the uploaded file exceeds the value specified by the MAX_FILE_SIZE option in the HTML form "; break; case 3: $ err_info = "only part of the file is uploaded"; break; case 4: $ err_info = "no file is uploaded"; break; case 6: $ err_info = "temporary folder not found"; break; case 7: $ err_info = "file write failed"; break; default: $ err_info = "unknown Upload error "; break;} continue ($ err_info);} // 3. determine whether the file upload type is legal if (! In_array ($ up_info ['type'] [$ I], $ typelist) {continue ('file type error! '. $ Up_info ['type'] [$ I]);} // 4. filter the size of the uploaded file if ($ up_info ['size'] [$ I]> 1000000) {continue ('file size exceeds 1000000 ');} // 5. upload file name processing $ exten_name = pathinfo ($ up_info ['name'] [$ I], PATHINFO_EXTENSION); do {$ main_name = date ('ymhis '. '--'. rand (100,999); $ new_name = $ main_name. '. '. $ exten_name;} while (file_exists ($ to_path. '/'. $ new_name); // 6. determine whether the file is being uploaded and execute the upload if (is_uploaded_file ($ up_info ['tmp _ name'] [$ I]) {if (move_uploaded_file ($ up_info ['TM P_name '] [$ I], $ ob_path.'/'. $ new_name) {echo' file uploaded successfully! ';} Else {echo' an error occurred while moving the uploaded file! ';}} Else {echo' The file is not the uploaded file '; }}// brackets for the for loop 2. when the name attribute of multiple uploaded files in a multifile Upload form is in the format of "pic, text, doc, and pdf", that is, the form is in this form: you can also use foreach to upload multiple files cyclically: // 1. get the information of the file to be uploaded $ up_info =$ _ FILES; $ ob_path = ".. \ system "; $ typelist = array (" image/gif "," image/jpeg "," image/pjpeg "," image/png "); // define the running Upload file type foreach ($ up_info as $ k_name => $ value) {// use foreach to process the upload of multiple files cyclically. // 2. determine whether the file is uploaded incorrectly. if ($ up_info [$ k_name] ['error']> 0) {switch ($ up_info ['error'] [$ I]) {case 1: $ err _ Info = "the uploaded file exceeds php. value restricted by the upload_max_filesize option in ini "; break; case 2: $ err_info =" the size of the uploaded file exceeds the value specified by the MAX_FILE_SIZE option in the HTML form "; break; case 3: $ err_info = "only part of the file is uploaded"; break; case 4: $ err_info = "no file is uploaded"; break; case 6: $ err_info = "temporary folder not found"; break; case 7: $ err_info = "file write failed"; break; default: $ err_info = "unknown Upload error "; break;} continue ($ err_info);} // 3. determine whether the file upload type is legal if (! In_array ($ up_info [$ k_name] ['type'], $ typelist) {continue ('file type error! '. $ Up_info [$ k_name] ['type']);} // 4. filter the size of the uploaded file if ($ up_info [$ k_name] ['size']> 100000) {echo 'the file size exceeds **'; continue;} // 5. upload file name processing $ exten_name = pathinfo ($ up_info [$ k_name] ['name'], PATHINFO_EXTENSION); do {$ main_name = date ('ymhis '. '--'. rand (100,999); $ new_name = $ main_name. '. '. $ exten_name;} while (file_exists ($ to_path. '/'. $ new_name); // 6. determine whether the file is being uploaded and execute the upload if (is_uploaded_file ($ up_info [$ k_name] ['tmp _ name']) {if (move_uploaded _ File ($ up_info [$ k_name] ['tmp _ name'], $ ob_path. '/'. $ new_name) {echo 'file uploaded successfully! ';} Else {echo' an error occurred while moving the uploaded file! ';}} Else {echo' The file is not the uploaded file '; }}// for loop brackets // 3. the above loop is embedded in the file upload code, which may be a bit difficult to understand. Here we provide the third method, // first define the function for uploading a single file, and then call this function again, each time a file is uploaded, // It can also be used to upload multiple files. this method is easier to understand. // The form to be uploaded is the same as that in the second method, that is, // The definition function is as follows: /** single-file upload function * @ param array $ up_info records the ultra-global array of uploaded file information * @ param string $ to_path the destination path of the file to be uploaded * @ param array $ typlist allowed file type * @ param int $ file_size size * @ return string Upload failed, returns the cause of failure. ** if the result is successful, the path including the file name is returned. */Function upload_fun ($ up_info, $ to_path, $ typelist = array (), $ file_size = 2000000) {// 1. determine whether a file is uploaded incorrectly if ($ up_file ['error']> 0) {switch ($ up_info ['error']) {case 1: $ err_info = "the uploaded file exceeds php. value restricted by the upload_max_filesize option in ini "; break; case 2: $ err_info =" the size of the uploaded file exceeds the value specified by the MAX_FILE_SIZE option in the HTML form "; break; case 3: $ err_info = "only part of the file is uploaded"; break; case 4: $ err_info = "no file is uploaded"; break; case 6: $ err_info = "temporary folder not found"; break; case 7: $ err_info = "file Failed to write "; break; default: $ err_info =" unknown Upload error "; break;} return $ err_info; die () ;}// 2. determine whether the uploaded file type is legal if (count ($ typelist)> 0) {if (! In_array ($ up_info ['type'], $ typelist) {$ err_info = 'the file type is invalid! '. $ Up_info ['type']; return $ err_info; die () ;}// 4. determine whether the size of the uploaded file exceeds the allowed value if ($ up_info ['size']> $ file_size) {return $ err_info = 'File size exceeds '. $ file_size; die () ;}// 5. rename the uploaded file $ exten_name = pathinfo ($ up_info ['name'], PATHINFO_EXTENSION); do {$ main_name = date ('ymhis '. '--'. rand (100,999); $ new_name = $ main_name. '. '. $ exten_name;} while (file_exists ($ to_path. '/'. $ new_name); // 6. determine whether the file is uploaded and move the file if (is_uploaded_file ($ up_info ['tmp _ name']) {I F (move_uploaded_file ($ up_info ['tmp _ name'], $ to_path. '/'. $ new_name) {$ err_info = $ to_path. '/'. $ new_name; return $ err_info; die ();} else {return $ err_info = 'an error occurred while moving the uploaded file! '; Die () ;}} else {return $ err_info =' This file is not an uploaded file! '; Die () ;}// the function usage is as follows $ multi_info =$ _ FILES; // receives all the upload information for $ _ FILES $ to_path = 'system '; // the target path of the file to be uploaded: foreach ($ multi_info as $ name => $ up_info) {// foreach traversal $ multi_info $ err_info = upload_fun ($ up_info, $ to_path ); // call the single-file upload function p ($ err_info); // output the returned information;} // this article ends at www.15597.com.?>