Features of PHP download

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upload.php start

<?phpfunction upload_file ($fileInfo, $uploadPath = './uploads ', $imageFlag =true, $allowExt =array (' jpeg ', ' jpg ', ' PNG ', ' gif '), $maxSize =209708) {define (' Upload_errs '), [' upload_max_filesize ' = ' + ' exceeded the PHP config file upload_max_ The value of the FileSize option ', ' form_max_size ' = ' + ' exceeds the value of the form max_file_size option ', ' upload_file_partial ' = ' file part is uploaded ', ' No_upload_file _select ' + ' does not have the option to upload the file ', ' upload_system_error ' = ' system error ', ' no_allow_ext ' = ' illegal file type ', ' exceed_max_size ' = ' + ' exceeded Maximum allowed uploads ', ' not_true_image ' = ' = ' file is not a real image ', ' not_http_post ' + ' file is not uploaded via HTTP post ', ' move_error ' \ = ' File move lost ($fileInfo [' Error ']===upload_err_ok) {//Detect upload file type $ext =strtolower (pathinfo ($fileInfo [' name '],    pathinfo_extension));      if (!in_array ($ext, $allowExt)) {echo upload_errs[' no_allow_ext '];    return false;      }//detects if the upload file size conforms to the specification if ($fileInfo [' Size ']> $maxSize) {echo upload_errs[' exceed_max_size '];    return false; }//Detect if the true picture if ($imageFlag) {if (@!getimagesize ($fileInfo [' Tmp_name ']) {echo upload_errs[' not_true_image '];      return false; }}//detect if the file is uploaded via HTTP post (!is_uploaded_file ($fileInfo [' Tmp_name '])} {return upload_errs[' Not_http_po    St '];    }//detects if the target directory exists, does not exist then creates if (!is_dir ($uploadPath)) {mkdir ($uploadPath, 0777,true); }//Generate unique file names to prevent overwriting of duplicate names $uniName =md5 (Uniqid (Microtime (True), true)).    $ext;    $dest = $uploadPath. Directory_separator. $uniName;      Move the file if (@!move_uploaded_file ($fileInfo [' Tmp_name '], $dest)) {echo upload_errs[' move_error '];    return false;    } echo ' file upload succeeded ';  return $dest;      }else{switch ($fileInfo [' ERROR ']) {Case 1://$mes = ' exceeds the value of the upload_max_filesize option in the PHP configuration file ';      $mes =upload_errs[' upload_max_filesize '];      Break      Case 2: $mes =upload_errs[' form_max_size ');      Break      Case 3: $mes =uplaod_errs[' upload_file_partial ');      Break      Case 4: $mes =upload_errs[' no_upload_file_select ');      Break      Case 6:Case 7:case 8: $mes =uplaod_errs[' Upload_system_error '];    Break    } Echo $mes;  return false; }}?>

Upload.php End

The beginning of HTML <! DOCTYPE html>
The end of the doupload.php