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Examples of php file upload (normal upload and asynchronous upload)

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Release： 2016-07-25 08:56:45
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2，upload_file.php

  2. //php普通文件上传
  3. //by bbs.it-home.org
  4. if ((($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] < 20000)){
  5. if ($_FILES["file"]["error"] > 0) {
  6. echo "Return Code: " . $_FILES["file"]["error"] . "
    ";
  7. }else {
  8. echo "Upload: " . $_FILES["file"]["name"] . "
    ";
  9. echo "Type: " . $_FILES["file"]["type"] . "
    ";
  10. echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb
    ";
  11. echo "Temp file: " . $_FILES["file"]["tmp_name"] . "
    ";
  13. if (file_exists("upload/" . $_FILES["file"]["name"])){
  14. echo $_FILES["file"]["name"] . " already exists. ";
  15. }else{
  16. move_uploaded_file($_FILES["file"]["tmp_name"],
  17. "upload/" . $_FILES["file"]["name"]);
  18. echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
  19. }
  20. }
  22. }else {
  23. echo "Invalid file";
  24. }
  25. ?>
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二、异步文件上传 使用iframe异步上传文件。 1，前端html

  3. 导入文件：
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2，Js代码

  2. function startUpload() {
  3. var spanObj = document.getElementById("info");
  4. spanObj.innerHTML = " 开始上传";
  5. document.getElementById("upForm").sumbit();
  6. }
  7. //回调
  8. function stopUpload(responseText){
  9. var spanObj = document.getElementById("info");
  10. spanObj.innerHTML = "上传成功";
  11. spanObj.innerHTML = responseText;
  12. }
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2), server-side code

  3. $file = $_FILES['myfile'];

  4. $fileName = uploadFile($file);
  5. //$result = readFromFile("../upload /" . $fileName);
  6. echo "";
  8. function uploadFile($ file) {
  9. // Upload path
  10. $destinationPath = "../upload/";
  11. if (!file_exists($destinationPath)){
  12. mkdir($destinationPath , 0777);
  13. }
  14. //Rename
  15. $fileName = date('YmdHis') . '_' . iconv('utf-8' , 'gb2312' , basename($file['name']));
  16. if (move_uploaded_file($file['tmp_name'], $ destinationPath . $fileName)) {
  17. return iconv('gb2312' , 'utf-8' , $fileName);
  18. }
  19. return '';
  20. }

  21. //Code Comments

  22. / *
  23. 1, about the basename method
  24. $path = "/testweb/home.php";
  25. //Display the file name with the file extension
  26. echo basename($path);
  27. //Display without the file extension The file name
  28. echo basename($path,".php");
  30. 2, about iconv
  31. iconv('gb2312', 'utf-8', $fileName);//Convert $fileName from gb2312 to utf- 8 format.
  32. Note: This function needs to open php_iconv.dll in php.ini
  34. 3, about $_FILES['myfile']
  35. $_FILES is equivalent to a two-dimensional array, and $_FILES['myfile'] is equivalent to a one-dimensional array array. So
  36. $f = $_FILES['myfile'];
  37. echo $f['name'];
  39. If you directly access the $_FILES['myfile'], Undefined index: myfile will be reported. At this time add
  40. if(!isset($_FILES['myfile'])){
  41. die('The uploaded file does not exist!');
  42. }
  43. */

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php 文件上传(普通上传与异步上传)的例子
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