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Two examples of code for traversing directories in php

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2016-07-25 08:53:491122browse
  2. /*
  3. * Traverse the directory
  4. * fopen()
  5. * fread()
  6. * fclose()
  7. * @opendir(target path);E_WARNINE
  8. * readdir(directory reference handle) rewinddir ()
  9. * closedir()
  10. *
  11. * In programming, a handle is a special smart pointer. When an application wants to reference memory blocks or objects managed by other systems (such as databases, operating systems)
  12. *, handles are used. The difference between a handle and an ordinary pointer is that
  13. * The pointer contains the memory address of the referenced object, while the handle is a reference identifier managed by the system.
  14. * This identifier can be relocated to a memory address by the system. This mode of indirect object access enhances the system's control over the referenced object.
  15. * (Script Academy bbs.it-home.org)
  16. */
  17. $dirHandle=@opendir("phpMyAdmin") or die("Unsuccessful in opening the directory");
  18. echo "All the contents in the phpMyAdmin directory are: < br>";
  19. echo readdir($dirHandle)."
    ";
  20. echo readdir($dirHandle)."
    ";
  22. while(($file=readdir($dirHandle))!= =false)
  23. {
  24. $file="phpMyadmin".DIRECTORY_SEPARATOR.$file;
  25. if(is_dir($file))
  26. {
  27. echo "Directory: ".$file."
    ";
  28. }else
  29. {
  30. echo "File: ".$file."File size: ".filesize($file)."KB
    ";
  31. }
  32. }
  33. rewinddir($dirHandle); //Return to the beginning of the handle and traverse it again
  34. while(($file=readdir($dirHandle))!==false)
  35. {
  36. $file="phpMyadmin".DIRECTORY_SEPARATOR.$file;
  37. if($file!="."&&$file!=". .") //Do not read directly
  38. {
  39. if(is_dir($file))
  40. {
  41. echo "Directory: ".$file."
    ";
  42. }else
  43. {
  44. echo "File: ". $file."File size: ".filesize($file)."KB
    ";
  45. }
  46. }
  47. }
  48. closedir($dirHandle);
  49. ?>
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Example 2,

  2. /*
  3. * Traverse directory
  4. *
  5. * class dir{
  6. * string path;
  7. * resource handle;
  8. * string read(void);
  9. * void rewind(void);
  10. * void close(void);
  11. * }
  12. *
  13. * In programming, a handle is a special smart pointer. When an application wants to reference memory blocks or objects managed by other systems (such as databases, operating systems)
  14. *, handles are used. The difference between a handle and an ordinary pointer is that
  15. * The pointer contains the memory address of the referenced object, while the handle is a reference identifier managed by the system.
  16. * This identifier can be relocated to a memory address by the system. This mode of indirect object access enhances the system's control over the referenced object.
  17. *
  18. */
  19. $d = dir("phpMyAdmin");
  20. echo "The path is: ".$d->path."
    ";
  21. echo "The reference handle is: ".$d- >handle."
    ";
  22. // $d->read();
  23. // $d->read();
  24. while(($file=$d->read() )!==false)
  25. {
  26. if($file!="."&&$file!="..")
  27. {
  28. echo $file."
    ";
  29. }
  30. }
  31. $d- >close();
  32. ?>
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