PHP File Handling: Examining File Details

Submitted by: 
joken
Language: 
PHP

In this tutorial, I’m going to show how to get information about the file details. To start in this lesson lets create a new PHP file called “file_detail.php”. And add the following code:

  1. <?php
  2.  
  3. $testfile = 'hello.txt';
  4. echo filesize($testfile);// this will echo in byte
  5.  
  6. //this next line are the mdifcation time, and its more than just number
  7. //filemtime: last modified (changed content). and its the file modifiaction time
  8. echo strftime('%m%d%Y %H:%M', filemtime($testfile)).'<br/>';
  9. //filectime: last changed (changed content or metadata)or the last change time of the content of metadata
  10. echo strftime('%m%d%Y %H:%M', filectime($testfile)).'<br/>';
  11. //fileatime: last accessed (any read/change). it keeps track when a file is last accessed
  12. echo strftime('%m%d%Y %H:%M', fileatime($testfile)).'<br/>';
  13. ?>

When executing the code above, it will return the size of a file in bytes and all the modification time are all the same. And it looks like as shown below.

Output:

13
01/09/2014 14:37
01/03/2014 02:53
01/09/2014 14:37

Next, on that we can modify those time is using the touch command, so that we can update those into the current time and we can also pass in some additional arguments. But this were going to set it to the current system time and flip all of these time to the current time. and here’s the following code.

  1. <?php
  2.  
  3. $testfile = 'hello.txt';
  4. echo filesize($testfile).'<br/>';// this will echo in byte
  5.  
  6.  
  7. //this next line are the mdifcation time, and its more than just number
  8. //filemtime: last modified (changed content). and its the file modifiaction time
  9. echo strftime('%m/%d/%Y %H:%M', filemtime($testfile)).'<br/>';
  10. //filectime: last changed (changed content or metadata)or the last change time of the content of metadata
  11. echo strftime('%m/%d/%Y %H:%M', filectime($testfile)).'<br/>';
  12. //fileatime: last accessed (any read/change). it keeps track when a file is last accessed
  13. echo strftime('%m/%d/%Y %H:%M', fileatime($testfile)).'<br/>';
  14.  
  15. touch($testfile);
  16. //this next line are the mdifcation time, and its more than just number
  17. //filemtime: last modified (changed content). and its the file modifiaction time
  18. echo strftime('%m/%d/%Y %H:%M', filemtime($testfile)).'<br/>';
  19. //filectime: last changed (changed content or metadata)or the last change time of the content of metadata
  20. echo strftime('%m/%d/%Y %H:%M', filectime($testfile)).'<br/>';
  21. //fileatime: last accessed (any read/change). it keeps track when a file is last accessed
  22. echo strftime('%m/%d/%Y %H:%M', fileatime($testfile)).'<br/>';
  23.  
  24.  
  25. //in this line of code we're going to get back the file info using pathinfo
  26. $pathinfo = pathinfo(__FILE__);
  27. echo $pathinfo['dirname'].'<br/>';// returns the directory name
  28. echo $pathinfo['basename'].'<br/>';// returns file details
  29. echo $pathinfo['filename'].'<br/>';// returns file_details.php
  30. echo $pathinfo['extension'].'<br/>';// returns php
  31. ?>

Output:

16
01/09/2014 14:37
01/03/2014 02:53
01/09/2014 14:37
01/09/2014 14:37
01/03/2014 02:53
01/09/2014 14:37
C:\xampp\htdocs\file
file_detail.php
file_detail
php
  • 1261 reads
File handling
Examining file
filectime
filemtime
fileatime
pathinfo
joken's picture

Article by joken

joken has submitted 115 source code / articles.

If you like this post, you can follow SourceCodester on Twitter.

Subscribe to SourceCodester feed via RSS or EMAIL to receive instant updates.

Add new comment

More information about text formats

Filtered HTML

  • Web page addresses and e-mail addresses turn into links automatically.
  • You may insert videos with [video:URL]
  • Allowed HTML tags: <a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd> <table> <tr> <td> <th> <img> <h1> <h2> <h3> <iframe> [video]
  • You can enable syntax highlighting of source code with the following tags: <code>, <blockcode>, <asp>, <c>, <cpp>, <csharp>, <css>, <html4strict>, <java>, <javascript>, <mysql>, <php>, <python>, <sql>, <vb>, <vbnet>. The supported tag styles are: <foo>, [foo].
  • Lines and paragraphs break automatically.

Plain text

  • No HTML tags allowed.
  • Lines and paragraphs break automatically.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.