Community
Learn
Tools Library
AI Tools
Leisure
search
English
Home > Backend Development > PHP Tutorial > URL shortener URL shortener

URL shortener URL shortener

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Release： 2016-07-25 09:07:53
Original
1167 people have browsed it

This is an online code that does not require a database. The URL to be shortened is stored in a txt file in the same directory.
Demonstration: http://www.ucmbaa.org/u/
The first purpose is to shorten the URL, and the second is to prevent search engines from recognizing this address.

  3. /*
  4. location of file to store URLS
  5. */
  6. $file = 'urls.txt';
  8. /*
  9. use mod_rewrite: 0 - no or 1 - yes
  10. */
  11. $use_rewrite = 1;
  13. /*
  14. language/style/output variables
  15. */
  17. $l_url = 'URL';
  18. $l_nourl = 'No URL address entered';
  19. $l_yoururl = 'Your short URL:';
  20. $l_invalidurl = 'Invalid URL.';
  21. $l_createurl = ' Generate short URL';
  23. ////////////////////// NO NEED TO EDIT BELOW /////////////////// //
  25. if(!is_writable($file) || !is_readable($file))
  26. {
  27. die('Cannot write or read from file. Please CHMOD the url file (urls.txt) by default to 777 and make sure it is uploaded.');
  28. }
  30. $action = trim($_GET['id']);
  31. $action = (empty($action) || $action == '') ? 'create' : 'redirect';
  33. $valid = "^(https?|ftp)://([a-z0-9+!*(),;?&=$_.-]+(:[a-z0- 9+!*(),;?&=$_.-]+)?@)?[a-z0-9+$_-]+(.[a-z0-9+$_-]+)* (:[0-9]{2,5})?(/([a-z0-9+$_-].?)+)*/?(?[a-z+&$_.-][ a-z0-9;:@/&%=+$_.-]*)?(#[a-z_.-][a-z0-9+$_.-]*)?$";
  35. $output = '';
  37. if($action == 'create')
  38. {
  39. if(isset($_POST['create']))
  40. {
  41. $url = trim($_POST['url']) ;
  43. if($url == '')
  44. {
  45. $output = $l_nourl;
  46. }
  47. else
  48. {
  49. if(eregi($valid, $url))
  50. {
  51. $fp = fopen($file, 'a');
  52. fwrite($fp, "{$url}rn");
  53. fclose($fp);
  55. $id = count(file($file));
  56. $dir = dirname($_SERVER[ 'PHP_SELF']);
  57. $filename = explode('/', $_SERVER['PHP_SELF']);
  58. $filename = $filename[(count($filename) - 1)];
  60. $shorturl = ($ use_rewrite == 1) ? "http://{$_SERVER['HTTP_HOST']}{$dir}{$id}" : "http://{$_SERVER['HTTP_HOST']}{$dir}{$ filename}?id={$id}";
  62. $output = "{$l_yoururl} {$shorturl}";
  63. }
  64. else
  65. {
  66. $output = $l_invalidurl;
  67. }
  68. }
  69. }
  70. }
  72. if($action == 'redirect')
  73. {
  74. $urls = file($file);
  75. $id = trim ($_GET['id']) - 1;
  76. if(isset($urls[$id]))
  77. {
  78. header("Location: {$urls[$id]}");
  79. exit;
  80. }
  81. else
  82. {
  83. die('Script error');
  84. }
  85. }
  87. ///////////////////// FEEL FREE TO EDIT BELOW /////// /////////////
  88. ?>

  91. The short URL service can help you shorten a long URL, making it easier for you to share the link on social networks and Weibo.

  94. < p class="response">

Previous article：The Fetion interface I wrote myself supports crontab and is shared with everyone for free! Next article：PHP extracts product ID from Taobao URL
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
Team collaboration - What should I do if someone needs the feature I wrote as a dependency in git flow?
From 1970-01-01 08:00:00
0
0
0
Objective-c - Constraints for iOS a warning issue
From 1970-01-01 08:00:00
0
0
0
Confusion about using gitlab's fork&pull request mode within the team
From 1970-01-01 08:00:00
0
0
0
Objective-c - In iOS development, Instagram cannot be authorized after logging in. Instagram does not jump back to the application. How to get the callback address?
From 1970-01-01 08:00:00
0
0
0
Version Control - About the use of SVN and GIT in company projects?
From 1970-01-01 08:00:00
0
0
0
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template

Public welfare online PHP training，Help PHP learners grow quickly！

About us Disclaimer Sitemap

© php.cn All rights reserved